1 Features

1• ±250-mV input voltage range optimized for shunt

resistors

• Very low nonlinearity: 0.075% max at 5 V

• Low offset error: 1.5 mV max

• Low noise: 3.1 mVRMS typ

• Low high-side supply current:

8 mA max at 5 V

• Input bandwidth: 60 kHz min

• Fixed gain: 8 (0.5% Accuracy)

• High common-mode rejection ratio: 108 dB

• Low-side operation: 3.3 V

• Safety-related certifications:

– 4250-VPK basic isolation per

DIN VDE V 0884-11: 2017-01

– 3005-VRMS isolation for 1 minute per UL1577

– CAN/CSA no. 5A-component acceptance

service notice and DIN EN 61010-1 standard

– Working voltage: 1200 VPEAK

– Transient immunity: 2.5 kV/μs min

• Fully specified over the extended industrial

temperature range

2 Applications

Shunt resistor based current sensing in:

• Electricity meters

• String inverters

• Power measurement applications

3 Description

The AMC1100 is a precision isolation amplifier with

an output separated from the input circuitry by a

silicon dioxide (SiO2) barrier that is highly resistant to

magnetic interference. This barrier is certified to

provide galvanic isolation of up to 4250 VPEAK,

according to DIN VDE V 0884-11: 2017-01 and

UL1577. Used in conjunction with isolated power

supplies, this device prevents noise currents on a

high common-mode voltage line from entering the

local ground and interfering with or damaging

sensitive circuitry.

The AMC1100 input is optimized for direct connection

to shunt resistors or other low voltage level signal

sources. The excellent performance of the device

enables accurate current and voltage measurement

in energy-metering applications. The output signal

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

is available in the SMD-type, wide-body SOIC-8

DWV) and gullwing-8 (DUB) packages.