10-Bit DAC, IC Interface and 2 /°C On-Chip Reference

The AD5310R / AD5311R, members of the nanoDAC® family, are low power, single-channel, 10-bit buffered voltage-out DACs. The devices include an enabled by default internal 2.5 V reference, and provides 2 ppm/°C. The output span can be programmed to be 0 V to VREF or 0 V to 2 × VREF. All devices operate from a single 2.7 V to 5.5 V supply and are guaranteed monotonic by design. The devices are available in 10-lead MSOP packages.

The internal power-on reset circuit of the AD5310R/AD5311R ensures that the DAC register is written to zero scale at powerup when the internal output buffer is configured in normal mode. The devices contain a power-down mode that reduces the current consumption of the device to 2 µA at 5 V.

The AD5310R / AD5311R use a versatile SPI or I2C interface, including an asynchronous RESET pin and a VLOGIC pin, allowing 1.8 V compatibility.

Product Highlights

* High Relative Accuracy (INL):±0.5 LSB maximum.

* Low Drift 2.5 V On-Chip Reference: 5 ppm/°C maximum temperature coefficient.

Applications

* Process controls

* Data acquisition systems

* Digital gain and offset adjustment

* Programmable voltage sources

* Optical modules

* High relative accuracy (INL): ±0.5 LSB maximum

* Low drift 2.5 V reference: 2 ppm/°C typical

* Selectable span output: 2.5 V or 5 V

* Total unadjusted error (TUE): 0.06% of FSR maximum

Offset error: ±1.5 mV maximum

Gain error: ±0.05 % of FSR maximum