ISL21080DIH312Z-TK - RENESAS TECHNOLOGY

FN6934 Rev.7.00 Page 1 of 23

Sep 28, 2018

FN6934

Rev.7.00

Sep 28, 2018

ISL21080

300nA NanoPower Voltage References

DATASHEET

The ISL21080 analog voltage references feature low supply

voltage operation at ultra-low 310nA typical, 1.5µA maximum

operating current. Additionally, the ISL21080 family features

ensured initial accuracy as low as ±0.2% and 50ppm/°C

temperature coefficient.

These references are ideal for general purpose portable

applications to extend battery life at lower cost. The ISL21080

is provided in the industry standard 3 Ld SOT-23 pinout.

The ISL21080 output voltages can be used as precision

voltage sources for voltage monitors, control loops, standby

voltages for low power states for DSP, FPGA, Datapath

Controllers, microcontrollers, and other core voltages: 0.9V,

1.024V, 1.25V, 1.5V, 2.048V, 2.5V, 3.0V, 3.3V, 4.096V, and

5.0V.

Special Note: Post-assembly X-ray inspection may lead to permanent

changes in device output voltage and should be minimized or

avoided. For further information, see “Applications Information” on

page 15 and AN1533, “X-Ray Effects on Intersil FGA References”.

Applications

• Energy harvesting applications

• Wireless sensor network applications

• Low power voltage sources for controllers, FPGA, ASICs, or

logic devices

• Battery management/monitoring

• Low power standby voltages

•Portable Instrumentation

• Consumer/medical electronics

• Wearable electronics

• Lower cost industrial and instrumentation

• Power regulation circuits

• Control loops and compensation networks

• LED/diode supply

Features

• Reference output voltage . . . . . . . . 0.900V, 1.024V, 1.250V,

1.500V, 2.048V, 2.500V, 3.000V, 3.300V, 4.096V, 5.000V

• Initial accuracy:

- ISL21080-09 and -10 . . . . . . . . . . . . . . . . . . . . . . . . . ±0.7%

- ISL21080-12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±0.6%

- ISL21080-15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±0.5%

- ISL21080-20 and -25 . . . . . . . . . . . . . . . . . . . . . . . . . ±0.3%

- ISL21080-30, -33, -41, and -50 . . . . . . . . . . . . . . . . . ±0.2%

• Input voltage range:

- ISL21080-09 . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.0V to 5.5V

- ISL21080-10, -12, -15, -20 and -25. . . . . . . . . 2.7V to 5.5V

- ISL21080-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.2V to 5.5V

- ISL21080-33 . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5V to 5.5V

- ISL21080-41. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5V to 8.0V

- ISL21080-50 . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5V to 8.0V

• Output voltage noise . . . . . . . . . . . . .30µVP-P (0.1Hz to 10Hz)

• Supply current . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5µA (max)

• Tempco . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50ppm/°C

• Output current capability . . . . . . . . . . . . . . . . . . . . . . . . ±7mA

• Operating temperature range. . . . . . . . . . . . . -40°C to +85°C

• Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Ld SOT-23

• Pb-Free (RoHS compliant)

Related Literature

For a full list of related documents, visit our website:

•ISL21080 family product page

FIGURE 1. IIN vs VIN, THREE UNITS

100

200

300

400

500

VIN (V)

IN (nA)

UNIT 1

UNIT 3

2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5

UNIT 2

ISL21080

FN6934 Rev.7.00 Page 2 of 23

Sep 28, 2018

Pin Configuration

3 LD SOT-23

TOP VIEW

VOUT

GND

VIN

Pin Descriptions

PIN NUMBER PIN NAME DESCRIPTION

IN Input Voltage Connection

OUT Voltage Reference Output

3 GND Ground Connection

Ordering Information

PART NUMBER

(Notes 2, 3)

PART

MARKING

(Note 4)

VOUT OPTION

(V)

GRADE

(%)

TEMP. RANGE

(°C)

TAPE AND REEL

(UNITS) (Note 1)

PACKAGE

(RoHS Compliant)

PKG.

DWG. #

ISL21080DIH309Z-TK BCLA 0.9 ±0.7 -40 to +85 1k 3 Ld SOT-23 P3.064A

ISL21080DIH310Z-TK BCMA 1.024 ±0.7 -40 to +85 1k 3 Ld SOT-23 P3.064A

ISL21080DIH312Z-TK BCNA 1.25 ±0.6 -40 to +85 1k 3 Ld SOT-23 P3.064A

ISL21080CIH315Z-TK BCDA 1.5 ±0.5 -40 to +85 1k 3 Ld SOT-23 P3.064A

ISL21080CIH315Z-T7A BCDA 1.5 ±0.5 -40 to +85 250 3 Ld SOT-23 P3.064A

ISL21080CIH320Z-TK BCPA 2.048 ±0.3 -40 to +85 1k 3 Ld SOT-23 P3.064A

ISL21080CIH325Z-TK BCRA 2.5 ±0.3 -40 to +85 1k 3 Ld SOT-23 P3.064A

ISL21080CIH330Z-TK BCSA 3.0 ±0.2 -40 to +85 1k 3 Ld SOT-23 P3.064A

ISL21080CIH333Z-TK BCTA 3.3 ±0.2 -40 to +85 1k 3 Ld SOT-23 P3.064A

ISL21080CIH341Z-TK BCVA 4.096 ±0.2 -40 to +85 1k 3 Ld SOT-23 P3.064A

ISL21080CIH350Z-TK BCWA 5.0 ±0.2 -40 to +85 1k 3 Ld SOT-23 P3.064A

ISL2108009EV1Z ISL21080DIH309Z Evaluation Board

ISL2108010EV1Z ISL21080DIH310Z Evaluation Board

ISL2108012EV1Z ISL21080DIH312Z Evaluation Board

ISL2108015EV1Z ISL21080DIH315Z Evaluation Board

ISL2108020EV1Z ISL21080DIH320Z Evaluation Board

ISL2108025EV1Z ISL21080DIH325Z Evaluation Board

ISL2108030EV1Z ISL21080DIH330Z Evaluation Board

ISL2108033EV1Z ISL21080DIH333Z Evaluation Board

ISL2108040EV1Z ISL21080DIH341Z Evaluation Board

ISL2108050EV1Z ISL21080DIH350Z Evaluation Board

NOTES:

1. Refer to TB347 for details about reel specifications.

2. These Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate

plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Pb-free products are

MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.

3. For Moisture Sensitivity Level (MSL), refer to the ISL21080DIH309, ISL21080DIH310, ISL21080DIH312, ISL21080CIH315, ISL21080CIH320,

ISL21080CIH325, ISL21080CIH330, ISL21080CIH333, ISL21080CIH341, and ISL21080CIH350 product information pages. For more information

about MSL, see TB363.

4. The part marking is located on the bottom of the part.

ISL21080

FN6934 Rev.7.00 Page 3 of 23

Sep 28, 2018

Absolute Maximum Ratings Thermal Information

Max Voltage

VIN to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to +6.5V

IN to GND (ISL21080-41 and 50 only) . . . . . . . . . . . . . . . -0.5V to +10V

OUT to GND (10s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to VOUT +1V

OUT to GND (10s)

ISL21080-41 and 50 only . . . . . . . . . . . . . . . . . . . . . . -0.5V to +5.1V

ESD Ratings

Human Body Model (Tested to JESD22-A114) . . . . . . . . . . . . . . . . . . 5kV

Machine Model (Tested to JESD22-A115). . . . . . . . . . . . . . . . . . . . . 500V

Charged Device Model (Tested to JESD22-C101) . . . . . . . . . . . . . . . . 2kV

Latch-Up (Tested per JESD-78B; Class 2, Level A) . . . . . . . . . . . . . . 100mA

Environmental Operating Conditions

X-Ray Exposure (Note 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10mRem

Thermal Resistance (Typical) JA (°C/W) JC (°C/W)

3 Lead SOT-23 (Notes 6, 7). . . . . . . . . . . . . . 275 110

Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . .+107°C

Continuous Power Dissipation (TA = +85°C) . . . . . . . . . . . . . . . . . . . 99mW

Storage Temperature Range. . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C

Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see TB493

Recommended Operating Conditions

Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C

Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.7V to 5.5V

CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product

reliability and result in failures not covered by warranty.

NOTES:

5. Measured with no filtering, distance of 10” from source, intensity set to 55kV and 70µA current, 30s duration. Other exposure levels should be

analyzed for Output Voltage drift effects. See “Applications Information” on page 15.

6. JA is measured with the component mounted on a high-effective thermal conductivity test board in free air. See TB379 for details.

7. For JC, the “case temp” location is taken at the package top center.

Electrical Specifications (ISL21080-09, VOUT = 0.9V) VIN = 3.0V, TA = -40°C to +85°C, IOUT = 0, unless otherwise

specified. Boldface limits apply over the operating temperature range, -40°C to +85°C.

PARAMETER SYMBOL CONDITIONS

MIN

(Note 13)TYP

MAX

(Note 13)UNIT

Output Voltage VOUT 0.9 V

VOUT Accuracy at TA = +25°C (Notes 8, 9)V

OA -0.7 +0.7 %

Output Voltage Temperature Coefficient

(Note 10)

TC VOUT 50 ppm/°C

Input Voltage Range VIN 2.0 5.5 V

Supply Current IIN 0.35 1.5 µA

Line Regulation VOUT /VIN 2V ≤ VIN ≤ 5.5V 30 350 µV/V

Load Regulation VOUT/IOUT Sourcing: 0mA ≤ IOUT ≤ 10mA 6 100 µV/mA

Sinking: -10mA ≤ IOUT≤ 0mA 23 350 µV/mA

Short-Circuit Current ISC TA = +25°C, VOUT tied to GND 30 mA

Turn-On Settling Time tRVOUT = ±0.1% with no load 1 ms

Ripple Rejection f = 120Hz -40 dB

Output Voltage Noise eN0.1Hz ≤ f ≤10Hz 40 µVP-P

Broadband Voltage Noise VN10Hz ≤ f ≤1kHz 10 µVRMS

Noise Density f = 1kHz 1.1 µV/Hz

Thermal Hysteresis (Note 11)VOUT/TATA = +125°C 100 ppm

Long Term Stability (Note 12)VOUT/tT

A = +25°C 60 ppm

ISL21080

FN6934 Rev.7.00 Page 4 of 23

Sep 28, 2018

Electrical Specifications (ISL21080-10, VOUT = 1.024V) VIN = 3.0V, TA = -40°C to +85°C, IOUT = 0, unless otherwise

specified. Boldface limits apply over the operating temperature range, -40°C to +85°C.

PARAMETER SYMBOL CONDITIONS

MIN

(Note 13)TYP

MAX

(Note 13)UNIT

Output Voltage VOUT 1.024 V

VOUT Accuracy at TA = +25°C (Notes 8, 9)V

OA -0.7 +0.7 %

Output Voltage Temperature Coefficient

(Note 10)

TC VOUT 50 ppm/°C

Input Voltage Range VIN 2.7 5.5 V

Supply Current IIN 0.31 1.5 µA

Line Regulation VOUT /VIN 2.7V ≤ VIN ≤ 5.5V 80 350 µV/V

Load Regulation VOUT/IOUT Sourcing: 0mA ≤ IOUT ≤ 7mA 25 100 µV/mA

Sinking: -7mA ≤ IOUT≤ 0mA 50 350 µV/mA

Short-Circuit Current ISC TA = +25°C, VOUT tied to GND 50 mA

Turn-On Settling Time tRVOUT = ±0.1% with no load 4 ms

Ripple Rejection f = 120Hz -40 dB

Output Voltage Noise eN0.1Hz ≤ f ≤10Hz 30 µVP-P

Broadband Voltage Noise VN10Hz ≤ f ≤1kHz 52 µVRMS

Noise Density f = 1kHz 2.2 µV/Hz

Thermal Hysteresis (Note 11)VOUT/TATA = +165°C 100 ppm

Long Term Stability (Note 12)VOUT/tT

A = +25°C 50 ppm

Electrical Specifications (ISL21080-12, VOUT = 1.25V) VIN = 3.0V, TA = -40°C to +85°C, IOUT = 0, unless otherwise

specified. Boldface limits apply over the operating temperature range, -40°C to +85°C.

PARAMETER SYMBOL CONDITIONS

MIN

(Note 13)TYP

MAX

(Note 13)UNIT

Output Voltage VOUT 1.25 V

VOUT Accuracy at TA = +25°C (Notes 8, 9)V

OA -0.6 +0.6 %

Output Voltage Temperature Coefficient

(Note 10)

TC VOUT 50 ppm/°C

Input Voltage Range VIN 2.7 5.5 V

Supply Current IIN 0.31 1.5 µA

Line Regulation VOUT /VIN 2.7V ≤ VIN ≤ 5.5V 80 350 µV/V

Load Regulation VOUT/IOUT Sourcing: 0mA ≤ IOUT ≤ 7mA 25 100 µV/mA

Sinking: -7mA ≤ IOUT≤ 0mA 50 350 µV/mA

Short-Circuit Current ISC TA = +25°C, VOUT tied to GND 50 mA

Turn-On Settling Time tRVOUT = ±0.1% with no load 4 ms

Ripple Rejection f = 120Hz -40 dB

Output Voltage Noise eN0.1Hz ≤ f ≤10Hz 30 µVP-P

Broadband Voltage Noise VN10Hz ≤ f ≤1kHz 52 µVRMS

Noise Density f = 1kHz 1.1 µV/Hz

Thermal Hysteresis (Note 11)VOUT/TATA = +165°C 100 ppm

Long Term Stability (Note 12)VOUT/tT

A = +25°C 50 ppm

ISL21080

FN6934 Rev.7.00 Page 5 of 23

Sep 28, 2018

Electrical Specifications (ISL21080-15, VOUT = 1.5V) VIN = 3.0V, TA = -40°C to +85°C, IOUT = 0, unless otherwise

specified. Boldface limits apply over the operating temperature range, -40°C to +85°C.

PARAMETER SYMBOL CONDITIONS

MIN

(Note 13)TYP

MAX

(Note 13)UNIT

Output Voltage VOUT 1.5 V

VOUT Accuracy at TA = +25°C (Notes 8, 9)V

OA -0.5 +0.5 %

Output Voltage Temperature Coefficient

(Note 10)

TC VOUT 50 ppm/°C

Input Voltage Range VIN 2.7 5.5 V

Supply Current IIN 0.31 1.5 µA

Line Regulation VOUT /VIN 2.7V ≤ VIN ≤ 5.5V 80 350 µV/V

Load Regulation VOUT/IOUT Sourcing: 0mA ≤ IOUT ≤ 7mA 10 100 µV/mA

Sinking: -7mA ≤ IOUT≤ 0mA 50 350 µV/mA

Short-Circuit Current ISC TA = +25°C, VOUT tied to GND 50 mA

Turn-On Settling Time tRVOUT = ±0.1% with no load 4 ms

Ripple Rejection f = 120Hz -40 dB

Output Voltage Noise eN0.1Hz ≤ f ≤10Hz 30 µVP-P

Broadband Voltage Noise VN10Hz ≤ f ≤1kHz 52 µVRMS

Noise Density f = 1kHz 1.1 µV/Hz

Thermal Hysteresis (Note 11)VOUT/TATA = +165°C 100 ppm

Long Term Stability (Note 12)VOUT/tT

A = +25°C 50 ppm

Electrical Specifications (ISL21080-20, VOUT = 2.048V) VIN = 3.0V, TA = -40°C to +85°C, IOUT = 0, unless otherwise

specified. Boldface limits apply over the operating temperature range, -40°C to +85°C.

PARAMETER SYMBOL CONDITIONS

MIN

(Note 13)TYP

MAX

(Note 13)UNIT

Output Voltage VOUT 2.048 V

VOUT Accuracy at TA = +25°C (Notes 8, 9)V

OA -0.3 +0.3 %

Output Voltage Temperature Coefficient

(Note 10)

TC VOUT 50 ppm/°C

Input Voltage Range VIN 2.7 5.5 V

Supply Current IIN 0.31 1.5 µA

Line Regulation VOUT /VIN 2.7V ≤ VIN ≤ 5.5V 80 350 µV/V

Load Regulation VOUT/IOUT Sourcing: 0mA ≤ IOUT ≤ 7mA 25 100 µV/mA

Sinking: -7mA ≤ IOUT≤ 0mA 50 350 µV/mA

Short-Circuit Current ISC TA = +25°C, VOUT tied to GND 50 mA

Turn-On Settling Time tRVOUT = ±0.1% with no load 4 ms

Ripple Rejection f = 120Hz -40 dB

Output Voltage Noise eN0.1Hz ≤ f ≤10Hz 30 µVP-P

Broadband Voltage Noise VN10Hz ≤ f ≤1kHz 52 µVRMS

Noise Density f = 1kHz 1.1 µV/Hz

Thermal Hysteresis (Note 11)VOUT/TATA = +165°C 100 ppm

Long Term Stability (Note 12)VOUT/tT

A = +25°C 50 ppm

ISL21080

FN6934 Rev.7.00 Page 6 of 23

Sep 28, 2018

Electrical Specifications (ISL21080-25, VOUT = 2.5V) VIN = 3.0V, TA = -40°C to +85°C, IOUT = 0, unless otherwise

specified. Boldface limits apply over the operating temperature range, -40°C to +85°C.

PARAMETER SYMBOL CONDITIONS

MIN

(Note 13)TYP

MAX

(Note 13)UNIT

Output Voltage VOUT 2.5 V

VOUT Accuracy at TA = +25°C (Notes 8, 9)V

OA -0.3 +0.3 %

Output Voltage Temperature Coefficient

(Note 10)

TC VOUT 50 ppm/°C

Input Voltage Range VIN 2.7 5.5 V

Supply Current IIN 0.31 1.5 µA

Line Regulation VOUT /VIN 2.7V ≤ VIN ≤ 5.5V 80 350 µV/V

Load Regulation VOUT/IOUT Sourcing: 0mA ≤ IOUT ≤ 7mA 25 100 µV/mA

Sinking: -7mA ≤ IOUT≤ 0mA 50 350 µV/mA

Short-Circuit Current ISC TA = +25°C, VOUT tied to GND 50 mA

Turn-On Settling Time tRVOUT = ±0.1% with no load 4 ms

Ripple Rejection f = 120Hz -40 dB

Output Voltage Noise eN0.1Hz ≤ f ≤10Hz 30 µVP-P

Broadband Voltage Noise VN10Hz ≤ f ≤1kHz 52 µVRMS

Noise Density f = 1kHz 1.1 µV/Hz

Thermal Hysteresis (Note 11)VOUT/TATA = +165°C 100 ppm

Long Term Stability (Note 12)VOUT/tT

A = +25°C 50 ppm

Electrical Specifications (ISL21080-30, VOUT = 3.0V) VIN = 5.0V, TA = -40°C to +85°C, IOUT = 0, unless otherwise

specified. Boldface limits apply over the operating temperature range, -40°C to +85°C.

PARAMETER SYMBOL CONDITIONS

MIN

(Note 13)TYP

MAX

(Note 13)UNIT

Output Voltage VOUT 3.0 V

VOUT Accuracy at TA = +25°C (Notes 8, 9)V

OA -0.2 +0.2 %

Output Voltage Temperature Coefficient

(Note 10)

TC VOUT 50 ppm/°C

Input Voltage Range VIN 3.2 5.5 V

Supply Current IIN 0.31 1.5 µA

Line Regulation VOUT /VIN 3.2V ≤ VIN ≤ 5.5V 80 350 µV/V

Load Regulation VOUT/IOUT Sourcing: 0mA ≤ IOUT ≤ 7mA 25 100 µV/mA

Sinking: -7mA ≤ IOUT≤ 0mA 50 350 µV/mA

Short-Circuit Current ISC TA = +25°C, VOUT tied to GND 50 mA

Turn-On Settling Time tRVOUT = ±0.1% with no load 4 ms

Ripple Rejection f = 120Hz -40 dB

Output Voltage Noise eN0.1Hz ≤ f ≤10Hz 30 µVP-P

Broadband Voltage Noise VN10Hz ≤ f ≤1kHz 52 µVRMS

Noise Density f = 1kHz 1.1 µV/Hz

Thermal Hysteresis (Note 11)VOUT/TATA = +165°C 100 ppm

Long Term Stability (Note 12)VOUT/tT

A = +25°C 50 ppm

ISL21080

FN6934 Rev.7.00 Page 7 of 23

Sep 28, 2018

Electrical Specifications (ISL21080-33, VOUT = 3.3V) VIN = 5.0V, TA = -40°C to +85°C, IOUT = 0, unless otherwise

specified. Boldface limits apply over the operating temperature range, -40°C to +85°C.

PARAMETER SYMBOL CONDITIONS

MIN

(Note 13)TYP

MAX

(Note 13)UNIT

Output Voltage VOUT 3.3 V

VOUT Accuracy at TA = +25°C (Notes 8, 9)V

OA -0.2 +0.2 %

Output Voltage Temperature Coefficient

(Note 10)

TC VOUT 50 ppm/°C

Input Voltage Range VIN 3.5 5.5 V

Supply Current IIN 0.31 1.5 µA

Line Regulation VOUT /VIN 3.5 V ≤ VIN ≤ 5.5V 80 350 µV/V

Load Regulation VOUT/IOUT Sourcing: 0mA ≤ IOUT ≤ 10mA 25 100 µV/mA

Sinking: -10mA ≤ IOUT≤ 0mA 50 350 µV/mA

Short-Circuit Current ISC TA = +25°C, VOUT tied to GND 50 mA

Turn-On Settling Time tRVOUT = ±0.1% with no load 4 ms

Ripple Rejection f = 120Hz -40 dB

Output Voltage Noise eN0.1Hz ≤ f ≤10Hz 30 µVP-P

Broadband Voltage Noise VN10Hz ≤ f ≤1kHz 52 µVRMS

Noise Density f = 1kHz 1.1 µV/Hz

Thermal Hysteresis (Note 11)VOUT/TATA = +165°C 100 ppm

Long Term Stability (Note 12)VOUT/tT

A = +25°C 50 ppm

Electrical Specifications (ISL21080-41 VOUT = 4.096V) VIN = 5.0V, TA = -40°C to +85°C, IOUT = 0, unless otherwise

specified. Boldface limits apply over the operating temperature range, -40°C to +85°C.

PARAMETER SYMBOL CONDITIONS

MIN

(Note 13)TYP

MAX

(Note 13)UNIT

Output Voltage VOUT 4.096 V

VOUT Accuracy at TA = +25°C (Notes 8, 9)V

OA -0.2 +0.2 %

Output Voltage Temperature Coefficient

(Note 10)

TC VOUT 50 ppm/°C

Input Voltage Range VIN 4.5 8.0 V

Supply Current IIN 0.5 1.5 µA

Line Regulation VOUT /VIN 4.5 V ≤ VIN ≤ 8.0V 80 350 µV/V

Load Regulation VOUT/IOUT Sourcing: 0mA ≤ IOUT ≤ 10mA 10 100 µV/mA

Sinking: -10mA ≤ IOUT≤ 0mA 20 350 µV/mA

Short-Circuit Current ISC TA = +25°C, VOUT tied to GND 80 mA

Turn-On Settling Time tRVOUT = ±0.1% with no load 4 ms

Ripple Rejection f = 120Hz -40 dB

Output Voltage Noise eN0.1Hz ≤ f ≤10Hz 30 µVP-P

Broadband Voltage Noise VN10Hz ≤ f ≤1kHz 52 µVRMS

Noise Density f = 1kHz 1.1 µV/Hz

Thermal Hysteresis (Note 11)VOUT/TATA = +165°C 100 ppm

Long Term Stability (Note 12)VOUT/tT

A = +25°C 50 ppm

ISL21080

FN6934 Rev.7.00 Page 8 of 23

Sep 28, 2018

Electrical Specifications (ISL21080-50 VOUT = 5.0V) VIN = 6.5V, TA = -40°C to +85°C, IOUT = 0, unless otherwise

specified. Boldface limits apply over the operating temperature range, -40°C to +85°C.

PARAMETER SYMBOL CONDITIONS

MIN

(Note 13)TYP

MAX

(Note 13)UNIT

Output Voltage VOUT 5.0 V

VOUT Accuracy at TA = +25°C (Notes 8, 9)V

OA -0.2 +0.2 %

Output Voltage Temperature Coefficient

(Note 10)

TC VOUT 50 ppm/°C

Input Voltage Range VIN 5.5 8.0 V

Supply Current IIN 0.5 1.5 µA

Line Regulation VOUT /VIN 5.5 V ≤ VIN ≤ 8.0V 80 350 µV/V

Load Regulation VOUT/IOUT Sourcing: 0mA ≤ IOUT ≤ 10mA 10 100 µV/mA

Sinking: -10mA ≤ IOUT≤ 0mA 20 350 µV/mA

Short-Circuit Current ISC TA = +25°C, VOUT tied to GND 80 mA

Turn-On Settling Time tRVOUT = ±0.1% with no load 4 ms

Ripple Rejection f = 120Hz -40 dB

Output Voltage Noise eN0.1Hz ≤ f ≤10Hz 30 µVP-P

Broadband Voltage Noise VN10Hz ≤ f ≤1kHz 52 µVRMS

Noise Density f = 1kHz 1.1 µV/Hz

Thermal Hysteresis (Note 11)VOUT/TATA = +165°C 100 ppm

Long Term Stability (Note 12)VOUT/tT

A = +25°C 50 ppm

NOTES:

8. Post-reflow drift for the ISL21080 devices ranges from 100µV to 1.0mV based on experimental results with devices on FR4 double sided boards. The

design engineer must take this into account when considering the reference voltage after assembly.

9. Post-assembly X-ray inspection may also lead to permanent changes in device output voltage and should be minimized or avoided. Initial accuracy

can change 10mV or more under extreme radiation. Most inspection equipment does not affect the FGA reference voltage, but if X-ray inspection is

required, it is advisable to monitor the reference output voltage to verify excessive shift has not occurred.

10. Over the specified temperature range. Temperature coefficient is measured by the box method whereby the change in VOUT is divided by the

temperature range; in this case, -40°C to +85°C = +125°C.

11. Thermal Hysteresis is the change of VOUT measured at TA = +25°C after temperature cycling over a specified range, TA. VOUT is read initially at

TA= +25°C for the device under test. The device is temperature cycled and a second VOUT measurement is taken at +25°C. The difference between

the initial VOUT reading and the second VOUT reading is then expressed in ppm. For  TA = +125°C, the device under test is cycled from +25°C to

+85°C to -40°C to +25°C.

12. Long term drift is logarithmic in nature and diminishes over time. Drift after the first 1000 hours is approximately 10ppm/1khrs.

13. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization

and are not production tested.

ISL21080

FN6934 Rev.7.00 Page 9 of 23

Sep 28, 2018

Typical Performance Characteristics Curves VOUT = 0.9V VIN = 3.0V, IOUT = 0mA,

TA = +25°C unless otherwise specified.

FIGURE 2. IIN vs VIN, THREE UNITS FIGURE 3. IIN vs VIN OVER-TEMPERATURE

FIGURE 4. LINE REGULATION, THREE UNITS FIGURE 5. LINE REGULATION OVER-TEMPERATURE

FIGURE 6. VOUT vs TEMPERATURE NORMALIZED to +25°C FIGURE 7. LINE TRANSIENT RESPONSE, WITH CAPACITIVE LOAD

0.1

0.2

0.3

0.4

0.5

0.6

2.0 2.4 2.8 3.2 3.6 4.0 4.4 4.8 5.2

IIN (µA)

VIN (V)

TYP

LOW

HIGH

VIN (V)

IIN (µA)

0.1

0.2

0.3

0.4

0.5

0.6

2.0 2.4 2.8 3.2 3.6 4.0 4.4 4.8 5.2

+85°C

-40°C +25°C

0.89980

0.89985

0.89990

0.89995

0.90000

0.90005

0.90010

0.90015

0.90020

2.02.42.83.23.64.04.44.85.2

0.9V AT VIN = 3.0V

VIN (V)

TYP

VOUT (V) NORMALIZED TO

HIGH

LOW

VIN (V)

VIN = 3.0V

VOUT (µV) NORMALIZED TO

-150

-100

-50

100

150

200

2.0 2.4 2.8 3.2 3.6 4.0 4.4 4.8 5.2

+25°C

+85°C

-40°C

0.8990

0.8995

0.9000

0.9005

0.9010

-40 -30 -20 -10 0 10 30 40 50 60 70 80

VOUT (V)

NORMALIZED TO +25°C

TEMPERATURE (°C)

TYP

HIGH

LOW

-200

-150

-100

-50

100

150

200

0 0.5 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0

TIME (µs)

VIN = +0.3V

VIN = -0.3V

VOUT (mV)

1.0

ISL21080

FN6934 Rev.7.00 Page 10 of 23

Sep 28, 2018

FIGURE 8. LINE TRANSIENT RESPONSE FIGURE 9. LOAD REGULATION OVER-TEMPERATURE

FIGURE 10. LOAD TRANSIENT RESPONSE FIGURE 11. LOAD TRANSIENT RESPONSE

FIGURE 12. DROPOUT FIGURE 13. TURN-ON TIME

Typical Performance Characteristics Curves VOUT = 0.9V VIN = 3.0V, IOUT = 0mA,

TA = +25°C unless otherwise specified. (Continued)

-200

-150

-100

100

150

200

VIN = +0.3V

VIN = -0.3V

VOUT (mV)

-50

TIME (µs)

0 0.5 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.01.0

-500

500

-10-9-8-7-6-5-4-3-2 -1 1 3 5 7 910

LOAD (mA)

SINKING SOURCING

+25°C

+85°C

-40°C

VOUT (µV)

86420

-1000

-800

-600

-400

-200

200

400

600

800

1000

TIME (ms)

012345678910

VOUT (mV)

ILOAD = +7mA

ILOAD = -7mA

-500

-400

-300

-200

-100

100

200

300

400

500

TIME (ms)

012345678910

VOUT (mV)

ILOAD = +50µA

ILOAD = -50µA

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0

VOUT (V)

VIN (V)

NO LOAD 7mA

0.5

1.0

1.5

2.0

2.5

3.0

3.5

0 0.3 0.6 0.9 1.2 1.5

TIME (ms)

VOUT (V)

TYP HIGH

VDD

LOW

ISL21080

FN6934 Rev.7.00 Page 11 of 23

Sep 28, 2018

Typical Performance Characteristics Curves VOUT = 1.5V VIN = 3.0V, IOUT = 0mA, TA

= +25°C unless otherwise specified.

FIGURE 14. IIN vs VIN, THREE UNITS FIGURE 15. IIN vs VIN OVER-TEMPERATURE

FIGURE 16. LINE REGULATION, THREE UNITS FIGURE 17. LINE REGULATION OVER-TEMPERATURE

FIGURE 18. VOUT vs TEMPERATURE NORMALIZED to +25°C FIGURE 19. LINE TRANSIENT RESPONSE, WITH CAPACITIVE LOAD

100

200

300

400

500

VIN (V)

IN (nA)

UNIT 1

UNIT 3

2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5

UNIT 2

100

200

300

400

500

2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5

-40°C

+85°C

IN (nA)

VIN (V)

+25°C

1.49980

1.49985

1.49990

1.49995

1.50005

1.50010

1.50015

1.50020

(NORMAILIZED TO 1.5V AT VIN = 3V)

1.50000

2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5

VOUT (V)

UNIT 2

UNIT 3

UNIT 1

VIN (V)

-150

-125

-100

-75

-50

-25

100

125

150

2.73.13.53.94.34.75.15.5

(NORMALIZED TO VIN = 3V)

+85°C

+25°C

-40°C

OUT (µV)

VIN (V)

1.4995

1.4996

1.4997

1.4998

1.4999

1.5000

1.5001

1.5002

1.5003

1.5004

1.5005

-40 -30 -20 -10 0 10 20 30 40 50 60 70 80

VIN (V)

OUT (V)

UNIT 1

UNIT 3

UNIT 2

CL= 500pF

VIN = -0.3V

VIN = 0.3V

1ms/DIV

50mV/DIV

ISL21080

FN6934 Rev.7.00 Page 12 of 23

Sep 28, 2018

FIGURE 20. LINE TRANSIENT RESPONSE FIGURE 21. LOAD REGULATION OVER-TEMPERATURE

FIGURE 22. LOAD TRANSIENT RESPONSE FIGURE 23. LOAD TRANSIENT RESPONSE

FIGURE 24. DROPOUT FIGURE 25. TURN-ON TIME

Typical Performance Characteristics Curves VOUT = 1.5V VIN = 3.0V, IOUT = 0mA, TA

= +25°C unless otherwise specified. (Continued)

VIN = 0.3V

VIN = -0.3V

CL= 0pF

1ms/DIV

50mV/DIV

-500

-300

-100

100

300

500

700

900

-7 -6 -5 -4 -3 -2 -1

SINKING OUTPUT CURRENT SOURCING

VOUT (µV)

01234567

+85°C

-40°C

+25°C

IL= 7mA

2ms/DIV

500mV/DIV

IL= -7mA

IL= 50A

IL= -50A

100mV/DIV

1ms/DIV

1.38

1.40

1.42

1.44

1.46

1.48

1.50

1.52

1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5

VIN (V)

VOUT (V)

7mA LOAD

NO LOAD

0.5

1.0

1.5

2.0

2.5

3.0

3.5

0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0

TIME (ms)

VOLTAGE (V)

VIN

UNIT 1

UNIT 3

UNIT 2

ISL21080

FN6934 Rev.7.00 Page 13 of 23

Sep 28, 2018

FIGURE 26. ZOUT vs FREQUENCY, IOUT = 2mA FIGURE 27. PSRR vs FREQUENCY

Typical Performance Characteristics Curves VOUT = 1.5V VIN = 3.0V, IOUT = 0mA, TA

= +25°C unless otherwise specified. (Continued)

100

120

140

160

180

200

10 100 1k 10k 100k

OUT

(Ω)

FREQUENCY (Hz)

100nF

10nF

NO LOAD

1nF

-70

-60

-50

-40

-30

-20

-10

10 100 1k 10k 100k

PSRR (dB)

FREQUENCY (Hz)

10nF

100nF

NO LOAD

1nF

Typical Performance Characteristics Curves TA = +25°C unless otherwise specified.

FIGURE 28. DROPOUT, ISL21080-10 FIGURE 29. DROPOUT, ISL21080-12

FIGURE 30. DROPOUT, ISL21080-25 FIGURE 31. DROPOUT, ISL21080-30

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0

VOUT (V)

VIN (V)

NO LOAD 7mA

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.3 1.5 1.7 1.9 2.1 2.3 2.5 2.7 2.9

VOUT (V)

VIN (V)

NO LOAD 7mA

2.0

2.1

2.2

2.3

2.4

2.5

2.6

2.7

2.8

2.9

3.0

2.5 2.7 2.9 3.1 3.3 3.5

VOUT (V)

VIN (V)

NO LOAD 7mA

2.7

2.8

2.9

3.0

3.1

3.2

3.3

3.0 3.2 3.4 3.6 3.8 4.0

VOUT (V)

VIN (V)

NO LOAD 7mA

ISL21080

FN6934 Rev.7.00 Page 14 of 23

Sep 28, 2018

FIGURE 32. DROPOUT, ISL21080-33 FIGURE 33. DROPOUT, ISL21080-41

FIGURE 34. DROPOUT, ISL21080-50

High Current Application

FIGURE 35. DIFFERENT VIN AT ROOM TEMPERATURE FIGURE 36. DIFFERENT VIN AT HIGH TEMPERATURE (+85°C)

Typical Performance Characteristics Curves TA = +25°C unless otherwise specified. (Continued)

3.0

3.1

3.2

3.3

3.4

3.5

3.6

3.3 3.5 3.7 3.9 4.1 4.3 4.5

VOUT (V)

VIN (V)

NO LOAD 7mA

3.7

3.8

3.9

4.0

4.1

4.2

4.3

4.1 4.3 4.5 4.7 4.9 5.1

VOUT (V)

VIN (V)

NO LOAD 7mA

4.7

4.8

4.9

5.0

5.1

5.2

5.3

5.0 5.2 5.4 5.6 5.8 6.0

VOUT (V)

VIN (V)

NO LOAD 7mA

1.492

1.494

1.496

1.498

1.500

1.502

0 5 10 15 20 25 30

ILOAD (mA)

VREF (V)

VIN = 5V

VIN = 3.3V

VIN = 3.5V

1.492

1.494

1.496

1.498

1.500

1.502

0 5 10 15 20 25 30

ILOAD (mA)

VREF (V)

VIN = 5V

VIN = 3.5V

VIN = 3.3V

ISL21080

FN6934 Rev.7.00 Page 15 of 23

Sep 28, 2018

Applications Information

FGA Technology

The ISL21080 series of voltage references use floating gate

technology to create references with very low drift and supply

current. Essentially, the charge stored on a floating gate cell is

set precisely in manufacturing. The reference voltage output

itself is a buffered version of the floating gate voltage. The

resulting reference device has excellent characteristics which are

unique in the industry: very low temperature drift, high initial

accuracy, and almost zero supply current. The reference voltage

itself is not limited by voltage bandgaps or Zener settings, so a

wide range of reference voltages can be programmed (standard

voltage settings are provided, but customer-specific voltages are

available).

The process used for these reference devices is a floating gate

CMOS process, and the amplifier circuitry uses CMOS transistors

for amplifier and output transistor circuitry. While providing

excellent accuracy, there are limitations in output noise level and

load regulation due to the MOS device characteristics. These

limitations are addressed with circuit techniques discussed in

other sections.

Board Assembly Considerations

FGA references provide high accuracy and low temperature drift

but some PCB assembly precautions are necessary. Normal

Output voltage shifts of 100µV to 1mV can be expected with

Pb-free reflow profiles or wave solder on multi-layer FR4 PC

boards. Avoid excessive heat or extended exposure to high reflow

or wave solder temperatures. This may reduce device initial

accuracy.

Post-assembly X-ray inspection may also lead to permanent

changes in device output voltage and should be minimized or

avoided. If X-ray inspection is required, it is advisable to monitor

the reference output voltage to verify excessive shift has not

occurred. If large amounts of shift are observed, it is best to add an

X-ray shield consisting of thin zinc (300µm) sheeting to allow clear

imaging, yet block X-ray energy that affects the FGA reference.

Special Applications Considerations

In addition to post-assembly examination, other X-ray sources

may affect the FGA reference long term accuracy. Airport

screening machines contain X-rays and has a cumulative effect

on the voltage reference output accuracy. Carry-on luggage

screening uses low level X-rays and is not a major source of

output voltage shift; however, if a product is expected to pass

through that type of screening over 100 times, it may need to

consider shielding with copper or aluminum. Checked luggage

X-rays are higher intensity and can cause output voltage shift in

much fewer passes, thus devices expected to go through those

machines should definitely consider shielding. Note that just two

layers of 1/2 ounce copper planes reduce the received dose by

over 90%. The leadframe for the device which is on the bottom

also provides similar shielding.

If a device is expected to pass through luggage X-ray machines

numerous times, it is advised to mount a 2-layer (minimum) PCB

on the top, and along with a ground plane underneath will

effectively shield it from 50 to 100 passes through the machine.

Because these machines vary in X-ray dose delivered, it is

difficult to produce an accurate maximum pass

recommendation.

Nanopower Operation

Reference devices achieve their highest accuracy when powered

up continuously, and after initial stabilization has taken place.

This drift can be eliminated by leaving the power on continuously.

The ISL21080 is the first high precision voltage reference with

ultra low power consumption that makes it possible to leave

power on continuously in battery operated circuits. The ISL21080

consumes extremely low supply current due to the proprietary

FGA technology. Supply current at room temperature is typically

350nA, which is 1 to 2 orders of magnitude lower than

competitive devices. Application circuits using battery power

benefit greatly from having an accurate, stable reference, which

essentially presents no load to the battery.

In particular, battery powered data converter circuits that would

normally require the entire circuit to be disabled when not in use

can remain powered up between conversions as shown in

Figure 37. Data acquisition circuits providing 12 bits to 24 bits of

accuracy can operate with the reference device continuously

biased with no power penalty, providing the highest accuracy and

lowest possible long term drift.

Other reference devices consuming higher supply currents need

to be disabled in between conversions to conserve battery

capacity. Absolute accuracy suffers as the device is biased and

requires time to settle to its final value, or, may not actually settle

to a final value as power on time may be short. Table 1 shows an

example of battery life in years for ISL21080 in various power on

conditions with 1.5µA maximum current consumption.

TABLE 1. EXAMPLE OF BATTERY LIFE IN YEARS FOR ISL21080 IN

VARIOUS POWER ON CONDITIONS WITH 1.5µA MAX

CURRENT

BATTERY RATING

(mAH) CONTINUOUS

50% DUTY

CYCLE

10% DUTY

CYCLE

40 3 6 30*

225 16.3* 32.6* 163*

NOTE: *Typical Li-ion battery has a shelf life of up to 10 years.

VIN = +3.0V

0.001µF TO 0.01µF

SERIAL

BUS

VIN VOUT

GND

ISL21080

REF IN

ENABLE

SCK

SDAT

A/D CONVERTER

12 TO 24-BIT

0.01µF

10µF

FIGURE 37. REFERENCE INPUT FOR ADC CONVERTER

ISL21080

FN6934 Rev.7.00 Page 16 of 23

Sep 28, 2018

ISL21080 Used as a Low Cost Precision

Current Source

Using an N-JET and an ISL21080 Nanopower voltage reference, a

precision, low cost, high impedance current source can be

created. The precision of the current source is largely dependent

on the tempco and accuracy of the reference. The current setting

resistor contributes less than 20% of the error.

Output Impedance vs Load Current

The normal operation of the ISL21080 is to “source current” at a

specific reference voltage. This part is not suitable for

applications resulting in the output having to simultaneously

source and sink load currents, as it is a nano-powered part. This

can occur if the voltage reference is used in a bi-directional filter

resulting in output currents having to both source and sink. In an

event where such currents are applied, at every zero crossing, the

part becomes unstable and generates voltage spikes as shown in

Figure 39 (blue trace). The output impedance due to these

voltage spikes is much larger (Figure 40) than if the voltage

reference is only sourcing (Figure 41) or only sinking (Figure 42).

Notice in Figure 41 and Figure 42, there is a direct correlation

between the output impedance vs load current.

FIGURE 39. OUTPUT VOLTAGE SPIKES CAUSED BY SOURCING AND

SINKING OUTPUT LOAD CURRENTS AT ZERO CROSSING

FIGURE 38. ISL21080 USED AS A LOW COST PRECISION CURRENT

SOURCE

+8V TO 28V

0.01µF

VIN VOUT

10kΩ

RSET

0.1%

10ppm/°C

ISY ~ 0.31µA

IL AT 0.1% ACCURACY

~150.3µA

ISL21080-1.5 ZOUT > 100MΩ

ISET

VOUT

ISET = RSET

IL = ISET + IRSET

VOUT = 1.5V

GND

ISL21080 1.5V

VIN = 3.3V

VOUT 20mV/DIV

500mV/DIV

RS = 50k

40ms/DIV

FIGURE 40. ZOUT VS LOAD (SOURCING AND SINKING) CURRENT, NO

LOAD CAPACITANCE

FIGURE 41. ZOUT VS LOAD (SOURCING) CURRENT, NO LOAD

CAPACITANCE

FIGURE 42. ZOUT VS LOAD (SINKING) CURRENT, NO LOAD

CAPACITANCE

100

1000

10000

100000

10 100 1000 10000

OUT

(Ω)

LOAD

(μA)

F = 10Hz

F = 60Hz

F = 100Hz

F = 1000Hz

0.1

100

1000

10 100 1000

10000

OUT

(Ω)

LOAD

(μA)

F = 10Hz

F = 60Hz

F = 100Hz

F = 1000Hz

0.1

100

1000

10000

10 100 1000

10000

ZOUT (Ω)

ILOAD (μA)

F = 10Hz

F = 60Hz

F = 100Hz

F = 1000Hz

ISL21080

FN6934 Rev.7.00 Page 17 of 23

Sep 28, 2018

Board Mounting Considerations

For applications requiring the highest accuracy, board mounting

location should be reviewed. Placing the device in areas subject to

slight twisting can reduce the accuracy of the reference voltage due

to die stresses. It is normally best to place the device near the edge

of a board, or the shortest side, as the axis of bending is most

limited at that location. Obviously, mounting the device on flexprint

or extremely thin PC material will likewise cause loss of reference

accuracy.

Noise Performance and Reduction

The output noise voltage in a 0.1Hz to 10Hz bandwidth is

typically 30µVP-P. Noise in the 10kHz to 1MHz bandwidth is

approximately 400µVP-P with no capacitance on the output, as

shown in Figure 43. These noise measurements are made with a

2 decade bandpass filter made of a 1-pole high-pass filter with a

corner frequency at 1/10 of the center frequency and 1-pole

low-pass filter with a corner frequency at 10 times the center

frequency. Figure 43 also shows the noise in the 10kHz to 1MHz

band can be reduced to about 50µVP-P using a 0.001µF

capacitor on the output. Noise in the 1kHz to 100kHz band can

be further reduced using a 0.1µF capacitor on the output, but

noise in the 1Hz to 100Hz band increases due to instability of the

very low power amplifier with a 0.1µF capacitance load. For load

capacitances above 0.001µF, the noise reduction network shown

in Figure 44 is recommended. This network reduces noise

significantly over the full bandwidth. As shown in Figure 43, noise

is reduced to less than 40µVP-P from 1Hz to 1MHz using this

network with a 0.01µF capacitor and a 2kΩ resistor in series with

a 10µF capacitor.

Turn-On Time

The ISL21080 devices have ultra-low supply current and thus, the

time to bias-up internal circuitry to final values is longer than with

higher power references. Normal turn-on time is typically 4ms.

Because devices can vary in supply current down to >300nA,

turn-on time can last up to about 12ms. Care should be taken in

system design to include this delay before measurements or

conversions are started.

Temperature Coefficient

The limits stated for temperature coefficient (tempco) are governed

by the method of measurement. The overwhelming standard for

specifying the temperature drift of a reference is to measure the

reference voltage at two temperatures, take the total variation,

(VHIGH - VLOW), and divide by the temperature extremes of

measurement (THIGH –T

LOW). The result is divided by the nominal

reference voltage (at T = +25°C) and multiplied by 106 to yield

ppm/°C. This is the “Box” method for specifying temperature

coefficient.

CL = 0

CL = 0.001µF

CL = 0.1µF

CL = 0.01µF AND 10µF + 2kΩ

400

350

300

250

200

150

100

1 10 100 1k 10k 100k

NOISE VOLTAGE (µVP-P)

FIGURE 43. NOISE REDUCTION

VIN = 3.0V

VIN

GND

ISL21080

0.01µF

10µF

2kΩ

0.1µF

10µF

FIGURE 44. NOISE REDUCTION NETWORK

ISL21080

FN6934 Rev.7.00 Page 18 of 23

Sep 28, 2018

Typical Application Circuits

FIGURE 45. PRECISION 2.5V 50mA REFERENCE

FIGURE 46. 2.5V FULL SCALE LOW-DRIFT 10-BIT ADJUSTABLE VOLTAGE SOURCE

FIGURE 47. KELVIN SENSED LOAD

VIN = 3.0V

2N2905

2.5V/50mA

0.001µF

VIN

VOUT

GND

ISL21080

R = 200Ω

VIN

VOUT

GND

2.7V TO 5.5V

0.1µF

0.001µF

VOUT

–

VCC RH

X9119

VSS

SDA

SCL

2-WIRE BUS VOUT

(BUFFERED)

10µF

ISL21080

0.1µF

VIN

VOUT

GND

ISL21080

VOUT SENSE

LOAD

–

10µF

2.7V TO 5.5V

ISL21080

FN6934 Rev.7.00 Page 19 of 23

Sep 28, 2018

Revision History The revision history provided is for informational purposes only and is believed to be accurate, but not warranted.

Please visit our website to make sure you have the latest revision.

DATE REVISION CHANGE

Sep 28, 2018 FN6934.7 Added evaluation board part numbers to Ordering Information table.

Updated Figure 26, “ZOUT vs FREQUENCY, IOUT = 2mA,” on page 13 (the lower frequency responses were

changed for Output impedance with Iout = 2mA).

Updated Figure 27 (minor grid lines were added).

Added “Output Impedance vs Load Current” on page 16.

Mar 26, 2018 FN6934.6 Updated Related Literature section.

Updated Ordering Information table by adding -T7A part, tape and reel quantity column, and updating package

drawing number.

Updated Note 5 by fixing the induced error caused from importing new formatting. Changed 70mA to 70µA.

Removed About Intersil section.

Replaced POD P3.064 with POD P3.064A.

Jun 23, 2014 FN6934.5 Converted to New Template

Updated POD with following changes:

In Detail A, changed lead width dimension from 0.13+/-0.05 to 0.085-0.19

Changed dimension of foot of lead from 0.31+/-0.10 to 0.38+/-0.10

In Land Pattern, added 0.4 Rad Typ dimension

In Side View, changed height of package from 0.91+/-0.03 to 0.95+/-0.07

May, 12, 2010 FN6934.4 Changed Theta JA in the “Thermal Information” on page 3 from 170 to 275. Added Theta JC and applicable note.

ISL21080

FN6934 Rev.7.00 Page 20 of 23

Sep 28, 2018

Apr 29, 2010 FN6934.3 Incorrect Thermal information, needs to be re-evaluated and added at a later date when the final data is

available. Removed Theta JC and applicable note from “Thermal Information” on page 3.

Apr 14, 2010 Corrected y axis label on Figure 9 from “VOUT (V)” to “VOUT (µV)”

Apr 6, 2010 Source/sink for 0.9V option changed from 7mA to 10mA

Line regulation condition for 0.9V changed from 2.7V to 2V

Line regulation typical for 0.9V option changed from 10 to 30µV/V

TA in Thermal Hysterisis conditions of 0.9V option changed from 165°C to 125°C

Moved “Board Assembly Considerations” and “Special Applications Considerations” to page 15. Deleted

“Handling and Board Mounting” section since “Board Assembly Considerations” on page 15 contains same

discussion.

Added “Special Note: Post-assembly X-ray inspection may lead to permanent changes in device output voltage

and should be minimized or avoided.” to “ISL21080” on page 1

Figures 2 and 3 revised to show line regulation and Iin down to 2V.

Figures 4 and 5 revised to show Vin down to 2V.

Added “Initial accuracy can change 10mV or more under extreme radiation.” to Note 9 on page 8.

Apr 1, 2010 1. page 3: Change Vin Min from 2.7 to 2.0

2. page 3: Change Iin Typ from 0.31 to 0.35

3. page 3: Change Line Reg Typ from 80 to 10

4. page 3: Change Load Reg Condition from 7mA to 10mA and -7mA to -10mA

5. page 3: Change Load Reg Typ for Source from 25 to 6 and Sink from 50 to 23.

6. page 3: Change Isc Typ from 50 to 30

7. page 3: Change tR from 4 to 1

8. Change Ripple Rejection typ for all options from -30 to -40

9. page 3: Change eN typ from 30 to 40V

10. page 3: Change VN typ from 50 to 10V

11. page 3: Change Noise Density typ from 1.1 to 2.2

12. page 3: Change Long Term Stability from 50 to 60

13. Added Figure 2 to 13 on page 9 to page 10 for 0.9V curves.

14. Added Figure 28 to 34 on page 13 to page 14 for other options Dropout curve.

15. page 1: Change Input Voltage Range for 0.9V option from TBD to 2V to 5.5V

16. Added latch up to “Absolute Maximum Ratings” on page 3

17. Added Junction Temperature to “Thermal Information” on page 3

18. Added JEDEC standards used at the time of testing for “ESD Ratings” on page 3

19. HBM in “Absolute Maximum Ratings” on page 3 changed from 5.5kV to 5kV

20. Added Theta JC and applicable note.

Mar 25, 2010 Throughout- Converted to new format. Changes made as follows:

Moved “Pin Configuration” and “Pin Descriptions” to page 2

Added “Related Literature” to page 1

Added key selling feature graphic Figure 1 to page 1

Added "Boldface limits apply..." note to common conditions of Electrical Specifications tables on page 3 through

page 8. Bolded applicable specs. Added Note 13 to MIN MAX columns of all Electrical Specifications tables.

Added ““Environmental Operating Conditions” to page 3 and added Note 5

Added “The process used for these reference devices is a floating gate CMOS process, and the amplifier circuitry

uses CMOS transistors for amplifier and output transistor circuitry. While providing excellent accuracy, there are

limitations in output noise level and load regulation due to the MOS device characteristics. These limitations are

addressed with circuit techniques discussed in other sections.” on page 15

Revision History The revision history provided is for informational purposes only and is believed to be accurate, but not warranted.

Please visit our website to make sure you have the latest revision. (Continued)

DATE REVISION CHANGE

ISL21080

FN6934 Rev.7.00 Page 21 of 23

Sep 28, 2018

Oct 14, 2009 FN6934.2 1. Removed “Coming Soon” on page 1 and 2 for -10, -20, -41, and -50 options.

2. Page 1. Moved “ISL21080-505.5V to 8.0V" from bullet to sub-bullet.

3. Update package outline drawing P3.064 to most recent revision. Updates to package were to add land

pattern and move dimensions from table onto drawing (no change to package dimensions)

Sep 04, 2009 FN6934.1 Converted to new Intersil template. Added Revision History and Products Information. Updated Ordering

Information to match Intrepid, numbered all notes and added Moisture

Sensitivity Note with links. Moved Pin Descriptions to page 1 to follow pinout

Changed in Features Section

From: Reference Output Voltage1.25V, 1.5V, 2.500V, 3.300V

To: Reference Output Voltage 0.900V, 1.024V, 1.250V, 1.500V, 2.048V, 2.500V, 3.000V,

3.300V, 4.096V, 5.000V

From: Initial Accuracy: 1.5V±0.5%

To: Initial Accuracy:

ISL21080-09 and -10±0.7%

ISL21080-12 ±0.6%

ISL21080-15±0.5%

ISL21080-20 and -25±0.3%

ISL21080-30, -33, -41, and -50±0.2%

FROM: Input Voltage Range

ISL21080-12 (Coming Soon)2.7V to 5.5V

ISL21080-152.7V to 5.5V

ISL21080-25 (Coming Soon)2.7V to 5.5V

ISL21080-33 (Coming Soon)3.5V to 5.5V

TO: Input Voltage Range:

ISL21080-09, -10, -12, -15, -20, and -252.7V to 5.5V

ISL21080-09, -10, and 20 (Coming Soon)

ISL21080-303.2V to 5.5V

ISL21080-333.5V to 5.5V

ISL21080-41 (Coming Soon)4.5V to 8.0V

Added: ISL21080-50 (Coming Soon)5.5V to 8.0V Output Voltage Noise

30µVP-P (0.1Hz to 10Hz)

Updated Electrical Spec Tables by Tables with Voltage References 9, 10, 12, 20, 25, 30, 33

and 41.

Added to Abs Max Ratings:

VIN to GND (ISL21080-41 and 50 only-0.5V to +10V

VOUT to GND (10s)

(ISL21080-41 and 50 only-0.5V to +5.1V

Changed Tja in Thermal information from “202.70” to “170” to match ASYD in Intrepid

Added Note:

Post-assembly X-ray inspection may also lead to permanent changes in device output voltage and should be

minimized or avoided. Most inspection equipment will not affect the FGA reference voltage, but if X-ray

inspection is required, it is advisable to monitor the reference output voltage to verify excessive shift has not

occurred.

Added Special Applications Considerations Section on page 12.

Jul 28, 2009 FN6934.0 Initial Release.

Revision History The revision history provided is for informational purposes only and is believed to be accurate, but not warranted.

Please visit our website to make sure you have the latest revision. (Continued)

DATE REVISION CHANGE

ISL21080

FN6934 Rev.7.00 Page 22 of 23

Sep 28, 2018

Package Outline Drawing

P3.064A

3 LEAD SMALL OUTLINE TRANSISTOR PLASTIC PACKAGE (SOT23-3)

Rev 0, 7/14

Reference JEDEC TO-236.

Footlength is measured at reference to gauge plane.

Dimension does not include interlead flash or protrusions.

Dimensioning and tolerancing conform to ASME Y14.5M-1994.

Dimensions are in millimeters.1.

NOTES:

DETAIL "A"

SIDE VIEW

TYPICAL RECOMMENDED LAND PATTERN

TOP VIEW

0.20 M C

1.30 ±0.10

2.37 ±0.27

2.92 ±0.12

10° TYP

(2 plcs)

0.013(MIN)

0.100(MAX)

SEATING PLANE

1.00 ±0.12

0.91 ±0.03

SEATING PLANE

GAUGE PLANE

0.31 ±0.10

DETAIL "A"

0.435 ±0.065

0 to 8°

(2.15)

(1.25)

(0.60)

(0.95 typ.)

0.13 ±0.05

Dimensions in ( ) for Reference Only.

Interlead flash or protrusions shall not exceed 0.25mm per side.

0.950

0.10 C5

(0.4 RAD typ)

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