ADS7957SRHBT

The ADS7957SRHBT is a 10-bit, successive approximation register (SAR) analog-to-digital converter (ADC) from Texas Instruments. It samples at rates up to 1 MSPS and offers 16 single-ended input channels through an internal multiplexer. The device uses a serial peripheral interface (SPI) for data transfer and supports an external reference input.

Key electrical specifications include an analog supply range of 2.7 V to 5.25 V and a digital I/O supply range of 1.7 V to 5.25 V. The ADC has a typical power consumption of 11.5 mW and provides a signal-to-noise ratio of 60 dB. The input voltage range is 0 V to the reference voltage, with the reference mode externally configurable. These characteristics make it suitable for a wide range of precision data acquisition systems.

The device is packaged in a 32-VFQFN exposed pad module, with a supplier device package designation of 32-VQFN (5x5). It is designed for surface mount assembly and operates over a temperature range of -40°C to 125°C. The ADS7957SRHBT is part of the ADS79xx family of pin-compatible ADCs, offering scalability that helps streamline board design across multiple channel and resolution options.

Typical applications include industrial control, sensor monitoring, data acquisition modules, and battery-operated equipment where low power and small footprint are important. The multiplexed channel configuration allows a single ADC to sample from multiple transducers, reducing component count.