DAC813

® DAC 813 DAC813 DAC 813 Microprocessor-Compatible 12-BIT DIGITAL-TO-ANALOG CONVERTER FEATURES q ±1/2LSB NONLINEARITY OVER TEMPERATURE q GUARANTEED MONOTONIC OVER TEMPERATURE q LOW POWER: 270mW typ q DIGITAL INTERFACE DOUBLE BUFFERED: 12 AND 8 + 4 BITS q SPECIFIED AT ±12V AND ±15V POWER SUPPLIES q RESET FUNCTION TO BIPOLAR ZERO q 0.3" WIDE DIP AND SO PACKAGES converter with voltage output operational amplifier. Fast current switches and laser-trimmed thin-film resistors provide a highly accurate, fast D/A converter. Digital interfacing is facilitated by a double buffered latch. The input latch consists of one 8-bit byte and one 4-bit nibble to allow interfacing to 8-bit (right justified format) or 16-bit data buses. Input gating logic is designed so that the last nibble or byte to be loaded can be loaded simultaneously with the transfer of data to the D/A latch saving computer instructions. A reset control allows the DAC813 D/A latch to asynchronously reset the D/A output to bipolar zero, a feature useful for power-up reset, recalibration, or for system re-initialization upon system failure. The DAC813 is specified to ±1/2LSB maximum linearity error (J, A grades) and ±1/4LSB (K grade). It is packaged in 28-pin 0.3" wide plastic DIP and 28-lead plastic SOIC DESCRIPTION The DAC813 is a complete monolithic 12-bit digitalto-analog converter with a flexible digital interface. It includes a precision +10V reference, interface control logic, double-buffered latch and a 12-bit D...