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類比轉數位轉換器 (ADC)
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ADS131M02

現行

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

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產品規格表

ADS131M02

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 2 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) 1.95 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 2 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) 1.95 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 mm × 6.4 mm) WQFN (RUK) 20 9 mm² (3 mm × 3 mm)
  • 2 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 of 330 kΩ for gains of 1, 2, and 4
    • Input impedance of ≥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
  • 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: 2.3 mW at 3-V AVDD and DVDD
  • Packages: 20-pin TSSOP or 20-pin WQFN
  • Operating temperature range: –40°C to +125°C
  • 2 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 of 330 kΩ for gains of 1, 2, and 4
    • Input impedance of ≥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
  • 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: 2.3 mW at 3-V AVDD and DVDD
  • Packages: 20-pin TSSOP or 20-pin WQFN
  • Operating temperature range: –40°C to +125°C

The ADS131M02 is a two-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 ADS131M02 is a two-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 下載最新的英文版本 日期
* 資料表 ADS131M02 2-Channel, Simultaneously-Sampling, 24-Bit, Delta-Sigma ADC datasheet (Rev. A) PDF | HTML 2021/4/7
應用說明 A Simple, Java-Based CRC Calculator PDF | HTML 2026/3/4
Application brief Electricity Metering Reference Designs Selection Guide PDF | HTML 2026/1/6
應用說明 A Basic Guide to Bridge Measurements (Rev. A) PDF | HTML 2024/3/13
應用說明 Digital Filter Types in Delta-Sigma ADCs (Rev. A) PDF | HTML 2023/3/29
技術文章 How to design an accurate DC power supply PDF | HTML 2021/4/8
Circuit design Circuit for protecting ADS131M0x ADC from electrical overstress PDF | HTML 2021/3/31

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

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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支援軟體

ADS131M08-C-EXAMPLE-CODE — ADS131M08 example C code

Expedite your embedded design using this example C code for the ADS131M08 product family
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模擬型號

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

SBAM423A.IBS (314 KB) - IBIS 模型
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計算工具

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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計算工具

ANALOG-ENGINEER-CALC — PC software analog engineer's calculator

類比工程師的計算機旨在加速類比電路設計工程師定期使用的許多重複計算。此基於 PC 的工具提供圖形介面，列出各種常見計算，從使用回饋電阻器設定運算放大器增益到選擇適當的電路設計元件以穩定類比數位轉換器 (ADC) 驅動緩衝電路。

除了作為獨立工具使用外，此計算機還與類比工程師口袋參考中描述的概念相得益彰。

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參考設計

TIDA-010944 — 單相與分相分流能源量測參考設計

此參考設計使用一個含兩個分流的隔離式與非隔離式獨立多通道類比轉數位轉換器 (ADC)，實作具有中性或分相能源量測子系統的單相。分流感測器與低功率線性 3D 霍爾效應感測器 (TMAG5273) 的組合，可提供安全防護和偵測磁性篡改攻擊。此參考設計可在 4000:1 輸入範圍 (25mA 至 100A) 中達到 0.2 S 級準確度，且取樣率為 4kHz，並使用 TI Arm® Cortex®-M0+ 主機微控制器來計算量測參數。必要的軟體功能實作於 MSPM0-SDK 版本：2.01.00.03 中，並且可透過 Code Composer Studio™ 編譯。
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封裝 針腳 CAD 符號、佔位空間與 3D 模型
TSSOP (PW) 20 Ultra Librarian
WQFN (RUK) 20 Ultra Librarian
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