DAC161S997RGHT

The DAC161S997RGHT from Texas Instruments is a highly integrated, low-power 16-bit Delta-Sigma digital-to-analog converter (DAC) specifically designed for driving industry-standard 4-20 mA current loops. This special-function DAC utilizes a simple 4-wire SPI interface for data transfer and configuration, making it suitable for compact loop-powered applications.

Key electrical specifications include a 16-bit resolution, a single channel, and a buffered current output. It operates with a supply voltage range of 2.7V to 3.6V and features an external reference type. The device boasts a typical power consumption of 0.33 mW and a very low supply current of 100 µA, allowing additional current for other system components. The operating temperature range is extended industrial, from -40°C to 105°C.

Designed for industrial transmitters, the DAC161S997RGHT includes features such as loop-error detection and reporting, programmable output-current error levels, and simple HART modulator interfacing. It is available in a 16-WQFN (4x4 mm) package with an exposed pad, suitable for surface mounting.

This DAC is ideal for 2- and 4-wire industrial transmitter designs where low power consumption, high integration, and a small footprint are critical. Its architecture is Delta-Sigma, and it supports various serial interfaces including SPI, QSPI, and MICROWIRE.