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類比轉數位轉換器 (ADC)
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ADS131B23

現行

適用於電流和電壓感測的 3 ADC 通道、SPI、高電壓電池組監測器

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產品規格表

ADS131B23

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, Pseudo-Differential, Single-ended Multichannel configuration Simultaneous Sampling Rating Catalog Reference mode Internal Input voltage range (max) (V) 2.4 Input voltage range (min) (V) -0.3 Features Comparator, GPIO, Oscillator, PGA, Temp Sensor Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 29 Analog supply voltage (min) (V) 2.9 Analog supply voltage (max) (V) 16 Digital supply (min) (V) 2.9 Digital supply (max) (V) 16
Resolution (Bits) 24 Sample rate (max) (ksps) 64 Number of input channels 3 Interface type SPI Architecture Delta-Sigma Input type Differential, Pseudo-Differential, Single-ended Multichannel configuration Simultaneous Sampling Rating Catalog Reference mode Internal Input voltage range (max) (V) 2.4 Input voltage range (min) (V) -0.3 Features Comparator, GPIO, Oscillator, PGA, Temp Sensor Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 29 Analog supply voltage (min) (V) 2.9 Analog supply voltage (max) (V) 16 Digital supply (min) (V) 2.9 Digital supply (max) (V) 16
HTQFP (PHP) 48 81 mm² (9 mm × 9 mm)
  • Two simultaneous-sampling, 24-bit ADCs (ADC1A, ADC1B) for current-shunt measurements
    • Programmable full-scale range:
      • ±39mV to ±312.5mV
      • Supports a wide range of shunt resistor values and current-measurement ranges
    • Achieve high-accuracy current-shunt measurements with:
      • Offset error: ±1.5µV (max)
      • Gain drift: 20ppm/°C (max)
    • Programmable data rate: 500SPS to 64kSPS
    • Digital overcurrent comparator per ADC with programmable thresholds for fast overcurrent detection
  • One multiplexed, 16-bit ADC (ADC2A) for voltage and temperature measurements:
    • 8 analog inputs
    • Programmable full-scale range:±312.5mV to ±1.25V
    • Channel sequencer
  • Monitoring and diagnostic features to mitigate and detect random hardware faults
  • Supply-voltage range: 2.9V to 16V
  • SPI-compatible interface
  • 9 GPIOs with PWM capability
  • Two simultaneous-sampling, 24-bit ADCs (ADC1A, ADC1B) for current-shunt measurements
    • Programmable full-scale range:
      • ±39mV to ±312.5mV
      • Supports a wide range of shunt resistor values and current-measurement ranges
    • Achieve high-accuracy current-shunt measurements with:
      • Offset error: ±1.5µV (max)
      • Gain drift: 20ppm/°C (max)
    • Programmable data rate: 500SPS to 64kSPS
    • Digital overcurrent comparator per ADC with programmable thresholds for fast overcurrent detection
  • One multiplexed, 16-bit ADC (ADC2A) for voltage and temperature measurements:
    • 8 analog inputs
    • Programmable full-scale range:±312.5mV to ±1.25V
    • Channel sequencer
  • Monitoring and diagnostic features to mitigate and detect random hardware faults
  • Supply-voltage range: 2.9V to 16V
  • SPI-compatible interface
  • 9 GPIOs with PWM capability

The ADS131B23 is a fully integrated, high-voltage, battery-pack monitor for industrial battery management systems (BMS).

The ADS131B23 integrates two simultaneous-sampling, high-precision, 24-bit ADC channels (ADC1A, ADC1B) to redundantly measure battery current with high resolution and accuracy using an external shunt resistor. Two independent digital comparators enable fast overcurrent detection in parallel with the two ADCs.

An additional multiplexed, 16-bit ADC (ADC2A) is available to measure shunt temperature and other voltages in the system, such as battery-pack voltage, using external high-voltage resistor dividers. Shunt temperature is measured using an external temperature sensor, such as a thermistor or an analog output temperature sensor. ADC2A is equipped with a channel sequencer that automatically steps through the configured multiplexer inputs to reduce communication on the SPI.

The device integrates many monitoring and diagnostic features to mitigate and detect random hardware faults to aid in the development of functionally safe BMS.

Internal linear regulators with input ranges up to 16V support powering the device with unregulated DC/DC converters.

The ADS131B23 is offered in a 48-pin HTQFP package and is specified over the automotive temperature range of –40°C to +105°C.

The ADS131B23 is a fully integrated, high-voltage, battery-pack monitor for industrial battery management systems (BMS).

The ADS131B23 integrates two simultaneous-sampling, high-precision, 24-bit ADC channels (ADC1A, ADC1B) to redundantly measure battery current with high resolution and accuracy using an external shunt resistor. Two independent digital comparators enable fast overcurrent detection in parallel with the two ADCs.

An additional multiplexed, 16-bit ADC (ADC2A) is available to measure shunt temperature and other voltages in the system, such as battery-pack voltage, using external high-voltage resistor dividers. Shunt temperature is measured using an external temperature sensor, such as a thermistor or an analog output temperature sensor. ADC2A is equipped with a channel sequencer that automatically steps through the configured multiplexer inputs to reduce communication on the SPI.

The device integrates many monitoring and diagnostic features to mitigate and detect random hardware faults to aid in the development of functionally safe BMS.

Internal linear regulators with input ranges up to 16V support powering the device with unregulated DC/DC converters.

The ADS131B23 is offered in a 48-pin HTQFP package and is specified over the automotive temperature range of –40°C to +105°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 ADS131B23 High-Voltage, Battery-Pack Monitor With SPI and 3 ADC Channels for Voltage, Current, and Temperature Sensing datasheet (Rev. B) PDF | HTML 2025/1/31
Circuit design 來自 +5V 供電電源且用於高電壓資料轉換器的精密、±15V 電 源供應電路 PDF | HTML Download English Version PDF | HTML 2025/12/9
應用說明 Digital Filter Types in Delta-Sigma ADCs (Rev. A) PDF | HTML 2023/3/29

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

ADS131B26Q1EVM-PDK — 適用六 ADC 通道高電壓 SPI 電池組監控器的 ADS131B26 性能展示套件

ADS131B26-Q1 評估模組 (EVM) 性能展示套件 (PDK) 是一款結合 ADS131B26Q1EVM 和精確主機介面 (PHI) 控制器板的完整評估與展示平台。PHI 控制器板可讓 ADS131B26Q1EVM 透過 USB 埠連接電腦，並與設計用於評估 ADS131B26-Q1 的軟體介接。

使用指南: PDF | HTML
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ADS131B2X-C-EXAMPLE-CODE — ADS131B2x example C code

Expedite your ADS131B2x firmware development with this example C code from Texas Instruments
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模擬型號

ADS131B2x IBIS Model

SBAM497.IBS (176 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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HTQFP (PHP) 48 Ultra Librarian
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