AD9951 400 MSPS 14-Bit DAC 1.8 V CMOS Direct Digital Synthesizer

The AD9951 is a direct digital synthesizer (DDS) featuring a 14-bit DAC operating up to 400 MSPS. The AD9951 uses advanced DDS technology, coupled with an internal high speed, high performance DAC to form a digitally programmable, complete high frequency synthesizer capable of generating a frequency-agile analog output sinusoidal waveform at up to 200 MHz. The AD9951 is designed to provide fast frequency hopping and fine tuning resolution (32-bit frequency tuning word). The frequency tuning and control words are loaded into the AD9951 via a serial I/O port.

The AD9951 is specified to operate over the extended industrial temperature range of −40°C to +105°C.

Applications

Features and Benefits
  • 400 MSPS internal clock speed
  • Integrated 14-bit digital-to-analog converter (DAC)
  • 32-bit tuning word
  • Phase noise ≤ −120 dBc/Hz at 1 kHz offset (DAC output)
  • Excellent dynamic performance
    >80 dB SFDR at 160 MHz (±100 kHz offset) AOUT
  • Serial I/O control
  • 1.8 V power supply
  • Software and hardware controlled power down
  • 48-lead TQFP/EP package
  • Support for 5 V input levels on most digital inputs
  • Phase-locked loop (PLL) REFCLK multiplier (4× to 20×)
  • Internal oscillator; can be driven by a single crystal
  • Phase modulation capability
  • Multichip synchronization
    • RF & Microwave
    Data Sheets
    Documentnote
    AD9951: 400 MSPS 14-Bit, 1.8V CMOS Direct Digital Synthesizer Data Sheet (Rev. B)PDF 502.59 K
    Application Notes
    Documentnote
    AN-769: Generating Multiple Clock Outputs from the AD9540 (Rev. 0)PDF 0
    AN-939: Super-Nyquist Operation of the AD9912 Yields a High RF Output Signal (Rev. 0)PDF 221 kB
    AN-837: DDS-Based Clock Jitter Performance vs. DAC Reconstruction Filter Performance (Rev. 0)PDF 313 kB
    AN-621: Programming the AD9832/AD9835PDF 202 kB
    AN-557: An Experimenter's Project: (Rev. 0)PDF 368 kB
    AN-419: A Discrete, Low Phase Noise, 125 MHz Crystal Oscillator for the AD9850PDF 101 kB
    AN-237: Choosing DACs for Direct Digital SynthesisPDF 1156 kB
    AN-423: Amplitude Modulation of the AD9850 Direct Digital SynthesizerPDF 37 kB
    AN-345: Grounding for Low-and-High-Frequency CircuitsPDF 455 kB
    AN-342: Analog Signal-Handling for High Speed and AccuracyPDF 468 kB
    AN-823: Direct Digital Synthesizers in Clocking Applications Time (Rev. 0)PDF 115 kB
    AN-280: Mixed Signal Circuit TechnologiesPDF 2101 kB
    AN-605: Synchronizing Multiple AD9852 DDS-Based Synthesizers (Rev. 0)PDF 527 kB
    AN-927: Determining if a Spur is Related to the DDS/DAC or to Some Other Source (For Example, Switching Supplies) (Rev. 0)PDF 170 kB
    AN-587: Synchronizing Multiple AD9850/AD9851 DDS-Based Synthesizers (Rev. 0)PDF 116 kB
    AN-953: Direct Digital Synthesis (DDS) with a Programmable Modulus (Rev. B)PDF 112 kB
    AN-851: A WiMax Double Downconversion IF Sampling Receiver Design (Rev. 0)PDF 262 kB
    AN-632: Provisionary Data Rates Using the AD9951 DDS as an Agile Reference Clock for the ADN2812 Continuous-Rate CDR (Rev. 0)PDF 138 kB
    AN-543: High Quality, All-Digital RF Frequency Modulation Generation with the ADSP-2181 and the AD9850 DDS
    AN-543 - Monaural FM Transmitter AN-543 - Stereo FM Transmitter    		PDF 49.25 K
    Product Highlight
    Documentnote
    Introducing Digital Up/Down Converters: VersaCOMM™ Reconfigurable Digital ConvertersPDF 63 kB
    Technical Books
    Documentnote
    Frequently Asked Questions
    Documentnote
    Order Information
    Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
    AD9951YSVZ Production48 ld TQFP-EP (7x7 w/3.5mm exposed pad)OTH 250-40 to 105C17.1814.6Y
    Reference Materials
    AD9951: 400 MSPS 14-Bit, 1.8V CMOS Direct Digital Synthesizer Data Sheet (Rev. B) ad9951
    AN-769: Generating Multiple Clock Outputs from the AD9540 (Rev. 0) ad9540
    AN-939: Super-Nyquist Operation of the AD9912 Yields a High RF Output Signal (Rev. 0) ad9540
    AN-837: DDS-Based Clock Jitter Performance vs. DAC Reconstruction Filter Performance (Rev. 0) ad9856
    AN-621: Programming the AD9832/AD9835 ad9540
    AN-557: An Experimenter's Project: (Rev. 0) ad9540
    AN-419: A Discrete, Low Phase Noise, 125 MHz Crystal Oscillator for the AD9850 ad9540
    AN-237: Choosing DACs for Direct Digital Synthesis ad9856
    AN-423: Amplitude Modulation of the AD9850 Direct Digital Synthesizer ad9540
    AN-345: Grounding for Low-and-High-Frequency Circuits ad9220
    AN-342: Analog Signal-Handling for High Speed and Accuracy ad1674
    AN-823: Direct Digital Synthesizers in Clocking Applications Time (Rev. 0) ad9856
    AN-280: Mixed Signal Circuit Technologies ad1674
    AN-605: Synchronizing Multiple AD9852 DDS-Based Synthesizers (Rev. 0) ad9540
    AN-927: Determining if a Spur is Related to the DDS/DAC or to Some Other Source (For Example, Switching Supplies) (Rev. 0) ad9540
    AN-587: Synchronizing Multiple AD9850/AD9851 DDS-Based Synthesizers (Rev. 0) ad9540
    AN-769: 基于AD9540产生多时钟输出 (Rev. 0) ad9540
    AN-237: 放大器直接数字频率合成的DAC选型器应用漫谈 (Rev. 0) ad9540
    AN-953: 具可编程模数的直接数字频率合成器(DDS) (Rev. 0) ad9540
    AN-605: 同步多个基于DDS的频率合成器AD9852 (Rev. A) ad9540
    AN-953: Direct Digital Synthesis (DDS) with a Programmable Modulus (Rev. B) ad9540
    AN-939: 利用AD9912的超奈奎斯特频率操作得到高RF输出信号 (Rev. 0) ad9540
    AN-927: 确定杂散来源是DDS/DAC还是其他器件(例如开关电源)[中文版] (Rev. 0) ad9540
    AN-837: 基于DDS的时钟抖动性能与DAC重构滤波器性能的关系[中文版] (Rev. 0) ad9540
    AN-823: 时钟应用中的直接数字频率合成器[中文版] (Rev. 0) ad9540
    AN-851: 一种WiMax双下变频IF采样接收机设计方案[中文版] (Rev. 0) ad9540
    AN-851: A WiMax Double Downconversion IF Sampling Receiver Design (Rev. 0) ad9856
    AN-345: 低频和高频电路接地 ad9540
    AN-632: 利用AD9951 DDS作为ADN2812连续速率CDR的捷变参考时钟以提供数据速率 (Rev. 0) ad9540
    AN-632: Provisionary Data Rates Using the AD9951 DDS as an Agile Reference Clock for the ADN2812 Continuous-Rate CDR (Rev. 0) ad9540
    AN-621: AD9832/AD9835的编程 (Rev. 0) ad9540
    AN-342: 高速、高精度处理模拟信号[中文版] (Rev. 0) ad9540
    AN-557: 实验者项目： (Rev. 0) ad9540
    AN-419: 用于完整的直接数字频率合成器AD9850的分立、低相位噪声、125MH晶振 (Rev. A) ad9540
    AN-423: 直接数字频率合成器AD9850的幅度调制 (Rev. A) ad9540
    AN-587: 同步多个基于DDS的频率合成器AD9850/AD9851 (Rev. 0) ad9540
    AN-543: 利用ADSP-2181 DSP和AD9850直接数字频率合成器产生高质量、全数字RF频率调制 (Rev. A) ad9540
    AN-543 - Monaural FM Transmitter ad9540
    AN-543: High Quality, All-Digital RF Frequency Modulation Generation with the ADSP-2181 and the AD9850 DDS ad9540
    AN-543 - Monaural FM Transmitter ad9540
    Introducing Digital Up/Down Converters: VersaCOMM™ Reconfigurable Digital Converters ad9856
    RF Source Booklet adf9010
    Basics of Designing a Digital Radio Receiver (Radio 101) ad9856
    Digital Up/Down Converters: VersaCOMM™ White Paper ad9856
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