TI AMC131M02DFMR

The AMC131M02 is a precision, two-channel, data and power-isolated, simultaneous-sampling, 24-bit, delta-sigma (ΔΣ), analog-to-digital converter (ADC). The AMC131M02 offers wide dynamic range, low power, and energy-measurement-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 AMC131M02 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 lower-voltage parts from damage, making the AMC131M02 an excellent choice for polyphase energy metering applications using shunt current sensors.

• Two 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
• 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

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