The AD53101 is a single， 10-bit， buffered voltage output 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. The AD5310 utilizes a versatile 3-wire serial interface that operates at clock rates of up to 30 MHz and is compatible with standard SPI?， QSPI?， MICROWIRE?， and DSP interface standards. The reference for AD5310 is derived from the power supply inputs and， therefore， provides the widest dynamic output range. The part incorporates a power-on reset circuit that ensures that the DAC output powers up to 0 V and remains there until a valid write takes place to the device. The part contains a power-down feature， which 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 for portable， battery-operated equipment. The power consumption is 0.7 mW at 5 V， reducing to 1 μW in power-down mode.