AS1747 datasheet(1/13 Pages) AMSCO

Part #	AS1747

Description	Low-Voltage, Dual SPDT, Audio Clickless Switch with Negative Rail Capability

PDF	13 Pages

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Manufacturer	AMSCO [ams AG]

Direct Link	http://www.ams.com

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AS1747

Low-Vo ltage, Dual SPDT, Audio Clickless Switch

with Negative Rail Capa bility

www.austriamicrosystems.com

Revision 1.01

1 - 13

Datasheet

1 General Description

The SPDT (single-pole/double-throw) switch AS1747

allows signals below ground to pass through without dis-

tortion. This analog switch is ideal for switching audio

signals, due to the supply voltage from +1.8V to +5.5V

and the low 0.4

Ω on-resistance.

This SPDT switch is available in space-saving 10-pin

TDFN 3x3 packages and operate over the -40ºC to

+85ºC extended temperature range.

Figure 1. AS1747 - Typical Operating Circuit

2 Key Features

!

Distortion -Free Negative Signal Throughput Down

to VCC - 5.5V

!

Low On-Resistance (RON)

0.4

Ω at +2.7V Supply

!

0.25

Ω On-Resistance Flatness

!

0.03

Ω On-Resistance Matching

!

+1.8V to 5.5V Supply Voltage

!

-90dB Crosstalk (100kHz)

!

-65dB Off-Isolation (100kHz)

!

Available in 10-pin TDFN 3x3 Packages

3 Applications

The device is ideal for cell phones, PDAs and hand-held

devices, notebook computers and MP3 players.

Audio

Source 1

Audio

Source 2

Out+

Out-

Out+

Out-

NO2

NC2

NO1

NC1

IN1

COM1

IN2

COM2

8

Ω

Speaker

Input

Select

AS1747

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AS1747 Datasheet(PDF) 1 Page - ams AG

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