1 Features
• Isolated ΔΣ ADC with differential input
• 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
• Low-drift internal voltage reference
• 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)
– 5000-VRMS isolation for 1 minute per UL1577
• Package: 20-pin, wide-body SOIC
• Operating temperature range: –40°C to +125°C

2 Applications
• Electricity meters: Commercial and residential
• Circuit breakers
• EV charging stations
• Battery management systems

3 Description
The AMC131M01 is a precision, single-channel,
data- and power-isolated, 24-bit, delta-sigma (ΔΣ),
analog-to-digital converter (ADC). The AMC131M01
offers wide dynamic range, low power, and energymeasurement-
specific features designed for energy
metering and power metrology 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 AMC131M01 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 0884-17 and UL1577. This isolation barrier
separates parts of the system that operate on different
common-mode voltage levels and protects lowervoltage
parts from damage, making the AMC131M01
an excellent choice for polyphase energy metering
applications using shunt current sensors.