ADS131B04-Q1

The ADS131B04-Q1 is a high-precision, low-power, 24-bit sigma-delta analog-to-digital converter (ADC) designed for industrial and automotive applications. It features four independent input channels, each capable of supporting differential or single-ended inputs with programmable gain amplifiers (PGAs) offering gains from 1 to 128. This flexibility allows the device to interface directly with a wide range of sensor types, including strain gauges, pressure sensors, and thermocouples, without requiring external signal conditioning. The device operates at a maximum throughput rate of 5 kSPS per channel in continuous conversion mode, enabling accurate measurement of slow-changing signals while maintaining low power consumption—typically less than 2 mW in active mode. Its integrated digital filter supports both sinc3 and sinc4 filtering options, providing excellent noise rejection and minimal group delay, which is critical for precision measurements in noisy environments such as motor control systems or battery management units. Built-in diagnostics include internal self-tests, CRC error detection, and channel monitoring, enhancing system reliability and fault detection. The ADS131B04-Q1 also includes a temperature sensor for thermal monitoring and an on-chip reference voltage, reducing component count and simplifying design. Communication is handled via a flexible serial interface that supports SPI-compatible protocols, allowing seamless integration with microcontrollers or digital signal processors. Designed to meet AEC-Q100 Grade 1 automotive qualification standards, the device is suitable for harsh operating conditions, including extended temperature ranges from –40°C to +125°C. Its robust architecture ensures long-term stability and performance in safety-critical applications such as electric vehicle battery monitoring, industrial process control, and energy metering systems. With its combination of high resolution, low power, built-in diagnostics, and automotive-grade reliability, the ADS131B04-Q1 provides a comprehensive solution for precision data acquisition in demanding environments where accuracy, efficiency, and dependability are paramount.