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類比轉數位轉換器 (ADC)
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ADS131M03

現行

三通道 24 位元、64-kSPS、同時取樣、delta-sigma ADC

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產品規格表

ADS131M03

現行
產品規格表 立即訂購

產品詳細資料

Resolution (Bits) 24 Sample rate (max) (ksps) 64 Number of input channels 3 Interface type SPI Architecture Delta-Sigma Input type Differential, Single-ended Multichannel configuration Simultaneous Sampling Rating Catalog Reference mode Internal Input voltage range (max) (V) 3.6 Input voltage range (min) (V) -1.3 Features PGA, Small Size Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 2.7 Analog supply voltage (min) (V) 2.7 Analog supply voltage (max) (V) 3.6 SNR (dB) 100 Digital supply (min) (V) 1.65 Digital supply (max) (V) 3.6
Resolution (Bits) 24 Sample rate (max) (ksps) 64 Number of input channels 3 Interface type SPI Architecture Delta-Sigma Input type Differential, Single-ended Multichannel configuration Simultaneous Sampling Rating Catalog Reference mode Internal Input voltage range (max) (V) 3.6 Input voltage range (min) (V) -1.3 Features PGA, Small Size Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 2.7 Analog supply voltage (min) (V) 2.7 Analog supply voltage (max) (V) 3.6 SNR (dB) 100 Digital supply (min) (V) 1.65 Digital supply (max) (V) 3.6
TSSOP (PW) 20 41.6 mm² 6.5 x 6.4 WQFN (RUK) 20 9 mm² 3 x 3
  • 3 simultaneously sampling differential inputs
  • Programmable data rate up to 64 kSPS
  • Programmable gain up to 128
  • Noise performance:
    • 102-dB dynamic range at gain = 1, 4 kSPS
    • 80-dB dynamic range at gain = 64, 4 kSPS
  • Total harmonic distortion: –100 dB
  • High-impedance inputs for direct sensor connection:
    • Input impedance 330-kΩ for gains of 1, 2, and 4
    • Input impedance ≥ 1-MΩ for gains of 8, 16, 32, 64, and 128
  • Programmable channel-to-channel phase delay calibration:
    • 244-ns resolution, 8.192-MHz fCLKIN
  • Current-detect mode allows for extremely low power tamper detection
  • Fast startup: first data within 0.5 ms of supply ramp
  • Integrated negative charge pump allows input signals below ground
  • Crosstalk between channels: –120 dB
  • Low-drift internal voltage reference
  • Cyclic redundancy check (CRC) on communications and register map
  • 2.7-V to 3.6-V analog and digital supplies
  • Low power consumption: 3.6 mW at 3-V AVDD and DVDD
  • Packages:
    • 20-pin TSSOP or 20-pin WQFN
  • Operating temperature range: –40°C to +125°C
  • 3 simultaneously sampling differential inputs
  • Programmable data rate up to 64 kSPS
  • Programmable gain up to 128
  • Noise performance:
    • 102-dB dynamic range at gain = 1, 4 kSPS
    • 80-dB dynamic range at gain = 64, 4 kSPS
  • Total harmonic distortion: –100 dB
  • High-impedance inputs for direct sensor connection:
    • Input impedance 330-kΩ for gains of 1, 2, and 4
    • Input impedance ≥ 1-MΩ for gains of 8, 16, 32, 64, and 128
  • Programmable channel-to-channel phase delay calibration:
    • 244-ns resolution, 8.192-MHz fCLKIN
  • Current-detect mode allows for extremely low power tamper detection
  • Fast startup: first data within 0.5 ms of supply ramp
  • Integrated negative charge pump allows input signals below ground
  • Crosstalk between channels: –120 dB
  • Low-drift internal voltage reference
  • Cyclic redundancy check (CRC) on communications and register map
  • 2.7-V to 3.6-V analog and digital supplies
  • Low power consumption: 3.6 mW at 3-V AVDD and DVDD
  • Packages:
    • 20-pin TSSOP or 20-pin WQFN
  • Operating temperature range: –40°C to +125°C

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.

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.
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重要文件 類型 標題 格式選項 日期
* Data sheet ADS131M03 3-Channel, Simultaneously-Sampling, 24-Bit, Delta-Sigma ADC datasheet (Rev. A) PDF | HTML 2021年 4月 7日
Application brief Electricity Metering Reference Designs Selection Guide PDF | HTML 2026年 1月 6日
Application note A Basic Guide to Bridge Measurements (Rev. A) PDF | HTML 2024年 3月 13日
Application note Digital Filter Types in Delta-Sigma ADCs (Rev. A) PDF | HTML 2023年 3月 29日
Circuit design Circuit for protecting ADS131M0x ADC from electrical overstress PDF | HTML 2021年 3月 31日

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開發板

ADS131M04EVM — 車用、四通道 24 位元、64-kSPS、同時取樣、delta-sigma ADC

ADS131M04 評估模組 (EVM) 是用於評估 ADS131M04 的平台，ADS131M04 是一款低功率、同時取樣、ΔΣ 類比轉數位轉換器 (ADC)。

ADS131M04EVM 套件包含 ADS131M04EVM 電路板和可啟用隨附電腦軟體的精密主機介面 (PHI) 控制器電路板。

使用指南: PDF
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模擬型號

ADS131M02/03/04 IBIS model (Rev. A)

SBAM423A.IBS (314 KB) - IBIS Model
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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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ANALOG-ENGINEER-CALC — PC software analog engineer's calculator

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 (...)

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PSpice for TI 設計和模擬環境可讓您使用其內建函式庫來模擬複雜的混合訊號設計。在進行佈局和製造之前，建立完整的終端設備設計和解決方案原型，進而縮短上市時間並降低開發成本。 

在 PSpice for TI 設計與模擬工具中，您可以搜尋 TI (...)
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模擬工具

TINA-TI — 基於 SPICE 的類比模擬程式

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
使用指南: PDF
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參考設計

TIDA-010940 — 單相位分流電表參考設計

此參考設計使用獨立多通道類比轉數位轉換器 (ADC) 實作單相位電表，以對分流電流感測器取樣。分流感測器與超低功耗霍爾效應感測器 (DRV5032) 的組合可將影響降到最低，並可偵測磁性篡改攻擊。此參考設計可在 4000:1 輸入範圍 (25mA–100A) 中達到 0.5S 級準確度，且取樣率為 8kHz，並且使用 TI Arm® Cortex®-M0+ 主機微控制器來計算計量參數。必要的軟體功能實作於 MSPM0-SDK 版本：2.02.00.05 中，並且可透過 Code Composer Studio™ 編譯。
Design guide: PDF
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TSSOP (PW) 20 Ultra Librarian
WQFN (RUK) 20 Ultra Librarian
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