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AD5791:  1 ppm 20-Bit, ±1 LSB INL, Voltage Output DAC

Product Details

Product Status:Recommended for New Designs

The AD5791 is a single 20-bit, unbuffered voltage-output DAC that operates from a bipolar supply of up to 33 V. The AD5791 accepts a positive reference input in the range 5 V to VDD – 2.5V and a negative reference input in the range VSS + 2.5 V to 0 V. The AD5791 offers a relative accuracy specification of ±1 LSB max, and operation is guaranteed monotonic with a ±1 LSB DNL max specification.

The part uses a versatile 3-wire serial interface that operates at clock rates up to 35 MHz and that is compatible with standard SPI, QSPI™, MICROWIRE™, and DSP interface standards. The part incorporates a power-on reset circuit that ensures the DAC output powers up to 0 V and in a known output impedance state and remains in this state until a valid write to the device takes place. The part provides an output clamp feature that places the output in a defined load state

  • Medical Instrumentation
  • Test and Measurement
  • Industrial Control
  • High end Scientific and Aerospace Instrumentation

Product Highlights

  1. 1 ppm Accuracy.
  2. Wide Power Supply Range up to ±16.5 V.
  3. Operating Temperature Range: −40°C to +125°C.
  4. Low 7.5 nV/√Hz Noise Spectral Density.
  5. Low 0.05 ppm/°C Temperature Drift.


  • 1-ppm Resolution
  • 1-ppm INL
  • 7.5nV/√Hz Noise Spectral Density
  • 0.19 LSB long term linearity stability
  • <0.05 ppm/°C temperature drift
  • 1μs Settling Time
  • 1.4 nV-sec glitch impulse
  • Operating temperature range:
    -40°C to 125°C
  • 20-Lead TSSOP package
  • Wide Power Supply Range up to ±16.5 V
  • 35 MHz Schmitt Triggered Digital Interface
  • 1.8 V compatible digital interface

AD5791-EP Supports defense and aerospace applications (AQEC standard)

  • Download the AD5791-EP Data Sheet (pdf)
  • Military temperature range
    (−55°C to +125°C)
  • Controlled manufacturing baseline
  • One assembly/test site
  • One fabrication site
  • Enhanced product change notification
  • Qualification data available on request
  • V62/12664 DSCC Drawing Number

Functional Block Diagram for AD5791

Video: 1 PPM DAC, the Industry's First True 20-Bit DAC

Additional Evaluation Board Information

If you purchase the evaluation board model of this product, you will also need the System Demonstration Platform (SDP). They are used in conjunction as part of a customer evaluation environment.


Title Content Type File Type
AD5791: 1ppm DAC 20-Bit, ±1LSB INL,Voltage Output DAC Data Sheet (Rev D, 07/2013) (pdf, 413 kB) Data Sheets PDF
CN0191: 20-Bit, Linear, Low Noise, Precision, Bipolar ±10V DC Voltage Source  (pdf, 178 kB) Circuit Note PDF
AD5791: 1PPM DAC, the Industry's First True 20-Bit DAC
The AD5791 represents breakthrough data converter technology that offers unparalleled benefits to system architects and designers of precision electronic equipment. The device boasts true 1ppm Resolution & Accuracy.
Videos HTML
AD5781/AD5791 Quick Start Guide (Wiki Site) User Guides HTML
UG-185: Evaluation Board for a 20-Bit, Serial Input, Voltage Output DAC  (pdf, 707 kB) User Guides PDF
The 20-Bit DAC Is the Easiest Part of a 1-ppm-Accurate Precision Voltage Source
(Analog Dialogue, Volume 44 – April 2010)
Analog Dialogue HTML
Digital to Analog Converters ICs Solutions Bulletin  (pdf) Solutions Bulletins PDF
Industrial ICs
Industrial ICs Solutions Bulletin, Volume 10, Issue 8
Solutions Bulletins HTML
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
AD5791 IBIS Model  (ibs) IBIS Models IBS
AD5780 - Microcontroller No-OS Driver Device Drivers HTML
AD5791 FMC-SDP Interposer & Evaluation Board / Xilinx KC705 Reference Design FPGA HDL HTML
BeMicro FPGA Project for AD5791 with Nios driver FPGA HDL HTML

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

Product Recommendations & Reference Designs

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Companion Products

Suggested Companion Products

Recommended Output Amplifier for the AD5791
  • For high precision, wide bandwidth, R-R output swing, we recommend the AD8675.
  • For high voltage, high slew rates and low noise, we recommend the ADA4898-1.
  • For high precision, low noise, small package, we recommend the ADA4004-1.
Recommended External Reference for the AD5791
  • For a precision, ultralow noise, 5V reference, we recommend the ADR445 or the ADR4550.
  • For a dual reference buffer, we recommend the AD8676.
Recommended Power Solutions
  • For selecting voltage regulator products, use ADIsimPower.

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Price, packaging, availability

AD5791 Model Options
Model Package Pins Temp.
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
AD5791ARUZ Status: Production 20 ld TSSOP 20 Ind Tube, 75 $46.19 $37.86 Y  Material Info PCN Purchase Sample
AD5791BRUZ Status: Production 20 ld TSSOP 20 Ind Tube, 75 $78.79 $64.58 Y  Material Info PCN Purchase Sample
AD5791SRU-EP Status: Production 20 ld TSSOP 20 Ind Tube, 75 $201.30 $165.00 N  Material Info PCN Purchase
Price Table Help

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.

AD5791 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
EVAL-AD5791SDZ Status: Production Evaluation Board $159.00 Yes -

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.

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