SGM4157YC

SPDT 0.8Ω Analog Switch

GENERAL DESCRIPTION

The SGM4157YC is a single Low ON-Resistance (0.8Ω),

fast single-pole double-throw (SPDT) CMOS switch. It

is designed for low operating voltage, high current

switching of speaker output for cell phone applications.

The SGM4157YC can handle a balanced microphone/

speaker/ring tone generator in a monophone mode. The

device contains a break−before−make (BBM) feature.

The control input, IN, tolerates input drive signals up to

5.5V, independent of supply voltage.

SGM4157YC is available in SC70-6 package.

APPLICATIONS

Portable Instrumentation

Battery-Operated Equipment

Computer Peripherals

Cell Phones

PDAs

MP3s

PIN DESCRIPTION

NAME

PIN

FUNCTION

NO

1

Normally-open terminal

GND

2

Ground

NC

3

Normally-closed terminal

COM

4

Common terminal

5

Power supply

IN

6

Digital control pin to connect

the COM terminal to the NO

or NC terminals

Note: NO, NC and COM terminal may be an input or output.

FEATURES

− Voltage Operation: 1. 8V to 4.2V

− On-Resistance: 0.8Ω (TYP)

− -3dB Bandwidth: 100MHz

− High Off-Isolation: -50dB at 10MHz

− Rail-to-Rail Operation

− Low Static Power

− TTL/CMOS Compatible

− Break-Before-Make Switching

− Extended Industrial Temperature Range: -40°C to +85°C

− Microsize Package

PIN CONFIGURATION（TOP VIEW）

FUNCTION TABLE

LOGIC

NO

NC

0

OFF

ON

1

ON

OFF

Switches Shown For Logic “0” Input

REV. A

SG Microelectronics Co, Ltd

Tel: 86/10/51798160/80

www.sg-micro.com