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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
Data sheet Order now

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 x 10.3
  • 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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* 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 22 Sep 2023
Design guide Three-Phase Shunt-Based Energy Metrology Reference Design PDF | HTML 04 Feb 2025
Technical article 為更安全的太陽能系統和 EV 充電器提供準確的電流感測 PDF | HTML 17 Apr 2024
Technical article 더 안전한 태양광 에너지 시스템 및 EV 충전기를 위한 정확한 전류 감 지 제공 PDF | HTML 15 Apr 2024
Technical article Delivering accurate current sensing for safer solar energy systems and EV chargers PDF | HTML 10 Apr 2024
Analog Design Journal 절연 ADC 신호 체인 솔루션을 위한 낮은 EMI 설계 PDF | HTML 03 Apr 2024
Analog Design Journal 適用於隔離式 ADC 訊號鏈解決方案的低 EMI 設計 PDF | HTML 13 Feb 2024
Analog Design Journal Low-EMI designs for isolated ADC signal-chain solutions PDF | HTML 12 Jan 2024
Technical article How precision ADCs enable highly accurate metering systems in EV chargers PDF | HTML 05 Jan 2024
Certificate AMC131M03EVM-PDK EU RoHS Declaration of Conformity (DoC) 06 Jan 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.
Supported products & hardware

Supported products & hardware

Products
Precision ADCs
ADS124S06 — 24-bit, 4-kSPS, 6-ch delta-sigma ADC with PGA and voltage reference for precision sensor measurement ADS124S08 — 24-bit, 4-kSPS, 12-ch delta-sigma ADC with PGA and voltage reference for sensor measurement ADS1260 — 24-bit, 40-kSPS, 5-ch delta-sigma ADC with PGA, VREF and IDACs for factory automation ADS1260-Q1 — Automotive 24-bit, 40-kSPS, 5-ch delta-sigma ADC with PGA, VREF and IDACs ADS1261 — 24-bit, 40-kSPS, 10-ch delta-sigma ADC with PGA, VREF, IDACs & AC excitation for factory automation ADS1261-Q1 — Automotive 24-bit, 40-kSPS, 10-ch, delta-sigma ADC with PGA, VREF, IDACs and AC excitation ADS1262 — 32-bit 38-kSPS 10-ch delta-sigma ADC with PGA and voltage reference for factory automation ADS1263 — 32-bit 38-kSPS 10-ch delta-sigma ADC with PGA, VREF and auxiliary ADC for factory automation ADS127L11 — 24-bit, 400-kSPS, delta-sigma ADC with easy-to-drive inputs and wideband or low-latency filters ADS127L21 — 24-bit, 512-kSPS wide-bandwidth delta-sigma ADC with programmable IIR and FIR filters ADS1285 — 32-bit high-resolution two-channel delta-sigma ADC for seismic and geospace exploration ADS131B02-Q1 — Automotive 24-bit, 32-kSPS, two-channel, simultaneous-sampling, delta-sigma ADC ADS131B04-Q1 — Automotive 24-bit, 32-kSPS, four-channel, simultaneous-sampling, delta-sigma ADC ADS131B23 — 3 ADC channel, SPI, high-voltage battery pack monitor for current and voltage sensing ADS131B23-Q1 — Automotive high-voltage battery-pack monitor with three ADC channels for current and voltage sensing ADS131B24-Q1 — Automotive high-voltage battery-pack monitor with four ADC channels for current and voltage sensing ADS131B26-Q1 — Automotive high-voltage battery-pack monitor with six ADC channels for current and voltage sensing ADS131M02 — Two-channel, 24-bit, 64-kSPS, simultaneous-sampling, delta-sigma ADC ADS131M02-Q1 — Automotive, two-channel, 24-bit, 64-kSPS simultaneous-sampling delta-sigma ADC ADS131M03 — Three-channel, 24-bit, 64-kSPS, simultaneous-sampling, delta-sigma ADC ADS131M03-Q1 — Automotive, three-channel, 24-bit, 64-kSPS, simultaneous-sampling, delta-sigma ADC ADS131M04 — Four-channel, 24-bit, 64-kSPS, simultaneous-sampling, delta-sigma ADC ADS131M04-Q1 — Automotive, four-channel, 24-bit, 64-kSPS simultaneous-sampling delta-sigma ADC ADS131M06 — Six-channel, 24-bit, 32-kSPS, simultaneous-sampling, delta-sigma ADC ADS131M06-Q1 — Automotive, six-channel, 24-bit, 32-kSPS simultaneous-sampling delta-sigma ADC ADS131M08 — 24-bit, 32-kSPS, 8-channel, simultaneous-sampling, delta-sigma ADC ADS131M08-Q1 — Automotive, eight-channel, 24-bit, 32-kSPS simultaneous-sampling delta-sigma ADC
Isolated ADCs
AMC131M01 — 24-bit, 32-kSPS, 1-channel, simultaneous-sampling, delta-sigma ADC AMC131M02 — 24-bit, 32-kSPS, 2-channel, simultaneous-sampling, delta-sigma ADC AMC131M03 — Three-channel, simultaneous-sampling 24-bit isolated delta-sigma ADC AMC131M03-Q1 — Automotive, three-channel, simultaneous-sampling 24-bit isolated delta-sigma ADC
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Reference designs

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 (...)
Design guide: PDF
Reference designs

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 (...)
Design guide: PDF
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SOIC (DFM) 20 Ultra Librarian
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