A/D converter cuts system cost and component count
The 16-bit ADS112C04 delta-sigma analogue-to-digital converter (ADC) from Texas Instruments (TI) is in stock at Mouser Electronics. Drawing currents as low was 315µA, the converter enables reduced system cost and component count in applications that measure small sensor signals, including resistance temperature detectors (RTDs), thermocouples, thermistors, resistive bridge sensors, and medical monitoring systems.
The device features two differential or four single-ended inputs through a flexible input multiplexer (MUX), two programmable excitation current sources, programmable gain amplifier (PGA), a voltage reference, a clock oscillator, and a precision temperature sensor.
It offers two conversion modes — single-shot or continuous — and can perform conversions at data rates up to 2,000 samples-per-second (SPS) with single cycle settling.
At 20 SPS, the device’s digital filter offers simultaneous 50-Hz and 60-Hz rejection for noisy industrial applications.
The ADS112C04 features a Two Wire, I2C-compatible interface that supports I2C bus speeds up to 1 Mbit per second (Mbps), with two address pins that allow selection of 16 different I2C addresses for the device.
The 5.0 mm × 4.40 mm TSSOP device operates from a wide supply range of 2.3V to 5.5V over a temperature range of minus 40 to 125 degrees Celsius.
Also available is the ADS112C04EVM evaluation kit and Delta-Sigma ADC EvaluaTIon Software.
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