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UM4157 Datasheet, PDF (1/10 Pages) Union Semiconductor, Inc. – 0.8Ω Low-Voltage SPDT Analog Switch
UM4157
0.8Ω Low-Voltage SPDT Analog Switch
UM4157 SOT363
General Description
The UM4157 is a low on resistance, low-power, Single Pole Double Throw (SPDT) analog switch.
This product has been designed for switching audio signals in applications such as cell phones
and portable media players. The ultra-low 0.8Ω impedance, sub μA current consumption, and
1.65V to 4.3V operating voltage range make this product ideal for battery-powered applications.
The UM4157 also features bidirectional operation and break-before-make functionality. This
device is fully specified for operation at 1.8V, 2.5V, and 3.3V.
Applications
z Cellular Phone
z PDA
z Portable Media Player
Features
z Typical 0.8Ω On Resistance (RON) for 2.7V
Supply
z 0.23Ω typical RON Flatness for 2.7V Supply
z Broad VCC Operating Range: 1.65V to 4.3V
z Low THD (0.02% Typical for 32Ω Load)
z Control Logic is 1.8V CMOS Logic
Compatible
Pin Configurations
Top View
UM4157
SOT363
Ordering Information
Part Number
UM4157
Packaging Type
SOT363
Function Table
Select Input
L
H
Marking Code
Shipping Qty
U7H
3000pcs/7 Inch Tape & Reel
Function
B0 Connected to A
B1 Connected to A
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http://www.union-ic.com Rev.01 Aug.2009
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