LTC2672 Digital-to-Analog Converter

ADI's LTC2672 provides the high-performance, low noise, power efficient current needed to simplify a system signal chain for current biasing applications. LTC2672 eliminates the need for users to build and calibrate a discrete driver solution, improving development time and cost while reducing solution size.

The LTC2672-16 is a five-channel, 16-bit current source, digital-to-analog converter (DAC) that provides five high compliance current source outputs with guaranteed 600 mV dropout at 200 mA. There are eight current ranges that are programmable per channel with full-scale outputs of up to 300 mA. The channels can be paralleled to allow either ultrafine adjustments of large currents or combined outputs of up to 1.5 A. A dedicated supply pin is provided for each output channel. Each channel can be operated from 2.1 V to V_CC, and internal switches allow any output to be pulled to the optional negative supply. The LTC2672-16 includes a precision integrated 1.25 V reference (10 ppm/°C maximum) with the option to use an external reference. The serial peripheral interface (SPI) compatible, 3-wire serial interface operates on logic levels as low as 1.71 V and at clock rates as high as 50 MHz.