2.7-5.5V, 16-Bit DAC Converter in a Sot-23

The AD5662, a member of the nanoDAC family, is a low power, single, 16-bit buffered voltage-out DAC that operates from a single 2.7 V to 5.5 V supply and is guaranteed monotonic by design.

The AD5662 requires an external reference voltage to set the output range of the DAC. The part incorporates a power-on reset circuit that ensures the DAC output powers up to 0 V (AD5662x-1) or to midscale (AD5662x-2), and remains there until a valid write takes place. The part contains a power-down feature that reduces the current consumption of the device to 480 nA at 5 V and provides software-selectable output loads while in power-down mode.

The low power consumption of this part in normal operation makes it ideally suited to portable battery-operated equipment. The power consumption is 0.75 mW at 5 V, going down to 2.4 μW in power-down mode.

The AD5662’s on-chip precision output amplifier allows rail-to-rail output swing to be achieved. For remote sensing applications, the output amplifier’s inverting input is available to the user.

The AD5662 uses a versatile 3-wire serial interface that operates at clock rates up to 30 MHz, and is compatible with standard SPI®, QSPI™, MICROWIRE™, and DSP interface standards.

PRODUCT HIGHLIGHTS

* 16-bit DAC—12-bit accuracy guaranteed.

* Available in 8-lead SOT-23 and 8-lead MSOP packages.

* Low power. Typically consumes 0.42 mW at 3 V and 0.75 mW at 5 V.

* Power-on reset to zero scale or to midscale.

* 10 μs max settling time.

APPLICATIONS

* Process control

* Data acquisition systems

* Portable battery-powered instruments

* Digital gain and offset adjustment

* Programmable voltage and current sources

* Programmable attenuators

* Low power (250 μA @ 5 V) single 16-bit nanoDAC

* 12-bit accuracy guaranteed Tiny 8-lead SOT-23/MSOP package

* Power-down to 480 nA @ 5 V, 100 nA @ 3 V

* Power-on reset to zero scale/midscale

* 2.7 V to 5.5 V power supply

* Guaranteed 16-bit monotonic by design