FSA5157_08 Datasheet, PDF (1/12 Pages) Fairchild Semiconductor – 0.4Ω Low-Voltage SPDT Analog Switch

February 2008
FSA5157
0.4Ω Low-Voltage SPDT Analog Switch
Features
■ Typical 0.4Ω On Resistance (R_ON) for +2.7V Supply
■ FSA5157 Features Less than 12μA I_CCT Current
When S Input is Lower than V_CC
■ 0.25Ω Maximum R_ON Flatness for +2.7V Supply
■ 1.0 x 1.45mm 6-Lead MicroPak™ Package
■ Broad V_CC Operating Range: 1.65V to 4.3V
■ Low THD (0.02% Typical for 32Ω Load)
■ High-Current Handling Capability
(350mA Continuous Current Under 3.3V Supply)
■ Control Logic is 1.8V CMOS Logic Compatible
Applications
■ Cellular Phone
■ PDA
■ Portable Media Player
General Description
The FSA5157 is a low on resistance, low-power, Single
Pole Double Throw (SPDT) analog switch. This product
has been designed for switching audio signals in applica-
tions such as cell phones and portable media players.
The ultra-low 0.4Ω impedance, sub-μA current consump-
tion, and 1.65V to 4.3V operating voltage range makes
this product ideal for battery-powered applications. The
FSA5157 also features bi-directional operation and
break-before-make functionality. This device is fully
specified for operation at 1.8V, 2.5V, and 3.3V.
A growing number of applications require the voltage
applied to the select input to be lower than the V_CC
applied. Under this condition, most switches would typi-
cally consume over 100μA of current. This would be an
unacceptable level for battery-powered applications. The
FSA5157 is designed to minimize current consumption
under this condition. The I_CCT is specified for <12μA under
a worst-case condition of V_CC = 4.3V and V_IN = 1.8V.
Ordering Information
Order Number
FSA5157P6X
FSA5157L6X
Top Mark
Package Description
C57
6-Lead SC70, EIAJ SC88, 1.25mm Wide
FT
6-Lead MicroPak, 1.0mm Wide
Packing Method
3000 Units on Tape and Reel
5000 Units on Tape and Reel
All packages are lead free per JEDEC: J-STD-020B standard.
Application Diagram
V_CC
Headphone
Audio
Amplifier
Internal
S
Speaker
Figure 1. Application Diagram
MicroPak™ is a trademark of Fairchild Semiconductor Corporation.
©2006 Fairchild Semiconductor Corporation
FSA5157 Rev. 1.0.3
www.fairchildsemi.com