The ADS131M03 is a three-channel, simultaneously-sampling, 24-bit, delta-sigma (ΔΣ), analog-to-digital converter (ADC) that offers wide dynamic range, low power, and energy-measurement-specific features, making the device an excellent fit for energy metering, power metrology, and circuit breaker applications. The ADC inputs can be directly interfaced to a resistor-divider network or a power transformer to measure voltage or to a current transformer, shunt, or a Rogowski coil to measure current.
The individual ADC channels can be independently configured depending on the sensor input. A low-noise, programmable gain amplifier (PGA) provides gains ranging from 1 to 128 to amplify low-level signals. Additionally, this device integrates channel-to-channel phase calibration and offset and gain calibration registers to help remove signal-chain errors.
A low-drift, 1.2-V reference is integrated into the device reducing printed circuit board (PCB) area. Optional cyclic redundancy checks (CRCs) on the data input, data output, and register map maintain communication integrity.
The complete analog front-end (AFE) is offered in a 20-pin TSSOP package or a leadless 20-pin WQFN package and is specified over the industrial temperature range of –40°C to +125°C.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | ADS131M03 3-Channel, Simultaneously-Sampling, 24-Bit, Delta-Sigma ADC datasheet (Rev. A) | PDF | HTML | Apr 7, 2021 |
| Application note | A Simple, Java-Based CRC Calculator | PDF | HTML | Mar 4, 2026 | |
| Application brief | Electricity Metering Reference Designs Selection Guide | PDF | HTML | Jan 6, 2026 | |
| Application note | A Basic Guide to Bridge Measurements (Rev. A) | PDF | HTML | Mar 13, 2024 | |
| Application note | Digital Filter Types in Delta-Sigma ADCs (Rev. A) | PDF | HTML | Mar 29, 2023 | |
| Circuit design | Circuit for protecting ADS131M0x ADC from electrical overstress | PDF | HTML | Mar 31, 2021 |
For additional terms or required resources, click any title below to view the detail page where available.
The ADS131M04 evaluation module (EVM) is a platform for evaluating the ADS131M04, which is a low-power, simultaneous-sampling, delta-sigma analog-to-digital converter (ADC).
The ADS131M04EVM kit includes the ADS131M04EVM board and a precision host interface (PHI) controller board that (...)
The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)
This reference design implements a single-phase energy meter using standalone multi-channel analog-to-digital converters (ADC) to sample a shunt current sensor. The combination of the shunt sensor and a ultra-low-power Hall-effect sensor (DRV5032) minimizes the effect and enables the detection of (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| WQFN (RUK) | 20 | Ultra Librarian |
| TSSOP (PW) | 20 | Ultra Librarian |
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
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