Quad 14-Bit DAC+ with 2 ppm/°C Reference, IC Interface

The AD5695R is a low power, quad, 14-bit buffered voltage output DAC. The device includes a 2.5 V, 2 ppm/°C internal reference (enabled by default) and a gain select pin giving a full-scale output of 2.5 V (gain = 1) or 5 V (gain = 2). The device operates from a single 2.7 V to 5.5 V supply, is guaranteed monotonic by design, and exhibits less than 0.1% FSR gain error and 1.5 mV offset error performance. The device is available in a 3 mm × 3 mm LFCSP and a TSSOP package.

The AD5695R also incorporates a power-on reset circuit and a RSTSEL pin that ensures that the DAC outputs power up to zero scale or midscale and remain there until a valid write takes place. Each part contains a per-channel power-down feature that reduces the current consumption of the device to 4 μA at 3 V while in power-down mode.

The AD5695R uses a versatile 2-wire serial interface that operates at clock rates up to 400 kHz, and includes a VLOGIC pin intended for 1.8 V/3 V/5 V logic.

Product Highlights

* High Relative Accuracy (INL).

* AD5696R (16-bit): ±2 LSB maximum.

* AD5695R (14-bit): ±1 LSB maximum.

* AD5694R (12-bit): ±1 LSB maximum.

* Low Drift 2.5 V On-Chip Reference.

* 2 ppm/°C typical temperature coefficient.

* 5 ppm/°C maximum temperature coefficient.

* Two Package Options.

* 3 mm × 3 mm, 16-lead LFCSP.

* 16-lead TSSOP.

Applications

* Optical transceivers

* Base-station power amplifiers

* Process control (PLC I/O cards)

* Industrial automation

* Data acquisition systems

* High relative accuracy (INL): ±2 LSB maximum at 16 bits

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

* Tiny package: 3 mm × 3 mm, 16-lead LFCSP

* Total unadjusted error (TUE): ±0.1% of FSR maximum

* Offset error: ±1.5 mV maximum

* Gain error: ±0.1% of FSR maximum

* High drive capability: 20 mA, 0.5 V from supply rails

* User selectable gain of 1 or 2 (GAIN pin)

* Reset to zero scale or midscale (RSTSEL pin)

* 1.8 V logic compatibility

* Low glitch: 0.5 nV-sec

* 400 kHz I2C-compatible serial interface

* Low power: 3.3 mW at 3 V

* 2.7 V to 5.5 V power supply

* −40°C to +105°C temperature range