1. Products
  2. D/A Converters (DAC)
  3. Precision D/A Converters
  4. Voltage Output D/A Converters
  5. Multichannel Voltage Output D/A Converters
  6. AD7249

Alternative Parts


Features and Benefits

  • Two 12-Bit CMOS DAC Channels with
  • On-Chip Voltage Reference
    Output Amplifiers
  • Three Selectable Output Ranges per Channel
  • -5 V to + 5 V, 0 V to +5 V, 0 V to +10 V
  • Serial Interface
  • 125 kHz DAC Update Rate
  • Small Size: 16-Lead DIP or SOIC
  • Low Power Dissipation

Product Details

The AD7249 DACPORT® contains a pair of 12-bit, voltage-output, digital-to-analog converters with output amplifiers and Zener voltage reference on a monolithic CMOS chip. No external trims are required to achieve full specified performance.

The output amplifiers are capable of developing +10 V across a 2 k Ω load. The output voltage ranges with single supply operation are 0 V to +5 V or 0 V to +10 V, while an additional bipolar ±5V output range is available with dual supplies. The ranges are selected using the internal gain resistor.

Interfacing to the AD7249 is serial, minimizing pin count and allowing a small package size. Standard control signals allow interfacing to most DSP processors and microcontrollers. The data stream consists of 16 bits, DB15 to DB13 are don't care bits, the 13th bit (DB12) is used as the channel select bit and the remaining 12 bits (DB11 to DB0) contain the data to update the DAC. The 16-bit data word is clocked into the input register on each falling SCLK edge.

The data format is natural binary in both unipolar ranges, while either offset binary or twos complement format may be selected in the bipolar range. A CLR function is provided which sets the output to 0 V in both unipolar ranges and in the twos complement bipolar range, while with offset binary data format, the output is set to -REFIN. This function is useful as a power-on reset as it allows the outputs to be set to a known voltage level.

The AD7249 features a serial interface which allows easy connection to both microcomputers and 16-bit digital signal processors with serial ports. The serial data may be applied at rates up to 2 MHz allowing a DAC update rate of 125 kHz.

The AD7249 is fabricated on linear compatible CMOS (LC2MOS), an advanced, mixed technology process. It is packaged in 16-pin DIP and 16-pin SOIC packages.

DACPORT is a registered trademark of Analog Devices, Inc.

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Tools & Simulations

Precision DAC Error Budget Tool

The Precision DAC Error Budget Tool is a web application that calculates the DC Accuracy of precision DAC signal chains. It shows how the static errors accumulate throughout your signal chain to quickly evaluate the design tradeoffs. Calculations include the DC errors introduced by Voltage References, Operation Amplifiers and Precision DACs.

Precision DAC Error Budget Tool

Design Resources

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.View our quality and reliability program and certifications for more information.

Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
AD7249ANZ Material Declaration Reliability Data 16-Lead PDIP
AD7249ARZ Material Declaration Reliability Data 16-Lead SOIC Wide
AD7249ARZ-REEL Material Declaration Reliability Data 16-Lead SOIC Wide
AD7249BNZ Material Declaration Reliability Data 16-Lead PDIP
AD7249BRZ Material Declaration Reliability Data 16-Lead SOIC Wide
AD7249BRZ-REEL Material Declaration Reliability Data 16-Lead SOIC Wide
AD7249SQ Material Declaration Reliability Data 16-Lead CerDIP
Wafer Fabrication Data

PCN-PDN Information

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Sample & Buy

Ordering FAQs

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Buy Now Pricing

(**) Displayed Buy Now Price and Price Range is based on small quantity orders.


List Pricing

(*)The 1Ku 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. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


Lead Times

Please see the latest communication from our CCO regarding lead times.



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