Analog Devices Introduces D/A Converter AD5641

The AD5641, a member of the nanoDAC^TM family, is a single, 14-bit buffered voltage out DAC that operates from a single +2.7 V to +5.5 V supply consuming <100 µA at 5 V and is available in a tiny SC70 package. Its on-chip precision output amplifier allows rail-to-rail output swing to be achieved. The AD5641 utilizes a versatile 3-wire serial interface that operates at clock rates up to 30 MHz and is compatible with SPI®, QSPI^TM, MICROWIRE^TM, and DSP interface standards.

The reference for AD5641 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 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 that reduces the current consumption of the device to <100 nA at 3 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 combination of small package and low power makes this device ideal for level setting requirements such as generating bias or control voltages in space constrained and power sensitive applications.