1 Features

• AEC-Q100 qualified for automotive applications:

– Temperature grade 1: –40°C to +125°C, TA

• Three isolated, simultaneous-sampling ΔΣ ADCs

with differential inputs

• Single-supply operation (3.3 V or 5 V) with

integrated DC/DC converter

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

standards

• Programmable data rate up to 64 kSPS

• Programmable gain up to 128

• 4-wire SPI interface with cyclic redundancy check

(CRC)

• Safety-related certifications:

– 7070-VPEAK reinforced isolation per DIN EN

IEC 60747-17 (VDE 0884-17): 2021-10

– 5000-VRMS isolation for 1 minute per UL1577

• Package: 20-pin wide-body SOIC

2 Applications

• Automotive battery management systems (BMS)

• HEV/EV onboard chargers (OBC)

• HEV/EV DC/DC converters

• EV charging stations

3 Description

The AMC131M03-Q1 is a precision three-channel,

isolated, simultaneous-sampling, 24-bit, delta-sigma

(ΔΣ) analog-to-digital converter (ADC). The

AMC131M03-Q1 offers wide dynamic range, low

power, and energy-measurement-specific features,

making the device designed for isolated voltage and

current measurements in automotive applications.

The ADC inputs can be directly interfaced to a

resistor-divider network or a shunt-current sensor

because of the device high input impedance.

The AMC131M03-Q1 features a fully integrated

isolated DC/DC converter that allows single-supply

operation from the low-side of the device. The

reinforced capacitive isolation barrier is certified

according to VDE V 0884-11 and UL1577. This

isolation barrier separates parts of the system that

operate on different common-mode voltage levels and

protects lower-voltage parts from damage, making

the AMC131M03-Q1 an excellent choice for isolated

voltage and current measurements.