The LTC®2636 is a family of octal 12-, 10-, and 8-bitvoltage-output DACs with an integrated, high-accuracy,low-drift 10ppm/°C reference in 14-lead DFN and 16-leadMSOP packages. It has a rail-to-rail output buffer and isguaranteed monotonic. The LTC2636-L has a full-scaleoutput of 2.5V, and operates from a single 2.7V to 5.5Vsupply. The LTC2636-H has a full-scale output of 4.096V,and operates from a 4.5V to 5.5V supply. Each DAC canalso operate with an external reference, which sets the DACfull-scale output to the external reference voltage.These DACs communicate via an SPI/MICROWIRE™-compatible3-wire serial interface which operates at clock ratesup to 50MHz. Hardware clear (CLR) and asynchronousDAC update (LDAC) pins are available in the MSOP package.The LTC2636 incorporates a power-on reset circuit.Options are available for reset to zero-scale or reset tomid-scale in internal reference mode, or reset to mid-scalein external reference mode after power-up.