Quad, 14-Bit nanoDAC+ with 2 ppm/°C On-Chip Reference and SPI Interface

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Product Details

The AD5685R nanoDAC+TM is a quad, 14-bit, rail-to-rail, voltage output DAC. The device includes a 2.5V, 2ppm/˚C internal reference (enabled by default) and a gain select pin giving a full-scale output of 2.5V (gain=1) or 5V (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 1.5mV offset error performance. The device is available in a 3mm X 3mm LFCSP and a TSSOP package.

The AD5685R also incorporates a power-on-reset circuit and a RSTSEL pin that ensures the DAC outputs power up to zero-scale or midscale, and remain there until a valid write takes place. Each device contains a per-channel power-down feature that reduces the current consumption of the device to 4 uA at 3 V while in power-down mode.

The AD5685R employs a versatile SPI interface that operates at clock rates up to 50 MHz and includes a VLOGIC pin intended for 1.8V/ 3V/ 5V logic.


  1. High Relative Accuracy: AD5685R (14-bit): ±1LSB INL max
  2. Low drift on-chip reference: 2.5V, 2ppm/°C temperature drift
  3. Tiny Package: 3mm × 3mm 16 lead LFCSP or 16 lead TSSOP


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

Product Lifecycle

checked Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits


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EVAL-AD5686R Circuit Diagram

Product Details

The EVAL-AD5686RSDZ evaluation board is designed to help users quickly prototype new AD5686R circuits and reduce design time. The AD5686R operates from a single 2.7 V to 5.5 V supply. The AD5686R incorporates an internal 2.5 V reference to give an output voltage of 2.5 V or 5 V. The evaluation board also incorporates additional voltage references.

Full data on the AD5686R can be found in the data sheet, available from Analog Devices, which should be consulted in conjunction with this user guide when using the evaluation board.

The EVAL-AD5686RSDZ interfaces to the USB port of a PC via an SDP board. Software is supplied with the evaluation board to allow the user to program the AD5686R. A PMOD™ connection is also available for different microcontrollers.

This evaluation board is compatible with any Analog Devices SDP board, which can be purchased separately. For example, a typical connection between the EVAL-AD5686RSDZ and the EVAL-SDP-CS1Z board (SDP-S controller board).

Software & Systems Requirements


Tools & Simulations

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Product Recommendations

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AD5685R Companion parts

Recommended Digital Isolator

  • For a galvanically isolated interface , we recommend the ADUM1400 .

Recommended Voltage/Current Output Driver

  • For PLC and industrial control applications , we recommend the AD5750-2 .

Design Resources

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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

AD5685R Material Declaration
PCN-PDN Information Quality And Reliability Symbols and Footprints



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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

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Evaluation Boards Pricing displayed is based on 1-piece.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.