FSA1259K8X - Fairchild - Datasheet.Directory

July 2009

FSA1259 / FSA1259A Rev. 1.0.6

FSA1259 / FSA1259A — Low-Voltage, 1Ω Dual SPST Analog Switch with Power-Off Isolation

FSA1259 / FSA1259A

Low-Voltage, 1Ω Dual SPST Analog Switch with

Power-Off Isolation

Features

 Power-Off Isolation (VCC=0V)

 1Ω On Resistance (RON) for 4.5V VCC

 0.25Ω Maximum RON Flatness for 4.5V VCC

 Space-Saving, US8 Surface Mount Package

 Broad VCC Operating Range: 1.65V to 5.50V

 Fast Turn-On and Turn-Off Times

 Break-Before-Make Enable Circuitry

Applications

 Cellular Phone

 Portable Media Player

 PDA

Description

The FSA1259/FSA1259A is a high-performance, dual,

Single-Pole / Single-Throw (SPST) analog switch. The

device features ultra-low RON of 1Ω at 4.5V VCC and

operates over the wide VCC range of 1.65V to 5.50V.

The FS1259A allows for reduced input thresholds on

the select pins.

The device is fabricated with sub-micron CMOS

technology to achieve fast switching speeds and is

designed for break-before-make operation.

Ordering Information

Part Number Top

Mark

Operating

Temperature

Range

Package Eco Status Packing

Method

FSA1259K8X 1259 -40°C to +85°C 8-Lead US8, JEDEC MO-187,

Variation CA, 3.0mm Wide Green 3000 Units

Tape and Reel

FSA1259AK8X 59A -40°C to +85°C 8-Lead US8, JEDEC MO-187,

Variation CA, 3.0mm Wide Green 3000 Units

Tape and Reel

For Fairchild’s defini t i on of Eco St atus, pleas e visit: http://www.fairchildsemi.com/company/green/rohs_green.html.

V

CC

GND

1 8

4

3

2

5

6

7

1A

1B

2S

1S

2B

2A

Figure 1. Analog Symbols

FSA1259 / FSA1259A Rev. 1.0.6 2

FSA1259 / FSA1259A — Low-Voltage, 1Ω SPST Analog Switch with Power-Off Isolation

Pin Assignments

Vcc

GND

18

7

6

5

4

3

2

1A

1B

2S

2A

2B

1S

Figure 2. Pin Assignments (Top View)

Pin Definitions

Pin # Name Description

1 1A Data Port

2 1B Data Port

3 2S Control Input

4 GND Ground

5 2A Data Port

6 2B Data Port

7 1S Control Input

8 VCC Supply Voltage

Truth Table

Control Input (S) Function

LOW Disconnected

HIGH A Connected to B

FSA1259 / FSA1259A Rev. 1.0.6 3

FSA1259 / FSA1259A — Low-Voltage, 1Ω SPST Analog Switch with Power-Off Isolation

Absolute Maximum Ratings

Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be

operable above the recommended operating conditions and stressing the parts to these levels is not recommended.

In addition, extended exposure to stresses above the recommended operating conditions may affect device

reliability. The absolute maximum ratings are stress ratings only.

Symbol Parameter Min. Max. Unit

VCC Supply Voltage -0.5 7.0 V

VSW Switch Voltage(1) -0.5 VCC +-0.5 V

VIN Input Voltage(1) -0.5 6.5 V

IIK Input Diode Current -50 mA

ISW Switch Current (Continuous) 200 mA

ISWPEAK Peak Switch Current (Pulsed at 1ms Duration,

<10% Duty Cycle) 400 mA

PD Power Dissipation at 85°C 3.0 µW

TSTG Storage Temperature Range -65 +150 °C

TJ Maximum Junction Temperature +150 °C

TL Lead Temperature (Soldering, 10 seconds) +260 °C

Human Body Model (JEDEC: JESD22-A114) 8000 V

Charged Device Model (JEDEC: JESD22-C101) 2000 V

ESD

Machine Model (JEDEC: JESD22-A115) 350 V

Note:

1. The input and output negative ratings may be exceeded if the input and output diode current ratings are observed.

Recommended Operating Conditions

The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended

operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not

recommend exceeding them or designing to Absolute Maximum Ratings.

Symbol Parameter Min. Max. Unit

VCC Supply Voltage 1.65 5.50 V

ASEL Control Input Voltage(2) 0 VCC V

VSW Switch Input Voltage 0 VCC V

TA Operating Temperature -40 +85 °C

θJA Thermal Resistance, Still Air 215 °C/W

Note:

2. Control Input must be held HIGH or LOW; it must not float.

FSA1259 / FSA1259A Rev. 1.0.6 4

FSA1259 / FSA1259A — Low-Voltage, 1Ω SPST Analog Switch with Power-Off Isolation

Electrical Characteristics

All typical values are at 25°C unless otherwise specified.

TA=+25°C TA=-40 to +85°C

Symbol Parameter VCC (V) Conditions Min. Typ. Max. Min. Max. Unit

4.50 to 5.50 2.4

3.00 to 3.60 2.0

2.30 to 2.70 1.8

Input Voltage High

(FSA1259)

1.65 to 1.95 1.5

4.50 to 5.50 1.0

3.00 to 3.60 1.0

2.30 to 2.70 0.95

VIH

Input Voltage High

(FSA1259A)

1.65 to 1.95 0.95

V

4.50 to 5.50 0.8

3.00 to 3.60 0.8

2.30 to 2.70 0.6

Input Voltage Low

(FSA1259)

1.65 to 1.95 0.6

4.50 to 5.50 0.75

3.00 to 3.60 0.65

2.30 to 2.70 0.55

VIL

Input Voltage Low

(FSA1259A)

1.65 to 1.95 0.5

V

5.50 VIN=0 or VCC -10 10 -50 50

3.60 VIN=0 or VCC -2 2 -20 20

2.70 VIN=0 or VCC -2 2 -20 20

IIN Control Input

Leakage

1.95 VIN=0 or VCC -2 2 -20 20

nA

5.50 A=1V, B=4.5V or

B=4.5, A=1V -10 10 -50 50

3.60 A=1V, B=4.5V or

B=4.5, A=1V -5 5 -50 50

2.70 A=0.5V, B=2.3V or

B=2.3, A=0.5V -5 5 -50 50

INO(0FF) Off-Leakage

Current

1.95 A=0.3V, B=1.65V or

B=1.65, A=0.3V -5 5 -50 50

nA

5.50 A=Floating; B=4.5V, 1V -5 5

-50 50

3.60 A=Floating; B=3.0V, 1V -2 2

-20 20

2.70 A=Floating; B=2.3V, 0.5V -2 2

-20 20

INO(On)

On-Leakage

Current of

Port B

1.95 A=Floating; B=1.65V, 0.3V -2 2

-20 20

nA

5.50 A=1V, 4.5V; B=Floating -5 5 -50 50

3.60 A=1V, 3.0V; B=Floating -2 2 -20 20

2.70 A=0.5V, 2.3; B=Floating -2 2 -20 20

IA(ON)

On-Leakage

Current of

Port A

1.95 A=0.3V, 1.65V; B=Floating -2 2 -20 20

nA

IOFF

Power Off

Leakage Current

of Port A & Port B

0 A=0 to 5.5V; B=0 to 5.5V -1 1 -10 10 µA

FSA1259 / FSA1259A Rev. 1.0.6 5

FSA1259 / FSA1259A — Low-Voltage, 1Ω SPST Analog Switch with Power-Off Isolation

Electrical Characteristics (Continued)

All typical values are at 25°C unless otherwise specified.

TA=+25°C TA=-40 to

+85°C

Symbol Parameter VCC (V) Conditions

Min. Typ. Max. Min. Max.

Unit

4.50 IOUT=-100mA,

1B or 2B=0 to VCC 0.8 1.0 1.2

3.00 IOUT=-100mA,

1B or 2B=0 to VCC 1.0 1.5 1.8

2.30 IOUT=-8mA,

1B or 2B=0 to VCC 1.5 2.0 2.5

TA=25, 85°C 5.0 12.0 15.0

RPEAK Peak On

Resistance

1.65

IOUT=-2mA,

1B or 2B=0

to VCC TA=-40°C 20.0

Ω

4.50 IOUT=-100mA,

1B or 2B=2.5V 0.70 0.85 1.00

3.00 IOUT=-100mA,

1B or 2B=2.0V 0.9 1.3 1.6

2.30 IOUT=-8mA,

1B or 2B=1.8V 1.4 2.0 2.4

RON Switch On

Resistance(3)

1.65 IOUT=-2mA,

1B or 2B=1.5V 2.0 2.5 3.5

Ω

4.50 IOUT=-100mA,

1B or 2B=2.5V 0.05 0.10 0.10

3.00 IOUT=-100mA,

1B or 2B=2.0V 0.10 0.15 0.15

2.30 I=-8mA,

1B or 2B=1.8V 0.15 0.20 0.20

∆ RON

On Resistance

Matching

Between

Channels(4)

1.65 IOUT=-2mA

1B or 2B=1.5V 0.15 0.40 0.40

Ω

4.50 IOUT=-100mA, 1B or

2B=1.0V, 1.5V, 2.5V 0.10 0.25 0.25

3.00 IOUT=-100mA,

1B or 2B=0.8V, 2.0V 0.1 0.3 0.3

2.30 IOUT=-8mA,

1B or 2B=0.8V, 1.8V 0.2 1.0 1.0

RFLAT(ON) On Resistance

Flatness(5)

1.65 IOUT=-2mA,

1B or 2B=0.6V, 1.5V 1.5

Ω

5.50 VIN=0 or VCC, IOUT=0 5 50 500

3.60 VIN=0 or VCC, IOUT=0 1 25 300

2.70 VIN=0 or VCC, IOUT=0 1 20 250

ICC Quiescent Supply

Current

1.95 VIN=0 or VCC, IOUT=0 1 15 150

nA

ICCT

Increase in ICC per

Control Input

(FSA1259A)

4.5 to 5.5 Asel=1.8V 25 40 µA

Notes:

3. On resistance is determined by the voltage drop between the A and B pins at the indicated current through

the switch.

4. ∆RON=RON maximum – RON minimum; measured at identical VCC, temperature, and voltage.

5. Flatness is defined as the difference between the maximum and minimum value of on resistance over the

specified range of conditions.

FSA1259 / FSA1259A Rev. 1.0.6 6

FSA1259 / FSA1259A — Low-Voltage, 1Ω SPST Analog Switch with Power-Off Isolation

AC Electrical Characteristics

All typical values are at VCC=1.8V, 2.5V, 3.0V, 5.0V at 25°C unless otherwise specified.

TA=+25ºC TA=-

40to+85ºC

Symbol Parameter VCC (V) Conditions

Min. Typ. Max. Min. Max.

Unit Figure

4.50 to 5.50 1.0 4.0 7.5 1.0 9.0

3.00 to 3.60 1.5 6.0 9.5 1.0 10.0

2.30 to 2.70 2.0 8.0 10.0 1.0 12.0

tON Turn-On Time

1.65 to 1.95

1B or 2B=VCC,

RL=50Ω,

CL=35pF

3.0 14.0 18.0 1.0 20.0

ns Figure 11

4.50 to 5.50 4.5 6.5 11.0 3.5 13.0

3.00 to 3.60 4.5 8.0 11.0 3.0 14.0

2.30 to 2.70 4.5 9.0 12.5 3.0 15.0

Turn-Off Time

(FSA1259)

1.65 to 1.95

1B or 2B=VCC,

RL=50Ω,

CL=35pF

5.0 13.0 15.5 4.0 18.5

ns Figure 11

4.50 to 5.50 4.5 13.0 17.0 3.5 20.0

3.00 to 3.60 4.5 13.5 17.0 3.0 20.0

2.30 to 2.70 4.5 16.0 20.0 3.0 23.0

tOFF

Turn-Off Time

(FSA1259A)

1.65 to 1.95

1B or 2B=VCC,

RL=50Ω,

CL=35pF

5.0 24.0 33.0 4.0 36.0

ns Figure 11

4.50 to 5.50 15

3.00 to 3.60 11

2.30 to 2.70 8

Q Charge

Injection

1.65 to 1.95

CL=1.0nF,

VGEN=0V,

RGEN=0Ω

6

pC Figure 13

OIRR Off-Isolation 1.8 to 5.0 f=1MHz,

RL=50Ω -60 dB Figure 12

Xtalk Crosstalk 1.8 to 5.0 f=1MHz,

RL=50Ω -73 dB Figure 12

4.50 to 5.50 240

3.00 to 3.60 240

2.30 to 2.70 240

BW -3db Bandwidth

1.65 to 1.95

RL=50Ω

240

MHz Figure 15

1.8 .003 Figure 16

THD Total Harmonic

Distortion 5.0

RL=600Ω,

VIN=0.5VPP,

f=20Hz to

20kHz .001

%

Figure 16

Capacitance

TA=+25ºC

Symbol Parameter VCC (V) Conditions

Min. Typ. Max. Unit

CIN Control Pin Input Capacitance 0 f=1MHz

Figure 14 3 pF

COFF B Port Off Capacitance 1.65 to 5.50 f=1MHz

Figure 14 21 pF

CON A Port On Capacitance 1.65 to 5.50 f=1MHz

Figure 14 47 pF

FSA1259 / FSA1259A Rev. 1.0.6 7

FSA1259 / FSA1259A — Low-Voltage, 1Ω SPST Analog Switch with Power-Off Isolation

Typical Performance Characteristics

0.10

0.20

0.30

0.40

0.50

0.60

0.70

0.80

0.90

1.00

1.10

-1.00 0.00 1.00 2.00 3.00 4.00 5.00

V

IN

(V)

R

ON

(Ohms)

-40°C

25°C

85°C

0.40

0.50

0.60

0.70

0.80

0.90

1.00

1.10

1.20

1.30

1.40

-1.00 0.00 1.00 2.00 3.00 4.00

V

IN

(V)

R

ON

(Ohms)

-40°C

25°C

85°C

Figure 3. On Resistance (VCC=4.5V) Figure 4. On Resistance (VCC=3.0V)

0.40

0.50

0.60

0.70

0.80

0.90

1.00

1.10

1.20

1.30

1.40

1.50

1.60

-0.50 0.00 0.50 1.00 1.50 2.00 2.50 3.00

V

IN

(V)

RON (Ohms)

-40°C

25°C

85°C

V

IN

(V)

R

ON

(Ohms)

0.00

2.00

4.00

6.00

8.00

10.00

12.00

14.00

-0.50 0.00 0.50 1.00 1.50 2.00

-40°C

25°C

85°C

Figure 5. On Resistance (VCC=2.3V) Figure 6. On Resistance (VCC=1.65V)

0

-8

-7

-6

-5

-4

-3

-2

-1

1 10 100 1000 10000

Frequency (MHz)

Gain (dB)

0

-8

-7

-6

-5

-4

-3

-2

-1

110 100 1000 10000

Frequency (MHz)

Gain (dB)

Figure 7. Frequency Response (VCC=5.5V, CL=0pF) Figure 8. Frequency Response (VCC=3.3V, CL=0pF)

-90

-70

-50

-30

-10

0 1 10 100

Frequency (MHz)

Off Isolation (dB)

0.0000

0.0005

0.0010

0.0015

0.0020

0.0025

0.0030

0.0035

0.0040

10 100 1000 10000

Frequency (MHz)

THD (

%

)

VCC=1.8V

VCC=5.0V

Figure 9. Frequency Response (VCC=5.0V, CL=0pF) Figure 10. Total Harmonic Distortion

FSA1259 / FSA1259A Rev. 1.0.6 8

FSA1259 / FSA1259A — Low-Voltage, 1Ω SPST Analog Switch with Power-Off Isolation

Test Diagrams

t

OFF

t

R

= t

F

= 2.5ns

0.9 x V

OUT

0.9 x V

OUT

R

L

50

C

L

35pF

50%

GND

V

CC

Control

Input

Switch

Output

V

OUT

V

OUT

t

ON

V

CC

V

B

1B or 2B

C

L

includes fixture and stray capacitance. Logic input waveforms inverted for switches

that have the opposite logic sense.

A

S

0V

Figure 11. Turn On / Off Timing

GND

OFF ISOLATION = 20log

Network

Analyzer

MEAS REF

A

V

OUT

V

IN

ON-LOSS = 20log V

OUT

V

IN

CROSSTALK = 20log V

OUT

V

IN

1B

2B

S

V

CC

10nF

0 or V

CC

V

CC

50

50 50

V

OUT

V

IN

Figure 12. Off Isolation and Crosstalk

Q = (ΔV

OUT

) • (C

L

)

ΔV

OUT

V

OUT

In

V

GEN

C

L

VCC

1B or 2B

GND On Off

V

OUT

Off

In

On

Off

Control

Input

R

GEN

S

A

Figure 13. Charge Injection

FSA1259 / FSA1259A Rev. 1.0.6 9

FSA1259 / FSA1259A — Low-Voltage, 1Ω SPST Analog Switch with Power-Off Isolation

Test Diagrams (Continued)

GND

A

S

V+

0V

or

VCC

f = 1MHz

Capacitance

Meter

10nF

1B or 2B

Figure 14. On / Off Capacitance Measurement Setup

Signal

Generator

0dBm

V

IN

V

CC

B

N

50

10nF

S

Logic Input

0V or V

CC

GND

Analyzer

A

Signal

Generator

0dBm

V

IN

V

CC

B

N

R

L

10nF

S

Logic Input

0V or V

CC

GND

Analyzer

A

Figure 15. Bandwidth Figure 16. Harmonic Distortion

FSA1259 / FSA1259A Rev. 1.0.6 10

FSA1259 / FSA1259A — Low-Voltage, 1Ω SPST Analog Switch with Power-Off Isolation

Physical Dimensions

0.30 TYP

SEATING PLANE

0.10-0.18

0.13 AB C

C. DIMENSIONS ARE EXCLUSIVE OF BURRS, MOLD FLASH,

D. DIMENSIONS AND TOLERANCES PER ANSI Y14.5M, 1982.

AND TIE BAR EXTRUSIONS.

MAB08AREVC

0.50TYP

B. DIMENSIONS ARE IN MILLIMETERS.

A. CONFORMS TO JEDEC REGISTRATION MO-187

-C-

0.17-0.27

0.10

0.00

DETAIL A

0°-8°

0.4 TYP

-B-

0.70±0.10

ALL LEAD TIPS

0.2 CBA

3.1±.1

0.15

PIN #1 IDENT.

0.90 MAX

ALL LEAD TIPS

0.1 C

1.55

8

14

2.3±0.1

5

-A-

0.70

2.70

3.40

1.00

0.5 TYP

DETAIL A

1.80

GAGE PLANE

0.12

Figure 17. 8-Lead US8, JEDEC MO-187, Variation CA, 3.0mm Wide Package

Pack age drawings are provided as a service to customers consideri ng Fai rchild components . Drawings may c hange i n any manner

without notice. P l ease note the revi sion and/or date on t he drawing and contac t a Fairchild S emiconductor representative to verify

or obtain the most recent revi sion. Pac kage specif i cations do not expand the terms of Fai rchild’s worldwi de terms and condition s,

specifically the warranty t herei n, which covers Fairc hi l d products.

Always vis i t Fairchild S emiconductor’s online packaging area for the most recent package drawings:

http://www.fairchildsemi.com/packaging/.

FSA1259 / FSA1259A Rev. 1.0.6 11

FSA1259 / FSA1259A — Low-Voltage, 1Ω SPST Analog Switch with Power-Off Isolation