The AD5426/AD5432/AD54431 are CMOS 8-， 10-， and 12-bit current output digital-to-analog converters （DACs）， respectively. These devices operate from a 2.5 V to 5.5 V power supply， making them suitable for battery-powered applications and many other applications. These DACs use a double buffered， 3-wire serial interface that is compatible with SPI， QSPI?， MICROWIRE， and most DSP interface standards. In addition， a serial data out pin （SDO） allows for daisy-chaining when multiple packages are used. Data readback allows the user to read the contents of the DAC register via the SDO pin. On power-up， the internal shift register and latches are filled with 0s and the DAC outputs are at zero scale. As a result of manufacturing on a CMOS submicron process， the parts offer excellent 4-quadrant multiplication characteristics with large signal multiplying bandwidths of 10 MHz. The applied external reference input voltage， VREF， determines the full-scale output current. An integrated feedback resistor， RFB， provides temperature tracking and full-scale voltage output when combined with an external current to voltage precision amplifier. The AD5426/AD5432/AD5443 DACs are available in small， 10-lead MSOPs. The EV-AD5443/46/53SDZ evaluation board is available for evaluating DAC performance. For more information， see the UG-327 evaluation board user guide.