AS1713

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

with Shutdown

www.austriamicrosystems.com/Audio/OpAmps/AS1713

Revision 1.03

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Data sheet

1 General Description

The AS1713 is a low cost cmos difference amplifier providing

extended common mode voltage range for a single 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 support for a

number of signal processing applications such as audio line receiv-

ers, ground loop breakers and current sensing. Linearity is suitable

for 12bit ADC measurement.

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 ±20%) at each

input terminal. This feature provides additional common mode rejec-

tion 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 interfer-

ence rejection, infotainment high drive audio line buffers with ground

interference rejection, audio differential-to-single-ended conversion

and instrumentation amplifier back-end.

Figure 1. AS1713 - Block Diagram

SENSE

OUT

REF

INN

EN

INP

VDD

VSS

+

–

AS1713