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AD9852:  CMOS 300 MSPS Complete DDS

Product Details

The AD9852 digital synthesizer is a highly integrated device that uses advanced DDS technology, coupled with an internal high speed, high performance D/A converter to form a digitally programmable, agile synthesizer function. When referenced to an accurate clock source, the AD9852 generates a highly stable frequency-, phase-, and amplitude-programmable cosine output that can be used as an agile LO in communications, radar, and many other applications. The innovative high speed DDS core of the AD9852 provides 48-bit frequency resolution (1 μHz tuning resolution with 300 MHz SYSCLK). Maintaining 17 bits ensures excellent SFDR.

The circuit architecture of the AD9852 allows the generation of output signals at frequencies up to 150 MHz, which can be digitally tuned at a rate of up to 100 million new frequencies per second. The (externally filtered) cosine wave output can be converted to a square wave by the internal comparator for agile clock generator applications. The device provides two 14-bit phase registers and a single pin for BPSK operation.

For higher-order PSK operation, the I/O interface can be used for phase changes. The 12-bit cosine DAC, coupled with the innovative DDS architecture, provides excellent wideband and narrow-band output SFDR. When configured with the comparator, the 12-bit control DAC facilitates static duty cycle control in the high speed clock generator applications.

The 12-bit digital multiplier permits programmable amplitude modulation, on/off output shaped keying, and precise amplitude control of the cosine DAC output. Chirp functionality is also included for wide bandwidth frequency sweeping applications. The AD9852 programmable 4× to 20× REFCLK multiplier circuit internally generates the 300 MHz system clock from a lower frequency external reference clock. This saves the user the expense and difficulty of implementing a 300 MHz system clock source.

Direct 300 MHz clocking is also accommodated with either single-ended or differential inputs. Single-pin, conventional FSK and the enhanced spectral qualities of ramped FSK are supported. The AD9852 uses advanced 0.35 μ CMOS technology to provide this high level of functionality on a single 3.3 V supply.

The AD9852 is pin-for-pin compatible with the AD9854 single-tone synthesizer. The AD9852 is specified to operate over the extended industrial temperature range of −40°C to +85°C.


  • Agile LO frequency synthesis
  • Programmable clock generator
  • FM chirp source for radar and scanning systems
  • Test and measurement equipment
  • Commercial and amateur RF exciter
  • Data Sheet, Rev. E, 5/07


    • 300 MHz internal clock rate
    • FSK, BPSK, PSK, chirp, AM operation
    • Dual integrated 12-bit D/A converters
    • Ultrahigh speed comparator, 3 ps rms jitter
    • Excellent dynamic performance
      80 dB SFDR at 100 MHz (±1 MHz) AOUT
    • 4× to 20× programmable reference clock multiplier
    • Dual 48-bit programmable frequency registers
    • Dual 14-bit programmable phase offset registers
    • 12-bit programmable amplitude modulation and on/off output shaped keying function
    • Single-pin FSK and BPSK data interfaces
    • PSK capability via I/O interface
    • Linear or nonlinear FM chirp functions with single pin frequency hold function

    Functional Block Diagram for AD9852


    Title Content Type File Type
    AD9852: CMOS 300 MSPS Complete DDS Data Sheet  (Rev E, 05/2007) (pdf, 1375 kB) Data Sheets PDF
    AN-953: Direct Digital Synthesis (DDS) with a Programmable Modulus  (pdf, 112 kB) Application Notes PDF
    AN-939: Super-Nyquist Operation of the AD9912 Yields a High RF Output Signal  (pdf, 221 kB) Application Notes PDF
    AN-927: Determining if a Spur is Related to the DDS/DAC or to Some Other Source (For Example, Switching Supplies)  (pdf, 170 kB) Application Notes PDF
    AN-843: Measuring a Loudspeaker Impedance Profile Using the AD5933 (Rev. A, 6/07)  (pdf, 284 kB) Application Notes PDF
    AN-837: DDS-Based Clock Jitter Performance vs. DAC Reconstruction Filter Performance  (pdf, 313 kB) Application Notes PDF
    AN-772: A Design and Manufacturing Guide for the Lead Frame Chip Scale Package (LFCSP)  (pdf, 439 kB) Application Notes PDF
    AN-769: Generating Multiple Clock Outputs from the AD9540  (pdf, 0) Application Notes PDF
    AN-823: Direct Digital Synthesizers in Clocking Applications Time  (pdf, 115 kB)
    Jitter in Direct Digital Synthesizer-Based Clocking Systems
    Application Notes PDF
    AN-851: A WiMax Double Downconversion IF Sampling Receiver Design  (pdf, 262 kB) Application Notes PDF
    AN-847: Measuring a Grounded Impedance Profile Using the AD5933  (pdf, 294 kB) Application Notes PDF
    AN-345: Grounding for Low-and-High-Frequency Circuits  (pdf, 455 kB)
    Know Your Ground and Signal Paths for Effective Designs. Current Flow Seeks Path of Least Impedance-Not Just Resistance....
    Application Notes PDF
    AN-605: Synchronizing Multiple AD9852 DDS-Based Synthesizers  (pdf, 527 kB) Application Notes PDF
    AN-632: Provisionary Data Rates Using the AD9951 DDS as an Agile Reference Clock for the ADN2812 Continuous-Rate CDR  (pdf, 138 kB) Application Notes PDF
    AN-621: Programming the AD9832/AD9835  (pdf, 202 kB)
    This application note details how to program 5 MHz on the output of the AD9832/AD9835 parts. The frequency register,defer register,and command sequence are explained in detail.
    Application Notes PDF
    AN-342: Analog Signal-Handling for High Speed and Accuracy.  (pdf, 468 kB)
    Signal handling techniques for optimizing DAC and ADC performance.
    Application Notes PDF
    AN-280: Mixed Signal Circuit Technologies  (pdf, 2101 kB)
    Considers problems which arise when reality (& Murphy) intervene in a design which otherwise seems satisfactory in terms of theory and modeling.
    Application Notes PDF
    AN-557: An Experimenter's Project:  (pdf, 368 kB)
    Incorporating the AD9850 Complete DDS Device as a Digital LO Function in an Amateur Radio Transceiver
    Application Notes PDF
    AN-419: A Discrete, Low Phase Noise, 125 MHz Crystal Oscillator for the AD9850  (pdf, 101 kB) Application Notes PDF
    AN-237: Choosing DACs for Direct Digital Synthesis  (pdf, 1156 kB) Application Notes PDF
    AN-423: Amplitude Modulation of the AD9850 Direct Digital Synthesizer  (pdf, 37 kB) Application Notes PDF
    AN-587: Synchronizing Multiple AD9850/AD9851 DDS-Based Synthesizers  (pdf, 116 kB) Application Notes PDF
    AN-543: High Quality, All-Digital RF Frequency Modulation Generation with the ADSP-2181 and the AD9850 DDS  (pdf, 49 kB) Application Notes PDF
    A Technical Tutorial on Digital Signal Synthesis  (pdf, 901 kB)
    Copyright © 1999 Analog Devices, Inc.
    Design Handbooks PDF
    Fundamentals of Frequency Synthesis, Part 2: Direct Digital Synthesis (DDS)
    This month we conclude our two-part series on frequency synthesis, with an introduction to Direct Digital Synthesis. We will give a basic review of how a direct digital synthesis system works, touching on the inner workings of the DDS engine at a relatively high level. We will also discuss the tradeoffs between PLL and DDS technology as a base choice for frequency synthesis needs.
    Webcasts WEBCAST
    Performance Clocks: Demystifying Jitter
    Join us as we delve into the realm of sub-picosecond jitter clocks. The relationship between jitter and phase noise will be explored in detail and methods for measuring sub-picosecond jitter and ultra low phase noise will be presented and discussed.
    Webcasts WEBCAST
    Speedy A/Ds Demand Stable Clocks
    by Jeff Keip, Analog Devices, Inc. (EE Times, 3/18/04)
    Technical Articles HTML
    Improved DDS Devices Enable Advanced Comm Systems
    by Valoree Young, Analog Devices
    (Electronic Products, September 2006)
    Technical Articles HTML
    ADI Buys Korean Mobile TV Chip Maker
    (EE Times, 6/7/2006)
    Technical Articles HTML
    DDS Device Provides Amplitude Modulation
    by Mary McCarthy, Analog Devices, Inc.
    (EDN, September 2, 1999)
    Technical Articles HTML
    Introducing Digital Up/Down Converters: VersaCOMM™ Reconfigurable Digital Converters  (pdf, 63 kB)
    Revolutionize your radio architectures
    Technical Articles PDF
    Digital Up/Down Converters: VersaCOMM™ White Paper  (pdf, 97 kB) Technical Articles PDF
    Basics of Designing a Digital Radio Receiver (Radio 101)  (pdf, 77 kB) Technical Articles PDF
    Synchronized Synthesizers Aid Multichannel Systems
    by David Brandon and John Kornblum, Analog Devices, Inc. (Microwaves & RF, 9/2005)
    Technical Articles HTML
    The Year of the Waveform Generator
    (Test & Measurement World, 12/1/2005)
    Technical Articles HTML
    DDS Applications
    by Eva Murphy and Colm Slattery, Analog Devices, Inc. (EETimes, 9/26/2005)
    Technical Articles HTML
    DDS IC Initiates Synchronized Signals
    (Microwaves & RF Cover Story, July 2005)
    Technical Articles HTML
    DDS Simplifies Polar Modulation
    By Ken Gentile, Analog Devices ... Basic modulation mathematics and DDS (direct digital synthesis) provide designers with an all-digital technique for generating polar-encoded carrier signals. (EDN, 8/5/2004)
    Technical Articles HTML
    Digital Waveform Generator Provides Flexible Frequency Tuning for Sensor Measurement
    by Colm Slattery, Analog Devices (EDN, 12/17/2004)
    Technical Articles HTML
    Two DDS ICs Implement Amplitude-shift Keying
    by Noel McNamara, Analog Devices, Inc. (EDN Design Idea, 12/25/2003)
    Technical Articles HTML
    Integrated DDS Chip Takes Steps To 2.7 GHz
    This highly integrated 2.7-GHz source includes all essential DDS circuitry along with a clock driver, divider, high-resolution DAC, and combination phase detector/charge pump. (ED Online, April 2004)
    Technical Articles HTML
    Simple Circuit Controls Stepper Motors
    by Noel McNamara, Analog Devices, Inc. (EDN Design Idea, 1/8/04)
    Technical Articles HTML
    DDS Circuit Generates Precise PWM Waveforms
    by Colm Slattery, Analog Devices, Inc. (EDN, 10/2/2003)
    Technical Articles HTML
    DDS IC Plus Frequency-To-Voltage Converter Make Low-Cost DAC
    by Noel McNamara, Analog Devices, Inc. (EDN Design Idea, 2/5/2004)
    Technical Articles HTML
    Digital Potentiometers Vary Amplitude In DDS Devices  (PDF)
    (Electronic Design, Ideas for Design, 5/29/2000)
    Technical Articles PDF
    DDS Device Produces Sawtooth Waveform
    Ramp or sawtooth waveforms are useful for a broad range of applications, including automatic-test equipment, benchtest equipment, and actuator control. (EDN Design Idea, 7/10/2003)
    Technical Articles HTML
    400-MSample DDSs Run On Only +1.8 VDC
    ... This line of highly integrated DDS ICs features on-board RAM and crystal-oscillator circuitry to simplify the generation of agile and exotic waveforms. (Microwaves & RF Cover Story, 12/2002)
    Technical Articles HTML
    AD9858: Flexible Integrated Synthesizer For Wireless  (htm)
    ... The most important feature of the AD9858 is its ability to change frequency in less than 5 ns, meaning that there is virtually no application left where you will need to go the expense of switching between two separate synthesizers. (AnalogZone, RF/IF Zone Products for the Week of 9/23/2002)
    Technical Articles HTM
    DDS Tackles BaseStations Head On
    ... This High-Performance, Low-Power Integrated Hybrid Synthesizer Flaunts A 10-b Digital-To-Analog Converter That Operates At Up To 1 GSample/s.
    (Wireless Systems Design, September 2002)
    Technical Articles HTML
    Video Portables and Cameras Get HDMI Outputs
    By Doug Bartow, Analog Devices, Inc.
    Technical Articles HTML
    Clock Requirements For Data Converters
    (Electronic Design, 2/2005)
    Technical Articles HTML
    DDS Design
    By David Brandon, Analog Devices, Inc.
    Direct digital synthesizers are known for their highly accurate digital tuning, low noise figure, and phase-continuous frequency-hopping capabilities, which make them more attractive than alternative analog frequency-synthesis solutions.
    (EDN, 5/13/2004)
    Technical Articles HTML
    Ask The Application Engineer—33: All About Direct Digital Synthesis
    (Analog Dialogue, Vol. 38, August 2004)
    Analog Dialogue HTML
    Single-Sideband Upconversion of Quadrature DDS Signals to the 800-to-2500-MHz Band
    (Analog Dialogue, Vol. 34, No. 3, May, 2000)
    Analog Dialogue HTML
    Free Direct Digital Synthesis IC Evaluation Tool
    (Control Engineering, 9/14/2006)
    Product Reviews HTML
    On-Line Evaluation Tool Simplifies Implementing DDS Semiconductors
    (eeProductCenter, 8/16/2006)
    Product Reviews HTML
    RF Source Booklet  (PDF, 4353 kB)
    RF IC Product Overview - Version P (02/2014)
    Overview PDF
    My evaluation board is not working; the software is reporting a USB Communication Error. I verified that the evaluation board is connected to the PC and powered. What else can I check? FAQs/RAQs HTML
    Are there any specific recommendations for material in the vias of the circuit board for the thermally enhanced package styles in which some ADI DDS' are available? FAQs/RAQs HTML
    I have limited experience working with thermally enhanced packages. Where can I get information concerning the proper techniques for soldering and assembly? FAQs/RAQs HTML
    I need to operate my DDS part above the rated temperature range. Can you give me any reliability data? FAQs/RAQs HTML
    Are any of your DDS products space qualified? FAQs/RAQs HTML
    Why did the model numbers change on the AD9852 and AD9854 products? I thought they were available in the ASQ package. FAQs/RAQs HTML
    If the port has a differential REF CLK, and I want to use a single-ended clock, what do I do with the other differential input? FAQs/RAQs HTML
    If I violate the proper logic level of the REF CLK (that is, underdrive or overdrive it), what can I expect? FAQs/RAQs HTML
    What type of signal source is recommended? FAQs/RAQs HTML
    Why does spectral performance degrade when using larger values of multiplication on the clock multiplier? FAQs/RAQs HTML
    Can the DDS evaluation boards be integrated directly into a system project? FAQs/RAQs HTML
    I am having problems getting my evaluation software to see my evaluation board; what should I do to correct the problem? FAQs/RAQs HTML
    Is all DDS software supplied by Analog Devices compatible with all WinXX versions? FAQs/RAQs HTML
    What is the proper termination for the DAC outputs for the DDS products? FAQs/RAQs HTML
    Why can't I see a signal at the output of my DDS when it is unterminated? (I'm setting everything correctly, but I'm just probing the output pins of the DDS which have nothing connected to them.) FAQs/RAQs HTML
    How can I synchronize multiple DDS parts? FAQs/RAQs HTML
    Can I gate the REF CLK on and off? FAQs/RAQs HTML
    What kind of problems can I expect from exceeding the maximum clock rate? (power dissipation, spectral problems) FAQs/RAQs HTML
    What is the effect of REF CLK jitter on the DDS? FAQs/RAQs HTML
    What are the proper logic input levels for the DDS parts? FAQs/RAQs HTML
    What are the advantages and disadvantages of serial and parallel mode? FAQs/RAQs HTML
    Can I read back data at the same rate that I can write the data to the DDS device? FAQs/RAQs HTML
    What logic families can interface with our parts? FAQs/RAQs HTML
    What is the maximum speed I can write to the part? FAQs/RAQs HTML
    I would like to update the FTW of my DDS, but only a single byte of the FTW needs to change. Can the frequency tuning word of a DDS be partially updated a byte at a time? FAQs/RAQs HTML
    What layout recommendations do you have for the power supply pins of the DDS device? FAQs/RAQs HTML
    What is the effect of increasing my supply voltage beyond the nominal recommended value? FAQs/RAQs HTML
    I have limited power to supply to the part. What can I do to reduce the power consumption of the device and thus ensure that my supply is adequate? FAQs/RAQs HTML
    Do you recommend a linear or switching power supply? FAQs/RAQs HTML
    Should I separate digital and analog ground planes on my evaluation board? FAQs/RAQs HTML
    Can I use the same power supply for AVDD and DVDD? FAQs/RAQs HTML
    What is the ratio between the analog and digital currents drawn by the DDS devices? FAQs/RAQs HTML
    I'm not using all the blocks of the AD9858. What do I do with the unused inputs of these sections? FAQs/RAQs HTML
    What causes a Quadrature Digital Upconverter (AD9856, AD9857) to go into a CIC overflow condition? FAQs/RAQs HTML
    How do I use a DDS for a clock driver? FAQs/RAQs HTML
    How do I perform amplitude modulation on the output? FAQs/RAQs HTML
    How can I control the envelope of the output? FAQs/RAQs HTML
    How do I change the phase of my output signal? FAQs/RAQs HTML
    Are frequency changes of a DDS phase coherent? FAQs/RAQs HTML
    What type of frequency sweeping is available? FAQs/RAQs HTML
    What type of automatic frequency sweeping modes does each of your DDS parts support? FAQs/RAQs HTML
    Does Analog Devices offer a list of manufacturers of oscillators for DDS devices? FAQs/RAQs HTML
    Where can I find some good background material on direct digital synthesis? FAQs/RAQs HTML
    Do you have a DDS overview? FAQs/RAQs HTML
    RAQs index Rarely Asked Questions HTML
    Glossary of EE Terms Glossary HTML

    Design Tools,Models,Drivers & Software

    Title Content Type File Type
    The purpose of this tool is to assist a user in selecting and evaluating Analog Devices, Direct Digital Synthesis (DDS) IC's. It allows a user to select a device, enter the desired operating conditions and evaluate it's general performance.
    ADIsim Design/Simulation Tools HTML
    AD9852 IBIS Models IBIS Models 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.

    SampleSample & Buy

    Price, packaging, availability

    AD9852 Model Options
    Model Package Pins Temp.
    Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
    AD9852AST Status: Obsolete 80 ld LQFP (14x14mm) 80 Ind Tray, 90 - - N  Material Info Notify Me Contact ADI
    AD9852ASTZ Status: Production 80 ld LQFP (14x14mm) 80 Ind Tray, 90 $25.92 $22.04 Y  Material Info PCN Purchase
    AD9852ASVZ Status: Production 80 ld TQFP-EP (14x14mm w/9.5mm EP) 80 Ind Tray, 90 $32.94 $28.00 Y  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.

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