Texas Instruments' ADS1219 is a precision 24-bit ADC with all the features needed to implement the most common system monitoring functions, including supply voltage, current, and temperature monitoring. The device has 2 differential or 4 single-ended inputs, implemented through a flexible input MUX, rail-to-rail input buffers, a programmable gain stage, a voltage reference, and an oscillator.
The device includes a buffer that provides a high-impedance source that can be connected directly to the device. The gain stage is located behind the buffer and offers selectable gains of 1 and 4. The device can perform conversions at data rates up to 1000 SPS with a single cycle setup. At 20SPS, digital filters can provide both 50Hz and 60Hz rejection for noisy industrial applications.
The device has a two-wire, I2C-compatible interface and supports I2C bus speeds up to 1Mbps. Sixteen different I2C addresses can be selected for the device through two address pins.
The device is available in a leadless 16-pin WQFN or 16-pin TSSOP package and is specified over the temperature range of –40C to + 125C.
