ISL29102IROZ-T7A - Intersil - Datasheet.Directory

FN6483.1

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ISL29102

Low Power Ambient Light-to-Voltage

Non-Linear Converter

The ISL29102 is a low cost light-to-voltage silicon optical

sensor combining a photodiode array, a non-linear current

amplifier and a micro-power op amp on a single monolithic

IC. Similar to human eyes, the photodiode array has peak

sensitivity at 550nm and spans from 400nm to 600nm,

rejecting UV light and IR light. The input luminance range is

from 0.3 lux to 10,000 lux.

The integrated non-linear current amplifier boosts and

converts the photodiode signal in a square root fashion,

extending the light input dynamic range while maintaining

excellent sensitivity at dim conditions with low lux levels. The

device consumes minimal power over a wide range of

ambient lux levels because the current consumption ramps

at a square root fashion. A dark current compensation circuit

minimizes the effect of temperature dependent leakage

currents in the absence of light, improving the light sensitivity

at low lux levels while maintaining excellent sensitivity at low

lux levels. The built-in 1µA op amp gives the ISL29102 an

output voltage driving advantage for heavier loads.

The ISL29102 is housed in an ultra compact 2mmx2.1mm

ODFN plastic case surface mount package. Operation is

rated from -40°C to +85°C.

Features

• Square Root Voltage Output

• 0.3 lux to 10,000 lux Range

• 1.8V to 3.3V Supply Range

• Close to Human Eye Spectral Response

• Fast Response Time

• Internal Temperature Compensation

• Good IR Rejection

• Low Supply Current

• Operating Temperature Range -40°C to +85°C

• 6 Ld ODFN: 2mmx2.1mmx0.7mm

• Pb-Free (RoHS Compliant)

Applications

• Display and keypad dimming for:

- Mobile devices: smart phone, PDA, GPS

- Computing devices: notebook PC, webpod

- Consumer devices: LCD-TV, digital picture frame, digital

camera

• Industrial and medical light sensing

Related Literature

• See AN1422, “Light Sensor Applications”

Simplified Block Diagram

Ordering Information

PART NUMBER

(Notes 2, 3)

PACKAGE

(Pb-Free)

PKG.

DWG. #

ISL29102IROZ-T7 (Note 1) 6 Ld ODFN

(Tape and Reel)

L6.2x2.1

ISL29102IROZ-EVALZ Evaluation Board

NOTES:

1. Please refer to TB347 for details on reel specifications.

2. These Intersil Pb-free plastic packaged products employ special

Pb-free material sets; molding compounds/die attach materials

and NiPdAu plate - e4 termination finish, which is RoHS

compliant and compatible with both SnPb and Pb-free soldering

operations. Intersil 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), please see device

information page for ISL29102. For more information on MSL

please see techbrief TB363.

VDD

GND

REXT

VOUT

LIGHT DATA

PROCESS

CURRENT

AMPLIFIER

OUTPUT CURRENT α √LIGHT INTENSITY

PHOTODIODE

ARRAY

Data Sheet July 15, 2010

2FN6483.1

July 15, 2010

Pinout

ISL29102

(6 LD ODFN)

TOP VIEW

VDD

GND

VOUT

REXT

Pin Descriptions

PIN NUMBER PIN NAME PIN DESCRIPTION

1 VDD Supply (1.8V to 3.3V).

2 GND Ground

3 NC No connect

4 REXT Connected to an external resistor to GND setting the light-to-voltage scaling constant.

5 NC No connect

6 VOUT Voltage Output.

- PD Thermal Pad. Thermal pad can be connected to GND or electrically isolated.

ISL29102

3FN6483.1

July 15, 2010

Absolute Maximum Ratings (TA = +25°C) Thermal Information

Supply Voltage Between VDD and GND . . . . . . . . . . . . . . . . . . 3.6V

REXT . . . . . . . . . . . . . . . . . . . . . . . . (-0.5V + GND) to (0.5V + VDD)

VOUT . . . . . . . . . . . . . . . . . . . . . . . . (-0.5V + GND) to (0.5V + VDD)

VOUT Short Circuit Current . . . . . . . . . . . . . . . . . . . . . . . . . . <10mA

ESD Rating

Human Body Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3kV

Machine Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .300V

Thermal Resistance (Typical) θJA (°C/W)

6 Lead ODFN (Note 4) . . . . . . . . . . . . . . . . . . . . . . . 88

Maximum Die Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . +90°C

Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +100°C

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

Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below

http://www.intersil.com/data/tb/TB477.pdf

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.

NOTE:

4. θJA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See

Tech Brief TB379.

IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typical values are for information purposes only. Unless otherwise noted, all tests

are at the specified temperature and are pulsed tests, therefore: TJ = TC = TA

Electrical Specifications VDD = 3V, TA = +25°C, REXT = 100kΩ, no load at VOUT, green LED light, unless otherwise specified.

PARAMETER DESCRIPTION CONDITION MIN TYP MAX UNIT

E Range of Input Light Intensity for Square Root

Relationship to be Held

0.3 - 10k Lux

VDD Operating Supply Voltage 1.8 3.3 V

IDD Supply Current E = 0 lux 0.65 µA

E = 100 lux 3.5 µA

E = 1,000 lux 10 15 µA

VOUT0 Light-to-Voltage Accuracy E = 100 lux 0.185 V

VOUT1 Light-to-Voltage Accuracy E = 1000 lux 0.460 0.580 0.680 V

VDARK Voltage Output in the absence of light E = 0 lux, REXT = 10MΩ20 50 mV

ΔVOUT Output Voltage Variation Over Three Light

Sources: Fluorescent, Incandescent and

Halogen

10 %

PSRR Power Supply Rejection Ratio E = 100 lux, VDD = 1.8V to 3.6V 2.5 mV/V

VO-CMPL Maximum Output Compliance Voltage at 95% of

Nominal Output

VDD -0.7V V

VO-MAX Maximum Output Voltage Swing VDD V

tRRise Time E = 0 lux to 300 lux 68 µs

E = 0 lux to 1000 lux 68 µs

tFFall Time E = 300 lux to 0 lux 1830 µs

E = 1000 lux to 0 lux 970 us

tDDelay Time for Rising Edge E = 0 lux to 300 lux 352 µs

E = 0 lux to 1000 lux 145 µs

tSDelay Time for Falling Edge E = 300 lux to 0 lux 22 µs

E = 1000 lux to 0 lux 22 µs

ISC Short Circuit Current of Op Amp ±11 mA

SR Slew Rate of Op Amp ±10 V/ms

VOS Offset Voltage of Op Amp ±1.2 mV

ISL29102

4FN6483.1

July 15, 2010

FIGURE 1. TEST CIRCUIT FOR RISE/FALL TIME

MEASUREMENT

FIGURE 2. TIMING DIAGRAM

ISL29102

FUNCTION

GENERATOR

VDD

REXT

VOUT

POWER SUPPLY

SOURCE METER INPUT

LIGHT

OUTPUT

10% 90%

tF%

10%

90%

Typical Performance Curves

FIGURE 3. SPECTRAL RESPONSE FIGURE 4. SPECTRUM OF LIGHT SOURCES

FIGURE 5. RADIATION PATTERN

-0.2

0.0

0.2

0.4

0.6

0.8

1.0

1.2

300 400 600 800 1.0k

WAVELENGTH (nm)

NORMALIZED RESPONSE

LIGHT SENSOR RESPONSE

HUMAN EYE RESPONSE

1.1k 0

0.2

0.4

0.6

0.8

1.0

1.2

300 400 500 600 700 800 900 1000 1100

WAVELENGTH (nm)

NORMALIZED LIGHT INTENSITY

SUN

HALOGEN

INCANDESCENT

FLUORESCENT

RADIATION PATTERN

LUMINOSITY

ANGLE

RELATIVE SENSITIVITY

90°

80°

70°

60°

50°

40°

30°

20° 10° 0° 10° 20°

30°

40°

50°

60°

70°

80°

90°

0.2 0.4 0.6 0.8 1.0

ISL29102

5FN6483.1

July 15, 2010

FIGURE 6. OUTPUT VOLTAGE vs LIGHT INTENSITY FIGURE 7. OUTPUT VOLTAGE vs LIGHT INTENSITY

FIGURE 8. OUTPUT VOLTAGE vs LIGHT INTENSITY FIGURE 9. OUTPUT VOLTAGE vs LIGHT INTENSITY

FIGURE 10. TRANSIENT TIME vs LUX CHANGE FROM/TO

0LUX

FIGURE 11. OUTPUT VOLTAGE vs TEMPERATURE AT 0 LUX

Typical Performance Curves (Continued)

4x10-4

0.004

0.040

0.400

4.000

0.1 1 10 100 1000 10000

LIGHT INTENSITY (LUX)

OUTPUT VOLTAGE (V)

HALOGEN

FLUORESCENT

INCANDESCENT

VDD = 3V

REXT = 40kΩ

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0 100 200 300 400 500 600 700 800 900 1000

LIGHT INTENSITY (Lux)

HALOGEN

FLUORESCENT

INCANDESCENT

OUTPUT VOLTAGE (V)

VDD = 3V

REXT = 100kΩ

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

0 102030405060708090100

LIGHT INTENSITY (LUX)

HALOGEN

FLUORESCENT

INCANDESCENT

OUTPUT VOLTAGE (V)

VDD = 3V

REXT = 1MΩ

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0246810

LIGHT INTENSITY (LUX)

13579

HALOGEN

FLUORESCENT

INCANDESCENT

OUTPUT

VOLTAGE

(V)

VDD = 3V

REXT = 1MΩ

0.01

0.1

1.00

10.00

100.00

1000.00

1 10 100 1000

LUX CHANGE FROM/TO 0 LUX (LUX)

TRANSIENT TIME (ms)

FALL TIME

DELAY TIME BEFORE RISING

RISE TIME

DELAY TIME BEFORE FALLING

-0.05

0.00

0.05

0.10

0.15

0.20

0.25

0.30

-50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90

TEMPERATURE (°C)

OUTPUT VOLTAGE (V)

0.000

0.005

0.025

EQUIVALENT INPUT LIGHT (LUX)

VDD = 3V

REXT = 10MΩ

ISL29102

6FN6483.1

July 15, 2010

FIGURE 12. SUPPLY CURRENT vs TEMPERATURE AT 0 LUX FIGURE 13. NORMALIZED OUTPUT VOLTAGE vs

TEMPERATURE

FIGURE 14. SUPPLY CURRENT vs TEMPERATURE FIGURE 15. NORMALIZED OUTPUT VOLTAGE vs SUPPLY

VOLTAGE

FIGURE 16. SUPPLY CURRENT vs SUPPLY VOLTAGE FIGURE 17. TRANSIENT RESPONSE OF ISL29102 TO

CHANGE IN LIGHT INTENSITY

Typical Performance Curves (Continued)

0.80

0.90

1.00

1.10

-50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90

TEMPERATURE (°C)

SUPPLY CURRENT (µA)

VDD = 3V

REXT = 10MΩ

NO LOAD

0.80

0.85

0.90

0.95

1.00

1.05

1.10

1.15

1.20

-50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90

TEMPERATURE (°C)

NORMALIZED OUTPUT VOLTAGE

= 3V

300 Lux

1000 Lux

FLUORESCENT LIGHT

-50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90

TEMPERATURE (°C)

SUPPLY CURRENT (µA)

300 Lux

1000 Lux

REXT = 100kΩ

NO LOAD

VDD = 3V

FLUORESCENT LIGHT

0.990

0.995

1.000

1.005

1.010

1.52.02.53.03.54.0

SUPPLY VOLTAGE (V)

NORMALIZED OUTPUT VOLTAGE

FLUORESCENT LIGHT

1000 Lux

VDD = 3V

REXT = 100kΩ

9.0

9.2

9.4

9.6

1.52.02.53.03.54.0

SUPPLY VOLTAGE (V)

SUPPLY CURRENT

FLUORESCENT LIGHT

1000 Lux

REXT = 100kΩ

NO LOAD

LIGHT INTENSITY

VDD = 3V, REXT = 100kΩ

LIGHT INTENSITY RISES FROM 0 LUX TO 300 LUX

AND FALLS FROM 300 LUX TO 0 LUX WITH WHITE LED

VOUT

ISL29102

7FN6483.1

July 15, 2010

Application Information

Light-to-Voltage Conversion

The ISL29102 has responsiveness that is a square-root

function of the light intensity intercepted by the photodiode in

lux. Because the photodiode has a responsivity that

resembles the human eye, conversion rate is independent of

the light source (fluorescent light, incandescent light or direct

sunlight).

In Equation 1, VOUT is the output voltage, E is the light

intensity and REXT is the value of the external resistor. The

REXT is used to set the light-to-voltage scaling constant. The

compliance of the ISL29102's output circuit may result in

premature saturation when an excessively large REXT is

used. The output compliance voltage is 700mV below the

supply voltage as listed in VO-MAX of the “Electrical

Specifications” table on page 3.

Optical Sensor Location Outline

The green area in Figure 18 shows the optical sensor

location outline of ISL29102. Along the pinout direction, the

center line (CL) of the sensor coincides with that of the

packaging. The sensor width in this direction is 0.39mm.

Perpendicular to the pinout direction, the CL of the sensor

has an 0.19mm offset from the CL of packaging away from

pin 1. The sensor width in this direction is 0.46mm.

VOUT

1.8μA

100lux

-----------------------ER

EXT

×=(EQ. 1)

FIGURE 18. 6 LD ODFN SENSOR LOCATION OUTLINE

2.10mm

2.00mm

0.39mm

0.46mm

0.19mm

SENSOR OFFSET

ISL29102

All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems.

Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality

Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without

notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and

reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result

from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.

For information regarding Intersil Corporation and its products, see www.intersil.com

FN6483.1

July 15, 2010

Products

Intersil Corporation is a leader in the design and manufacture of high-performance analog semiconductors. The Company's

products address some of the industry's fastest growing markets, such as, flat panel displays, cell phones, handheld products, and

notebooks. Intersil's product families address power management and analog signal processing functions. Go to

www.intersil.com/products for a complete list of Intersil product families.

*For a complete listing of Applications, Related Documentation and Related Parts, please see the respective device information

page on intersil.com: ISL29102

To report errors or suggestions for this datasheet, please go to www.intersil.com/askourstaff

FITs are available from our website at http://rel.intersil.com/reports/search.php

Revision History

The revision history provided is for informational purposes only and is believed to be accurate, but not warranted. Please go to web to make sure

you have the latest Rev.

DATE REVISION CHANGE

12/12/08 FN6483.1 Added MSL Note 3 to “Ordering Information” to page 1.

Corrected Eval board name from ISL29102IROZEVALZ to ISL29102IROZ-EVALZ in “Ordering Information”

on page 1.

Added “Related Literature” on page 1 per new data sheet standards.

Updated Theta JA in “Thermal Information” on page 3 from 90C/W to 88C/W per ASYD in Intrepid. Added

Note 4.

Revised VO-MAX spec in “Electrical Specifications” table on page 3 from:

Description: Maximum Output Compliance voltage at 95% of nominal output

TYP: VDD - 0.7V

To:

Description: Maximum Output Voltage Swing

TYP: removed (was VDD - 0.7V)

MAX: added "VDD"

Added new spec to “Electrical Specifications” table on page 3 as follows:

VO-CMPL

Description: Maximum Output Compliance voltage at 95% of nominal output

TYP: VDD - 0.7V

Updated package outline drawing L6.2x2.1 on page 9 to most recent revision. Changes to POD were:

Changing the way we dimension the solder pad recommendation on the PODs. Changes inc:

Bottom View: Added dimension callouts for solder pad

Land Pattern: Added package outline and package outline dimensions.

Added lead width of 6x0.30±0.05 and note 4 callout to bottom view

Increased the size of the pin 1 shaded area

Added “Revision History” on page 8 & “Products” on page 8 per new data sheet standards.

7/1/08 FN6483.0 Initial release.

ISL29102

9FN6483.1

July 15, 2010

ISL29102

Package Outline Drawing

L6.2x2.1

6 LEAD OPTICAL DUAL FLAT NO-LEAD PLASTIC PACKAGE (ODFN)

Rev 2, 6/10

located within the zone indicated. The pin #1 identifier may be

Unless otherwise specified, tolerance : Decimal ± 0.05

Tiebar shown (if present) is a non-functional feature.

The configuration of the pin #1 identifier is optional, but must be

between 0.15mm and 0.30mm from the terminal tip.

Dimension applies to the metallized terminal and is measured

Dimensions in ( ) for Reference Only.

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

either a mold or mark feature.

Dimensions are in millimeters.1.

NOTES:

BOTTOM VIEW

DETAIL "X"

SIDE VIEW

TYPICAL RECOMMENDED LAND PATTERN

TOP VIEW

(4X) 0.10

INDEX AREA

PIN 1

BPIN #1

B0.10 MAC

SEATING PLANE

BASE PLANE

0.08

0.10

SEE DETAIL "X"

0 . 00 MIN.

0 . 05 MAX.

0 . 2 REF

2.10

2.00

2.10

2.50

(1.35)

(6x0.30)

0.65

(6x0.55)

(6x0.20)

(4x0.65)

1.30 REF1.35

0.65

6x0.35 ± 0.05

PACKAGE

6X 0.30±0.05

INDEX AREA

OUTLINE