Home Data converters Analog-to-digital converters (ADCs) Precision ADCs
Home
Data converters
Analog-to-digital converters (ADCs)
Precision ADCs

ADS131B23

ACTIVE

3 ADC channel, SPI, high-voltage battery pack monitor for current and voltage sensing

Order now
Data sheet

ADS131B23

ACTIVE
Data sheet Order now

Product details

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 (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 (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 x 9
  • Two simultaneous-sampling, 24-bit ADCs (ADC1A, ADC1B) for current-shunt measurements
    • Programmable full-scale range:
      • ±39 mV to ±312.5 mV
      • Supports a wide range of shunt resistor values and current-measurement ranges
    • Achieve high-accuracy current-shunt measurements with:
      • Offset error: ±1.5 µV (max)
      • Gain drift: 20 ppm/°C (max)
    • Programmable data rate: 500 SPS to 64 kSPS
    • 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: ±312.5 mV to ±1.25 V
    • Channel sequencer
  • Monitoring and diagnostic features to mitigate and detect random hardware faults
  • Supply-voltage range: 2.9 V to 16 V
  • SPI-compatible interface
  • 9 GPIOs with PWM capability
  • Two simultaneous-sampling, 24-bit ADCs (ADC1A, ADC1B) for current-shunt measurements
    • Programmable full-scale range:
      • ±39 mV to ±312.5 mV
      • Supports a wide range of shunt resistor values and current-measurement ranges
    • Achieve high-accuracy current-shunt measurements with:
      • Offset error: ±1.5 µV (max)
      • Gain drift: 20 ppm/°C (max)
    • Programmable data rate: 500 SPS to 64 kSPS
    • 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: ±312.5 mV to ±1.25 V
    • Channel sequencer
  • Monitoring and diagnostic features to mitigate and detect random hardware faults
  • Supply-voltage range: 2.9 V to 16 V
  • 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 16 V 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 16 V 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.
filter Find other Precision ADCs
Download View video with transcript Video

Similar products you might be interested in

open-in-new Compare alternates
Drop-in replacement with upgraded functionality to the compared device
NEW ADS131B26-Q1 ACTIVE Automotive high-voltage battery-pack monitor with six ADC channels for current and voltage sensing Automotive option

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 2
Type Title Date
* Data sheet ADS131B23 High-Voltage, Battery-Pack Monitor With SPI and3 ADC Channels for Voltage, Current, and Temperature Sensing datasheet (Rev. A) PDF | HTML 25 Aug 2023
Application note Digital Filter Types in Delta-Sigma ADCs (Rev. A) PDF | HTML 29 Mar 2023

Design & development

Please view the Design & development section on a desktop.

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos