ADS131B23-Q1

The ADS131B23-Q1 is a high-precision, 24-bit analog-to-digital converter (ADC) designed for industrial and automotive applications requiring robust performance in harsh environments. It features a sigma-delta architecture that enables low noise, high resolution, and excellent linearity, making it ideal for precision measurement systems. The device supports up to four simultaneous input channels, each with programmable gain amplifiers (PGAs) offering gains from 1 to 128, allowing flexible signal conditioning without external components. This ADC integrates a low-jitter clock generator and supports both internal and external reference inputs, ensuring stable operation across varying conditions. It includes on-chip self-calibration and digital filtering capabilities, which reduce drift and improve long-term accuracy. Communication is handled via a serial interface compatible with SPI, enabling fast data transfer rates up to 10 Mbps. The device also features built-in diagnostics such as sensor fault detection, power-on reset, and watchdog timers, enhancing system reliability. Designed for automotive compliance, the ADS131B23-Q1 meets AEC-Q100 Grade 1 requirements, ensuring robustness under extreme temperature ranges (-40°C to +125°C). Its wide supply voltage range of 2.7 V to 5.5 V makes it suitable for various power domains in vehicle systems. Additionally, it includes a sleep mode with ultra-low quiescent current, supporting energy-efficient designs in battery-powered or low-power applications. Common applications include battery management systems (BMS), engine control units (ECUs), electric vehicle (EV) charging systems, and industrial process control sensors. The chip’s ability to directly interface with resistive bridge sensors, thermocouples, and other low-level signals simplifies system design while maintaining high accuracy. Its integrated features reduce component count, board space, and overall system cost, making it a preferred choice for engineers seeking precision, reliability, and ease of integration in demanding environments.