VOUTP

VOUTN

VDD2

GND2

GND1

VINN

VINP

VDD1

AMC1100

HV+

HV-

To Load

Floating

Power Supply

3.3 V, or 5.0 V

Gate Driver

Gate Driver

5.0 V

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Design

AMC1100

SBAS562A – APRIL 2012 – REVISED DECEMBER 2014

AMC1100 Fully-Differential Isolation Amplifier

1 Features

3 Description

The AMC1100 is a precision isolation amplifier with

1

•

±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 is certified to

•

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

•

High Common-Mode Rejection Ratio: 108 dB

to shunt resistors or other low voltage level signal

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, wide-body SOIC-8

•

Typical 10-Year Life Span at Rated Working

(DWV) and gullwing-8 (DUB) packages.

Voltage (see Application Report SLLA197)

•

Fully Specified Over the Extended Industrial

Device Information(1)

Temperature Range

PART NUMBER

PACKAGE

BODY SIZE (NOM)

SOP (8)

9.50 mm × 6.57 mm

AMC1100

2 Applications

SOIC (8)

5.85 mm × 7.50 mm

•

Shunt Resistor Based Current Sensing in:

(1) For all available packages, see the orderable addendum at

the end of the datasheet.

–

Energy Meters

–

Green Energy

–

Power Measurement Applications

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.