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ADS131B23

AKTIV

Drei-ADC-Kanal-Hochvolt-SPI-Akkupack-Monitor für die Strom- und Spannungsmessung

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ADS131B23

AKTIV
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Produktdetails

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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Top-Dokumentation Typ Titel Format-Optionen Neueste englische Version herunterladen Datum
* Datenblatt ADS131B23 High-Voltage, Battery-Pack Monitor With SPI and 3 ADC Channels for Voltage, Current, and Temperature Sensing datasheet (Rev. B) PDF | HTML 31.01.2025
Circuit design Precision, ±15V Power Supply Circuit from a +5V Source for High-Voltage Data Converters PDF | HTML 04.12.2025
Anwendungshinweis Digital Filter Types in Delta-Sigma ADCs (Rev. A) PDF | HTML 29.03.2023

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