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AD9705:  10-Bit, 175 MSPS TxDAC® Digital-to-Analog Converter

Product Details

The AD9704/AD9705/AD9706/AD9707 are the fourth-generation family in the TxDAC series of high performance, CMOS digital-to-analog converters (DACs). This pin-compatible, 8-/10-/12-/14-bit resolution family is optimized for low power operation, while maintaining excellent dynamic performance. The AD9704/ AD9705/AD9706/AD9707 family is pin-compatible with the AD9748/AD9740/AD9742/AD9744 family of TxDAC convert-ers and is specifically optimized for the transmit signal path of communication systems. All of the devices share the same interface, LFCSP_VQ package, and pinout, providing an upward or downward component selection path based on performance, resolution, and cost. The AD9704/AD9705/ AD9706/AD9707 offers exceptional ac and dc performance, while supporting update rates up to 175 MSPS.

The flexible power supply operating range of 1.7 V to 3.6 V and low power dissipation of the AD9704/AD9705/AD9706/AD9707 parts make them well-suited for portable and low power applications.

Power dissipation of the AD9704/AD9705/AD9706/AD9707 can be reduced to 15 mW, with a small trade-off in performance, by lowering the full-scale current output. In addition, a power-down mode reduces the standby power dissipation to approxi-mately 2.2 mW.

The AD9704/AD9705/AD9706/AD9707 has an optional serial peripheral interface (SPI®) that provides a higher level of program-mability to enhance performance of the DAC. An adjustable output, common-mode feature allows for easy interfacing to other components that require common modes from 0 V to 1.2 V.

Edge-triggered input latches and a 1.0 V temperature-compensated band gap reference have been integrated to provide a complete, monolithic DAC solution. The digital inputs support 1.8 V and 3.3 V CMOS logic families.

Product Highlights

  1. Pin Compatible. The AD9704/AD9705/AD9706/AD9707 line of TxDAC converters is pin-compatible with the AD9748/AD9740/AD9742/AD9744 TxDAC line (LFCSP_VQ package).
  2. Low Power. Complete CMOS DAC operates on a single supply of 3.6 V down to 1.7 V, consuming 50 mW (3.3 V) and 12 mW (1.8 V). The DAC full-scale current can be reduced for lower power operation. Sleep and power-down modes are provided for low power idle periods.
  3. Self-Calibration. Self-calibration enables true 14-bit INL and DNL performance in the AD9707.
  4. Twos Complement/Binary Data Coding Support. Data input supports twos complement or straight binary data coding.
  5. Flexible Clock Input. A selectable high speed, single-ended, and differential CMOS clock input supports 175 MSPS conversion rate.
  6. Device Configuration. Device can be configured through pin strapping, and SPI control offers a higher level of programmability.
  7. Easy Interfacing to Other Components. Adjustable common-mode output allows for easy interfacing to other signal chain components that accept common-mode levels from 0 V to 1.2 V.
  8. On-Chip Voltage Reference. The AD9704/AD9705/AD9706/ AD9707 include a 1.0 V temperature-compensated band gap voltage reference.
  9. Industry-Standard 32-Lead LFCSP_VQ Package.

Data Sheet, Rev. A, 4/07


  • 175 MSPS update rate
  • Low power member of pin-compatible TxDAC product family
  • Low power dissipation
    12 mW @ 80 MSPS, 1.8 V
    50 mW @ 175 MSPS, 3.3 V
  • Wide supply voltage: 1.7 V to 3.6 V
  • SFDR to Nyquist
    AD9707: 84 dBc @ 5 MHz output
    AD9707: 83 dBc @ 10 MHz output
    AD9707: 75 dBc @ 20 MHz output
  • AD9707 NSD @ 10 MHz output, 125 MSPS: −147 dBc/Hz
  • Adjustable full-scale current outputs: 1 mA to 5 mA
  • On-chip 1.0 V reference
  • CMOS-compatible digital interface
  • Common-mode output: adjustable 0 V to 1.2 V
  • Power-down mode < 2 mW @ 3.3 V (SPI controllable) Self-calibration
  • Compact 32-lead LFCSP_VQ, RoHS compliant package

Functional Block Diagram for AD9705

For evaluation of all Analog Devices High Speed DAC components you will need to purchase or loan a Data Pattern Generator. To find out more information please click here.


Title Content Type File Type
AD9704/AD9705/AD9706/AD9707: 8-/10-/12-/14-Bit, 175 MSPS TxDAC Digital-to-Analog Converters Data Sheet (Rev B, 10/2011) (pdf, 2123 kB) Data Sheets PDF
AN-912: Driving a Center-Tapped Transformer with a Balanced Current-Output DAC  (pdf, 246 kB) Application Notes PDF
Converter Makers Kick Performance Up a Notch
(eeProductCenter, 11/16/2005)
Product Reviews HTML
Transmit-Path DACs For Portables Shrink Power Demand While Adding Features
(Electronic Design, 9/15/2005)
Product Reviews HTML
Low-power TxDACs Fit Comm, Industrial, and Portable Apps
(CommsDesign, 7/27/2005)
Product Reviews HTML
Low-Power Transmit-Quality High-Speed DACs  (htm)
(analogZONE, 7/25/2005)
Product Reviews HTM
Fourth-generation High-speed DACs Push Performance Envelope
(RFDesign, 7/1/2005)
Product Reviews HTML
Low-power DACs Target Portables
(EDN, 7/26/2005)
Product Reviews HTML
D/A Converter Cuts Power by 70 Percent
(eeProductCenter, 7/25/2005)
Product Reviews HTML
Digital to Analog Converters ICs Solutions Bulletin  (pdf) Solutions Bulletins PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
DAC Harmonic Analyzer
This tool displays harmonic images and spurs in a DAC output. The user can define a post-DAC analog filter to suppress these images. The effect of this filter is plotted on the graph and shown in the accompanying chart.
DAC Harmonic Analyzer HTML
AD9705 IBIS Model  (ibs) IBIS Models IBS

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.

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Price, packaging, availability

AD9705 Model Options
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.

Model Description Price RoHS View PCN/ PDN Check Inventory/
AD-DAC-FMC-ADP Status: Production FMC to High-Speed DAC Evaluation Board Adaptor $125.00 Yes -
AD9705 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
AD9705-DPG2-EBZ Status: Production Evaluation Board $495.00 Yes -
AD-DAC-FMC-ADP Status: Production FMC to High-Speed DAC Evalution Board Adaptor $125.00 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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