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.