AD5689R Datasheet

• 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
• 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
• 50 MHz SPI with readback or daisy chain
• Low glitch: 0.5 nV-sec
• Low power: 3.3 mW at 3 V 
• 2.7 V to 5.5 V power supply
• −40°C to +105°C temperature range
• AEC-Q100 qualified for automotive applications

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

The AD5689R members of the nanoDAC+™ family are low power, dual, 16-bit buffered voltage output digital-to-analog converters (DACs). The devices include 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 devices operate from a single 2.7 V to 5.5 V supply, are guaranteed monotonic by design, and exhibit less than 0.1% FSR gain error and 1.5 mV offset error performance. Both devices are available in a 3 mm × 3 mm LFCSP and a TSSOP package.

The AD5689R also incorporate a power-on reset circuit and a RSTSEL pin that ensure 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 AD5689R use a versatile serial peripheral interface (SPI) that operates at clock rates up to 50 MHz. Both devices contain a V_LOGIC pin that is intended for 1.8 V/3 V/5 V logic.

PRODUCT HIGHLIGHTS

1. High Relative Accuracy (INL).
   AD5689R (16-bit): ±2 LSB maximum
2. Low Drift 2.5 V On-Chip Reference.
   2 ppm/°C typical temperature coefficient
   5 ppm/°C maximum temperature coefficient 
3. Two Package Options.
   3 mm × 3 mm, 16-lead LFCSP
   16-lead TSSOP