0V

250mV

2.55V

2V

1.29V

2V

5V

3.3V

GND1

GND2

VDD1

VDD2

VOUTP

VOUTN

VINP

VINN

AMC1100

www.ti.com

SBAS562 – APRIL 2012

Fully-Differential Isolation Amplifier for Energy Metering

Check for Samples: AMC1100

1

FEATURES

DESCRIPTION

The AMC1100 is a precision isolation amplifier with

2

•

±250-mV Input Voltage Range Optimized for

an output separated from the input circuitry by a

Shunt Resistors

•

Very Low Nonlinearity: 0.075% max at 5 V

magnetic interference. This barrier has been certified

•

Low Offset Error: 1.5 mV max

according to UL1577 and IEC60747-5-2. Used in

•

conjunction with isolated power supplies, this device

•

Low High-Side Supply Current:

prevents noise currents on a high common-mode

8 mA max at 5 V

voltage line from entering the local ground and

•

Input Bandwidth: 60 kHz min

interfering with or damaging sensitive circuitry.

•

Fixed Gain: 8 (0.5% Accuracy)

The AMC1100 input is optimized for direct connection

to shunt resistors or other low voltage level signal

•

High Common-Mode Rejection Ratio: 108 dB

sources. The excellent performance of the device

•

Low-Side Operation: 3.3 V

enables accurate current and voltage measurement

•

Certified Galvanic Isolation:

in energy-metering applications. The output signal

–

UL1577 and IEC60747-5-2 Approved

common-mode voltage is automatically adjusted to

either the 3-V or 5-V low-side supply.

–

The AMC1100 is fully specified over the extended

–

industrial temperature range of –40°C to +105°C and

–

Transient Immunity: 2.5 kV/µs min

is available in the SMD-type, gullwing-8 package.

•

Typical 10-Year Lifespan at Rated Working

Voltage (see Application Report SLLA197)

•

Fully Specified Over the Extended Industrial

Temperature Range

APPLICATIONS

•

Shunt Resistor Based Current Sensing in:

–

Energy Meters

–

Green Energy

–

Power Measurement Applications

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2012, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.