ADC offers low-power conversion for small sensor signals

Mouser is now stocking the 16-bit ADS112C04 delta-sigma ADC from Texas Instruments. Drawing currents as low was 315µA, the highly integrated device allows reduced system cost and component count in applications that measure small sensor signals, including RTDs, thermistors, thermocouples, resistive bridge sensors, and medical monitoring systems. The ADC highlights two differential or four single-ended inputs through a flexible input MUX, two programmable excitation current sources, PGA, a voltage reference, a clock oscillator, and a precision temperature sensor. The device offers two conversion modes — single-shot or continuous — and can perform conversions at data rates up to 2,000SPS with single cycle settling. At 20SPS, the device’s digital filter offers simultaneous 50Hz and 60Hz rejection for noisy industrial applications. The device features a Two Wire, I2C-compatible interface that supports I2C bus speeds up to 1Mbps, with two address pins that allow selection of 16 different I2C addresses for the device. The 5mm x 4.4mm TSSOP device operates from a wide supply range of 2.3V to 5.5V over a temperature range of -40C to 125C. The ADC is supported by the ADS112C04EVM evaluation and Delta-Sigma ADC EvaluaTIon Software, which assist engineers to reduce prototype development time and take products to market faster.