ADS131B23
- 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
- Programmable full-scale range:
- 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.
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技術文件
類型 | 標題 | 日期 | ||
---|---|---|---|---|
* | Data sheet | ADS131B23 High-Voltage, Battery-Pack Monitor With SPI and3 ADC Channels for Voltage, Current, and Temperature Sensing datasheet (Rev. A) | PDF | HTML | 2023年 8月 25日 |
Application note | Digital Filter Types in Delta-Sigma ADCs (Rev. A) | PDF | HTML | 2023年 3月 29日 |
設計與開發
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隔離式 ADC
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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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TINA-TI — 基於 SPICE 的類比模擬程式
封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
---|---|---|
HTQFP (PHP) | 48 | Ultra Librarian |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點