FSA2257_09 Datasheet, PDF (1/11 Pages) Fairchild Semiconductor – Low RON Low-Voltage Dual SPDT Bi-Directional Analog Switch

May 2009
FSA2257
Low R_ON Low-Voltage Dual SPDT Bi-Directional
Analog Switch
Features
■ Maximum 1.15Ω On Resistance (R_ON) for 4.5V Supply
■ 0.3Ω Maximum R_ON Flatness for +5V Supply
■ Space-Saving MicroPak™ Packaging
■ Broad V_CC Operating Range: 1.65V to 5.5V
■ Fast Turn-on / Turn-off Time
■ Break-Before-Make Enable Circuitry
■ Over-Voltage Tolerant TTL-Compatible Control Input
Applications
■ Cell Phone
■ PDA
■ Mobile Devices
Description
The FSA2257 is a high-performance bi-directional dual
Single-Pole/Double-Throw (SPDT) analog switch. This
switch can be configured as either a multiplexer or a de-
multiplexer by select pins. The device features ultra-low
R_ON of 1.3Ω maximum at 4.5V V_CC and operates over
the wide V_CC range of 1.65V to 5.5V. The device is fabri-
cated with submicron CMOS technology to achieve fast
switching speeds and is designed for break-before-make
operation. The select input is TTL-level compatible.
Ordering Information
Package
Part Number Number Eco Status
Top
Mark
Package Description
FSA2257L10X MAC010A
RoHS
EP 10-Lead MicroPak™, 1.6 x 2.1mm
FSA2257MTCX MTC14
FSA2257MUX MUA101A
RoHS
RoHS
14-Lead Thin Shrink Small Outline
FSA2257 Package (TSSOP), JEDEC MO-153,
4.4mm Wide
FSA
2257
10-Lead Molded Small Outline
Package (MSOP), JEDEC MO-187,
3.0mm
Packing
Method
5000 Units on
Tape and Reel
2500 Units on
Tape and Reel
4000 Units on
Tape and Reel
For Fairchild’s definition of Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.
Base Band
Voice/Bell Ring
32Ω Earpiece
Base Band
Processors
with Melody
Ring
Generation
Amp
Select Pin
FSA2257
Figure 1. Block Diagram
8Ω Loud Speaker
© 2006 Fairchild Semiconductor Corporation
FSA2257 Rev. 1.0.5
www.fairchildsemi.com