ADS7142-Q1

The ADS7142-Q1 is a high-precision, low-power analog-to-digital converter (ADC) designed for automotive and industrial applications requiring robust performance in harsh environments. It features a 12-bit resolution with a maximum conversion rate of 500 kSPS, enabling accurate signal acquisition from various sensors. The device supports up to four single-ended or two differential input channels, making it ideal for multi-channel sensing systems such as temperature, pressure, or current monitoring. This ADC integrates a low-noise programmable gain amplifier (PGA) that provides gains from 1x to 128x, allowing it to amplify small sensor signals without introducing significant noise. Its internal voltage reference ensures consistent accuracy across temperature and supply variations, while the integrated self-calibration feature minimizes offset and gain errors over time. The device operates from a 3.3V supply and consumes only 200 µA in active mode, making it suitable for power-sensitive designs. Designed for AEC-Q100 Grade 1 compliance, the ADS7142-Q1 meets stringent automotive reliability standards, including extended temperature operation from –40°C to +125°C. It includes comprehensive diagnostic features such as channel monitoring, internal temperature sensing, and supply voltage detection, enhancing system fault tolerance and safety. The device also offers configurable interrupt outputs and supports both SPI and I2C serial interfaces for flexible integration into microcontroller-based systems. Applications include battery management systems (BMS), electric vehicle (EV) motor control, industrial automation, and medical instrumentation. Its robust design and precision make it well-suited for use in engine control units (ECUs), cabin comfort systems, and other safety-critical automotive functions where reliable data acquisition is essential. The ADS7142-Q1’s ability to operate under electromagnetic interference (EMI)-prone conditions further extends its utility in demanding environments.