Datasheet

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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 (V

=0V)

 1Ω On Resistance (R

) for 4.5V V

 0.25Ω Maximum R

Flatness for 4.5V V

 Space-Saving, US8 Surface Mount Package

 Broad V

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 R

of 1Ω at 4.5V V

and

operates over the wide V

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 definition of Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.

GND

1 8

Figure 1. Analog Symbols

Summary of content (11 pages)

PAGE 1
FSA1259 / FSA1259A Low-Voltage, 1Ω Dual SPST Analog Switch with Power-Off Isolation Features 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. 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.
PAGE 2
1A 1 8 Vcc 1B 2S 2 7 3 6 GND 4 5 1S 2B 2A 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 5 2A Data Port 6 2B Data Port 7 1S Control Input 8 VCC Supply Voltage Ground Truth Table Control Input (S) Function LOW Disconnected HIGH A Connected to B © 2007 Fairchild Semiconductor Corporation FSA1259 / FSA1259A Rev. 1.0.
PAGE 3
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 VCC Parameter Supply Voltage (1) Min. Max. Unit -0.5 7.0 V -0.5 VCC +-0.5 V -0.5 6.
PAGE 4
All typical values are at 25°C unless otherwise specified. Symbol Parameter INO(On) IA(ON) IOFF TA=+25°C Min. Typ. TA=-40 to +85°C Max. Min. 2.4 Input Voltage High 3.00 to 3.60 2.0 (FSA1259) 2.30 to 2.70 1.8 1.65 to 1.95 1.5 4.50 to 5.50 1.0 Input Voltage High 3.00 to 3.60 1.0 (FSA1259A) 2.30 to 2.70 0.95 1.65 to 1.95 0.95 Max. 0.8 Input Voltage Low 3.00 to 3.60 0.8 (FSA1259) 2.30 to 2.70 0.6 1.65 to 1.95 0.6 4.50 to 5.50 0.75 Input Voltage Low 3.00 to 3.60 0.
PAGE 5
All typical values are at 25°C unless otherwise specified. Symbol Parameter VCC (V) Conditions Min. RPEAK RON ∆ RON RFLAT(ON) ICC ICCT Peak On Resistance Switch On Resistance(3) On Resistance Matching Between Channels(4) On Resistance Flatness(5) Quiescent Supply Current Increase in ICC per Control Input (FSA1259A) TA=-40 to +85°C TA=+25°C Typ. Max. Min. 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.
PAGE 6
All typical values are at VCC=1.8V, 2.5V, 3.0V, 5.0V at 25°C unless otherwise specified. Symbol Parameter VCC (V) Min. Typ. Max. Min. Max. 1.0 4.0 7.5 1.0 9.0 1.5 6.0 9.5 1.0 10.0 2.0 8.0 10.0 1.0 12.0 1.65 to 1.95 3.0 14.0 18.0 1.0 20.0 4.50 to 5.50 4.5 6.5 11.0 3.5 13.0 4.5 8.0 11.0 3.0 14.0 4.5 9.0 12.5 3.0 15.0 1.65 to 1.95 5.0 13.0 15.5 4.0 18.5 4.50 to 5.50 4.5 13.0 17.0 3.5 20.0 4.5 13.5 17.0 3.0 20.0 4.5 16.0 20.0 3.0 23.0 5.0 24.
PAGE 7
1.10 1.40 1.00 1.30 0.80 85°C 0.70 25°C 0.60 1.20 1.10 RON (Ohms) RON (Ohms) 0.90 -40°C 0.50 1.00 0.90 85°C 0.80 0.40 0.70 25°C 0.30 0.60 -40°C 0.20 0.50 0.10 -1.00 0.00 1.00 2.00 3.00 4.00 0.40 -1.00 5.00 0.00 1.00 VIN (V) Figure 3. On Resistance (VCC=4.5V) 4.00 Figure 4. On Resistance (VCC=3.0V) 14.00 -40°C 12.00 RON (Ohms) 1.40 1.30 RON (Ohms) 3.00 VIN (V) 1.60 1.50 10.00 1.20 1.10 85°C 1.00 0.90 0.80 25°C 0.70 -40°C 8.00 6.00 25°C 4.00 0.60 0.
PAGE 8
VCC VB 1B or 2B tR = tF = 2.5ns A Control Input VOUT RL 50 S VCC 50% 0V CL 35pF tOFF VOUT Switch Output GND 0.9 x VOUT 0V 0.9 x VOUT tON CL includes fixture and stray capacitance. Logic input waveforms inverted for switches that have the opposite logic sense. Figure 11. Turn On / Off Timing VCC 10nF Network Analyzer 0 or VCC S VCC A 1B 2B 50 50 VIN VOUT ON-LOSS = 20log VOUT VIN V CROSSTALK = 20log OUT VIN REF 50 Figure 12.
PAGE 9
10nF V+ A S 0V or VCC Capacitance Meter 1B or 2B f = 1MHz GND Figure 14. On / Off Capacitance Measurement Setup 10nF VIN 10nF VCC Signal Generator 0dBm VIN A BN Analyzer Signal Generator 0dBm 50 A Analyzer RL S Logic Input 0V or VCC VCC BN S Logic Input 0V or VCC GND Figure 15. Bandwidth © 2007 Fairchild Semiconductor Corporation FSA1259 / FSA1259A Rev. 1.0.6 Figure 16.
PAGE 10
8 5 0.70 -B- 2.3±0.1 3.1±.1 2.70 0.15 3.40 -A- 1.80 1.00 1.55 0.30 TYP 1 0.2 C B A ALL LEAD TIPS 4 PIN #1 IDENT. ALL LEAD TIPS 0.1 C 0.90 MAX 0.5 TYP DETAIL A 0.70±0.10 0.10-0.18 -C0.10 0.00 0.17-0.27 0.50TYP 0.13 A B C 0.4 TYP GAGE PLANE 0.12 0°-8° A. CONFORMS TO JEDEC REGISTRATION MO-187 B. DIMENSIONS ARE IN MILLIMETERS. C. DIMENSIONS ARE EXCLUSIVE OF BURRS, MOLD FLASH, AND TIE BAR EXTRUSIONS. SEATING PLANE DETAIL A D. DIMENSIONS AND TOLERANCES PER ANSI Y14.5M, 1982.
PAGE 11
FSA1259 / FSA1259A — Low-Voltage, 1Ω SPST Analog Switch with Power-Off Isolation © 2007 Fairchild Semiconductor Corporation FSA1259 / FSA1259A Rev. 1.0.6 www.fairchildsemi.