AS1713

Difference Amplifier, 10MHz, 10V/µs, Rail-to-Rail I/O

with Shutdown

Dat a Sh eet

www.austriamicrosystems.com

Revision 1.01

1 - 15

1 General Description

The AS1713 is a low cost cmos difference amplifier pro-

viding extended common mode voltage range for a sin-

gle rail 5V supply. Resistor trimming during final test

ensures a typical common mode rejection of 60dB. Low

input bias currents, 10MHz gain bandwidth, low total

harmonic distortion (THD) and a rail-to-rail output drive

capability of typically 200mA (@ 5V supply) provide sup-

port for a number of signal processing applications such

as audio line receivers, ground loop breakers and cur-

rent sensing. Linearity is suitable for 12bit ADC mea-

surement.

A classical single amplifier approach ensures that the

differential gain is determined by a simple ratio of two

internal resistors. A fixed gain of x1 is available.

Single ended input resistance is equalised (10k

Ω ±10%)

at each input terminal. This feature provides additional

common mode rejection when long balanced input

cables connect at the input.

A EN pin reduces the quiescent current of the device.

2 Key Features

!

Constant Output Drive Capability: 50mA

!

Rail-to-Rail Input and Output

!

Supply Current: 1.6mA

!

Single-Supply Operation: 2.7 to 5.5V

!

Voltage Gain: 1

!

Gain-Bandwidth Product: 10MHz

!

High Slew Rate: 10V/µs

!

Power-Supply Rejection Ratio: -70dB

!

Common Mode Rejection Ratio: -60dB

!

No Phase Reversal for Overdriven Inputs

!

Unity-Gain Stable for Capacitive Loads: Up to 100pF

!

Shutdown Mode Current: 1nA

!

MLPD (2x2mm) 8-pin package

3 Applications

The device is ideal for headphone amplifiers with ground

interference rejection, infotainment high drive audio line

buffers with ground interference rejection, audio differ-

ential-to-single-ended conversion and instrumentation

amplifier back-end.

Figure 1. Block Diagram

SENSE

OUT

REF

INN

EN

INP

VDD

VSS

+

–

AS1713