The AD5320 is a single, 12-bit buffered voltage out DAC that operates from a single +2.7 V to +5.5 V supply consuming 115 µA at 3 V. Its on-chip precision output amplifier allows rail-to-rail output swing to be achieved. The AD5320 utilizes a versatile three-wire serial interface that operates at clock rates up to 30 MHz and is compatible with standard SPI™,QSPI™, MICROWIRE™and DSP interface standards.The reference for AD5320 is derived from the power supply inputs and thus gives the widest dynamic output range. The part incorporates a power-on reset circuit that ensures that the DAC output powers up to zero volts and remains there until a valid write takes place to the device. The part contains a power-down feature that reduces the current consumption of the device to 200 nA at 5 V and provides software selectable output loads while in power-down mode. The part is put into power-down mode over the serial interface.The low power consumption of this part in normal operation makes it ideally suited to portable, battery-operated equipment. The power consumption is 0.7 mW at 5 V reducing to 1 μW in power-down mode.The AD5320 is one of a family of pin-compatible DACs. The AD5300 is the 8-bit version and the AD5310 is the 10-bit version. The AD5300/AD5310/AD5320 are available in 6-lead SOT-23 packages and 8-lead MSOP packages.PRODUCT HIGHLIGHTSAvailable in 6-lead SOT-23 and 8-lead MicroSOIC packagesLow power, single supply operation from 2.7 V to 5.5 VConsumes 0.35 mW at 3 V and 0.7 mW at 5 VRail-to-Rail output with a slew rate of 1 V/µsReference derived from the power supplyHigh speed serial interface with clock speeds up to 30 MHzPin and Software Compatible with theAD5300(8-Bit) and theAD5310(10-bit)APPLICATIONSPortable battery-powered instrumentsDigital gain and offset adjustmentProgrammable voltage and current sourcesProgrammable attenuators