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AMC131M03

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Three-channel, simultaneous-sampling 24-bit isolated delta-sigma ADC

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Data sheet

AMC131M03

ACTIVE
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Product details

Device type Current sensing, Voltage sensing Sample rate (max) (Msps) 0.064 Rating Catalog CMTI (min) (kV/µs) 0.0001 Number of input channels 3 Architecture Delta-Sigma SNR (dB) 98 Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 53 SFDR (dB) 105 Isolation rating Reinforced Withstand isolation voltage (VISO) (Vrms) 5000 Working isolation voltage (VIOWM) (Vrms) 1200 Transient isolation voltage (VIOTM) (VPK) 7070 Creepage (min) (mm) 8 Clearance (min) (mm) 8
Device type Current sensing, Voltage sensing Sample rate (max) (Msps) 0.064 Rating Catalog CMTI (min) (kV/µs) 0.0001 Number of input channels 3 Architecture Delta-Sigma SNR (dB) 98 Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 53 SFDR (dB) 105 Isolation rating Reinforced Withstand isolation voltage (VISO) (Vrms) 5000 Working isolation voltage (VIOWM) (Vrms) 1200 Transient isolation voltage (VIOTM) (VPK) 7070 Creepage (min) (mm) 8 Clearance (min) (mm) 8
SOIC (DFM) 20 132.149 mm² (12.83 mm × 10.3 mm)
  • Three isolated, simultaneous-sampling ΔΣ ADCs with differential or single-ended 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
  • Internal temperature sensor
  • 4-wire SPI interface with cyclic redundancy check (CRC)
  • Safety-related certifications:
    • 7070-V PEAK reinforced isolation per DIN EN IEC 60747-17 (VDE 0884-17)
    • 5000-V RMS isolation for 1 minute per UL1577
  • Package: 20-pin, wide-body SOIC
  • Operating temperature range: –40°C to +125°C
  • Three isolated, simultaneous-sampling ΔΣ ADCs with differential or single-ended 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
  • Internal temperature sensor
  • 4-wire SPI interface with cyclic redundancy check (CRC)
  • Safety-related certifications:
    • 7070-V PEAK reinforced isolation per DIN EN IEC 60747-17 (VDE 0884-17)
    • 5000-V RMS isolation for 1 minute per UL1577
  • Package: 20-pin, wide-body SOIC
  • Operating temperature range: –40°C to +125°C

The AMC131M03 is a precision, three-channel, data- and power-isolated, simultaneous-sampling, 24-bit, delta-sigma (ΔΣ) analog-to-digital converter (ADC). The AMC131M03 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 AMC131M03 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 AMC131M03 an excellent choice for polyphase energy metering applications using shunt current sensors.

The AMC131M03 is a precision, three-channel, data- and power-isolated, simultaneous-sampling, 24-bit, delta-sigma (ΔΣ) analog-to-digital converter (ADC). The AMC131M03 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 AMC131M03 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 AMC131M03 an excellent choice for polyphase energy metering applications using shunt current sensors.
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Technical documentation

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* Data sheet AMC131M03 3-Channel, 64-kSPS, Simultaneous-Sampling, 24-Bit, Reinforced Isolated Delta-Sigma ADC With Integrated DC/DC Converter datasheet (Rev. B) PDF | HTML Sep 22, 2023
Certificate VDE Certificate for Reinforced Isolation for DIN EN IEC 60747-17 (Rev. AB) Jul 15, 2026
Application brief Electricity Metering Reference Designs Selection Guide PDF | HTML Jan 6, 2026
Application note AMC High Side Power Supply Options PDF | HTML Oct 15, 2025
Circuit design Three-Phase Isolated Voltage-Sensing Circuit Using AMC1350 PDF | HTML Apr 11, 2025
Design guide Three-Phase Shunt-Based Energy Metrology Reference Design (Rev. A) PDF | HTML Mar 7, 2025
E-book An Engineer's Guide to Isolated Signal Chain Solutions PDF | HTML May 23, 2024
Technical article Delivering accurate current sensing for safer solar energy systems and EV chargers PDF | HTML Apr 10, 2024
Analog design Journal Low-EMI designs for isolated ADC signal-chain solutions PDF | HTML Jan 12, 2024
Technical article How precision ADCs enable highly accurate metering systems in EV chargers PDF | HTML Jan 5, 2024
Certificate AMC131M03EVM-PDK EU RoHS Declaration of Conformity (DoC) PDF | HTML Jan 6, 2023

Design & development

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Evaluation board

AMC131M03EVM — AMC131M03 evaluation module for three-channel, simultaneous-sampling 24-bit isolated delta-sigma ADC

The AMC131M03 evaluation module (EVM) performance demonstration kit (PDK) is a platform for evaluating the AMC131M03 using a precision host interface (PHI) controller board. The AMC131M03 is a precision three-channel, isolated, simultaneously-sampling, 24-bit, delta-sigma (ΔΣ) (...)

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Calculation tool

ADC-DESIGN-CALC — Online design calculator tool for TI Precision ADCs

ADC-DESIGN-CALC is an online resource with multiple ADC calculator tools (such as Digital Filter Response, Code-to-Voltage, CMR, CRC, etc.) for TI Precision ADCs.
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Calculation tool

SBAR013 — Isolated Amplifier Voltage Sensing Excel Calculator

This calculator provides estimates of the errors associated with using isolation amplifier devices in a voltage sensing configuration.
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Calculation tool

SBAR020 — Isolated Amplifier Current Sensing Excel Calculator

This calculator provides estimates of the errors associated with using isolation amplifier devices in a current sensing configuration.
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Reference design

TIDA-010244 — Three-phase shunt-based energy metrology reference design

This reference design implements Class 0.2S three-phase energy measurement using an isolated high-performance, multichannel analog-to-digital converter (ADC), which samples shunt current sensors at 4kHz to measure the current and voltage of each leg of the AC mains. The reference design achieves (...)
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Reference design

TIDA-010944 — Single-phase and split-phase shunt energy metrology reference design

This reference design implements a single-phase with neutral or split-phase energy measurement subsystem using one isolated and one non-isolated standalone multichannel analog-to-digital converters (ADCs) with two shunts. The combination of shunt sensors and a low-power linear 3D Hall-effect (...)
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SOIC (DFM) 20 Ultra Librarian
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