The DACx0508 is a pin-compatible family of low-power, eight-channel, buffered voltage-output digital-to-analog converters (DACs) with 16-, 14- and 12-bit resolution. The DACx0508 includes a 2.5 V internal reference and user selectable gain configuration providing full scale output voltages of 1.25 V (gain = ½), 2.5 V (gain = 1) or 5 V (gain = 2). The device operates from a single 2.7 V to 5.5 V supply, is specified monotonic, and provides high linearity of ±1 LSB INL.
Communication to the DACx0508 is performed through a serial interface that supports stand-alone and daisy-chain operation. The optional frame-error checking provides added robustness to the DACx0508 serial interface.
The DACx0508 incorporates a power-on-reset circuit that powers up and maintains the DAC outputs at either zero scale or midscale until a valid code is written to the device.