AD5686:  Quad, 16-Bit nanoDAC+™ with SPI Interface

The AD5686, a member of the nanoDAC+™ family is a low power, quad, 16-bit buffered voltage output DAC. The device includes a gain select pin giving a full-scale output of 0V to V_REF (gain = 1) or 0V to 2V_REF (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 AD5686 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 at that level 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 AD5686 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.

• High Relative Accuracy (INL): ±2 LSB maximum
• Excellent DC Performance
  1. Total unadjusted error: ±0.1% of FSR maximum
  2.Offset error: ±1.5 mV maximum
  3. Gain error: ±0.1% of FSR maximum
  
• Two Package Options: 3 mm × 3 mm, 16-lead LFCSP and 16-lead TSSOP

• Digital gain and offset adjustment
• Programmable attenuators
• Process control (PLC I/O cards)
• Industrial automation
• Data acquisition systems