AD5687R:  Dual, 12-Bit nanoDAC+™ with 2 ppm/°C On-Chip Reference and SPI Interface

The AD5687R nanoDAC+™ is a dual, 12-bit, rail-to-rail, voltage output DACs. 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 AD5687R 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 remains 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 AD5689R employs a versatile SPI interface that operates at clock rates up to 50 MHz, and all devices contain a V_LOGIC pin intended for 1.8 V/3 V/5 V logic supplies.

1. High Relative Accuracy:
   AD5687R (12-bit): ±1 LSB INL max
2. Low Drift On-Chip Reference:
   2.5 V, 2 ppm/°C temperature drift
3. Tiny Package:
   3 mm × 3 mm, 16-lead LFCSP or 16-lead TSSOP

• Optical transceivers
• Base-station power amplifiers
• Process control (PLC I/O cards)
• Industrial automation
• Data acquisition systems