AD5687 Datasheet

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

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

The AD5687 members of the nanoDAC+™ family are low power, dual, 12-bit, buffered voltage output digital-to-analog converters (DACs). The devices include a gain select pin giving a full-scale output of 2.5 V (gain = 1) or 5 V (gain = 2). The AD5687 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 AD5687 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 AD5687 uses a versatile serial peripheral interface 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).
   AD5687 (12-bit): ±1 LSB maximum
2. Excellent DC Performance.
   Total unadjusted error: ±0.1% of FSR maximum
   Offset error: ±1.5 mV maximum
   Gain error: ±0.1% of FSR maximum
3. Two Package Options.
   3 mm × 3 mm, 16-lead LFCSP or 16-lead TSSOP