AMC0100R Precision, ±250mV Input,

Functionally Isolated Amplifier With Single-Ended, Ratiometric Output

1 Features

• Linear input voltage range: ±250mV

• Supply voltage range:

– High-side (VDD1): 3.0V to 5.5V

– Low-side (VDD2): 3.0V to 5.5V

• Single-ended, ratiometric output

– Reference Input: 2.7V to 5.5V

• Low DC errors:

– Offset error: ±0.25mV (maximum)

– Offset drift: ±1µV/°C (maximum)

– Gain error: ±0.25% (maximum)

– Gain drift: ±35ppm/°C (maximum)

– Nonlinearity: 0.04% (maximum)

• High CMTI: 150V/ns (minimum)

• Low EMI: Meets CISPR-11 and CISPR-25

standards

• Functional Isolation:

– 200VRMS, 280VDC working voltage

– 570VRMS, 800VDC transient overvoltage (60s)

• Fully specified over the extended industrial

temperature range: –40°C to +125°C

2 Applications

• 48V motor drives

• 48V frequency inverters

• Analog input modules

• Power supplies

3 Description

The AMC0100R is a precision, galvanically isolated

amplifier with a ±250mV differential input, and single-

ended, ratiometric output. The input is optimized for

direct connection to a shunt resistor or other low-

impedance signal source.

The isolation barrier separates parts of the system

that operate on different common-mode voltage levels

or noise sensitive circuitry from power stages. The

isolation barrier supports a working voltage up to

200VRMS / 280VDC and transient over voltages up to

570VRMS / 800VDC (60s).

The AMC0100R outputs a single-ended signal

proportional to the input voltage. The full-scale output

is set by the voltage applied to the REFIN pin. The

output of the AMC0100R is designed to connect

directly to the input of an ADC. Connect REFIN to

the same reference voltage as the ADC to match the

dynamic input voltage range of the ADC.

The AMC0100R is available in a 8-pin, 0.65mm

pitch VSON package and is fully specified over the

temperature range from –40°C to +125°C.

Package Information

PART NUMBER

PACKAGE(1)

PACKAGE SIZE(2)

AMC0100R

DEN (VSON 8)

3.5mm × 2.7mm

(1)

For more information, see the Mechanical, Packaging, and

Orderable Information.

(2)

The package size (length × width) is a nominal value and

includes pins, where applicable.

GND1

INP

INN

VDD1

I

High-side supply

(3.3V or 5V)

+250mV

0 V

–250mV

OUT

GND2

VDD2

ADC

REFIN

MCU

VDDA

VREFHI

Low-side supply

(3.3 V or 5 V)

ADCIN

VSSA

½ VREFIN

VREFIN

Typical Application

AMC0100R

SBASAS5 – OCTOBER 2025

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.