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http://www.union-ic.com Rev.07 Feb.2014

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UM2268/UM2268A

0.4Ω Ultra Low ON-Resistance, Dual, SPDT Analog Switch

UM2268 QFN10 1.8×1.4

UM2268A QFN10 2.1×1.6

General Description

The UM2268/UM2268A is a dual, low-power single-pole/ double-throw (SPDT) analog switch that

operates from a single +1.8V to +4.4V supply.

The UM2268/UM2268A features guaranteed on-resistance matching (0.04Ω TYP) between

switches and guaranteed on resistance flatness over the signal range (0.08Ω TYP), as well as high

off-isolation and low crosstalk. This ensures excellent linearity and low distortion when switching

audio signals.

The UM2268 is available in Pb-free QFN10 package (1.8mm×1.4mm×0.55mm), while the

UM2268A is available in Pb-free QFN10 package (2.1mm×1.6mm×0.55mm).

Applications

Features



Portable Instrumentation



Battery-Operated Equipment



Computer Peripherals



Speaker and Earphone Switching



Medical Equipment



Audio and Video Switching





Low On-Resistance: 0.4Ω(TYP) at +4.4V



On-Resistance Matching: (0.04Ω TYP)



On-Resistance Flatness: (0.08Ω TYP)



-3dB Bandwidth:80MHz



Low Off-Isolation: -78dB (100kHz)



Low Crosstalk: -93dB (100kHz)



TTL/CMOS Compatible



Break-Before-Make Switching



Rail-to-Rail Input and Output Operation



Lead (Pb) Free QFN10 Package

Pin Configurations

Top View

1

2

3

4

5

6

7

8

9

10

NC2

NO1

NC1

V+

COM1

IN1

IN2

COM2

GND

NO2

M: Month Code

UM2268

QFN10 1.8×1.4