AD9951
400 MSPS 14-Bit 1.8 V CMOS Direct Digital Synthesizer
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Overview
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 input/output (I/O) control
- 1.8 V power supply
- Software and hardware controlled power down
- 48-lead TQFP/EP package
- Phase-locked loop (PLL) REFCLK multiplier (4× to 20×)
- Internal oscillator; can be driven by a single crystal
- Phase modulation capability
- Multichip synchronization
Product Details
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
- Agile local oscillator (LO) frequency synthesis
- Programmable clock generators
- Test and measurement equipment
- Acousto-optic device drivers
Product Categories
Markets and Technologies
Product Lifecycle
Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Documentation & Resources
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AN-769: Generating Multiple Clock Outputs from the AD9540 (Rev. 0)2/14/2015
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AN-939: Super-Nyquist Operation of the AD9912 Yields a High RF Output Signal (Rev. 0)2/14/2015
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AN-837: DDS-Based Clock Jitter Performance vs. DAC Reconstruction Filter Performance (Rev. 0)2/14/2015
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AN-557: An Experimenter's Project: (Rev. 0)2/14/2015
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AN-419: A Discrete, Low Phase Noise, 125 MHz Crystal Oscillator for the AD98502/14/2015
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AN-237: Choosing DACs for Direct Digital Synthesis2/14/2015
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AN-423: Amplitude Modulation of the AD9850 Direct Digital Synthesizer2/14/2015
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AN-345: Grounding for Low-and-High-Frequency Circuits2/14/2015
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AN-342: Analog Signal-Handling for High Speed and Accuracy2/14/2015
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AN-823: Direct Digital Synthesizers in Clocking Applications Time (Rev. 0)2/14/2015
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AN-280: Mixed Signal Circuit Technologies2/14/2015
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AN-605: Synchronizing Multiple AD9852 DDS-Based Synthesizers (Rev. 0)2/14/2015
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AN-927: Determining if a Spur is Related to the DDS/DAC or to Some Other Source (For Example, Switching Supplies) (Rev. 0)2/14/2015
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AN-587: Synchronizing Multiple AD9850/AD9851 DDS-Based Synthesizers (Rev. 0)2/14/2015
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AN-953: Direct Digital Synthesis (DDS) with a Programmable Modulus (Rev. B)3/27/2008
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AN-851: A WiMax Double Downconversion IF Sampling Receiver Design (Rev. 0)7/26/2006
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AN-632: Provisionary Data Rates Using the AD9951 DDS as an Agile Reference Clock for the ADN2812 Continuous-Rate CDR (Rev. 0)9/25/2003
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AN-543: High Quality, All-Digital RF Frequency Modulation Generation with the ADSP-2181 and the AD9850 DDS9/12/2002
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• AN-543 - Monaural FM Transmitter
DSP -
• AN-543 - Stereo FM Transmitter
DSP
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FAQs7/26/2017
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Video Portables and Cameras Get HDMI Outputs4/13/2007
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Improved DDS Devices Enable Advanced Comm Systems9/1/2006
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ADI Buys Korean Mobile TV Chip Maker6/7/2006
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The Year of the Waveform Generator12/1/2005
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DDS Applications9/26/2005
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Synchronized Synthesizers Aid Multichannel Systems9/20/2005
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DDS IC Initiates Synchronized Signals7/20/2005
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Digital Waveform Generator Provides Flexible Frequency Tuning for Sensor Measurement12/7/2004
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DDS Simplifies Polar Modulation8/5/2004
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DDS Design5/13/2004
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Integrated DDS Chip Takes Steps To 2.7 GHz4/28/2004
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Speedy A/Ds Demand Stable Clocks3/22/2004
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DDS IC Plus Frequency-To-Voltage Converter Make Low-Cost DAC2/5/2004
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Simple Circuit Controls Stepper Motors1/8/2004
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Two DDS ICs Implement Amplitude-shift Keying12/25/2003
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DDS Circuit Generates Precise PWM Waveforms10/2/2003
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DDS Device Produces Sawtooth Waveform7/10/2003
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400-MSample DDSs Run On Only +1.8 VDC12/1/2002
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Digital Potentiometers Vary Amplitude In DDS Devices5/29/2000
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DDS Device Provides Amplitude Modulation9/2/1999
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Basics of Designing a Digital Radio Receiver (Radio 101)3/6/1998
Tools & Simulations
Design Tools
ADIsimDDS (Direct Digital Synthesis)
ADIsimDDS uses mathematical equations to model and illustrate the overall performance of the selected device. ADIsimDDS calculates the required FTW, given the reference clock frequency and desired output frequency. This tool also models an estimate of the overall spectral performance, and allows the user to explore the effects of external reconstruction filters.
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 |
|---|---|---|---|---|
| AD9951YSVZ | Material Declaration | Reliability Data | 48-Lead TQFP (7mm x 7mm w/ EP) | |
| Wafer Fabrication Data |
PCN-PDN Information
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Support & Discussions
AD9951 Discussions
RE: AD9951: about power-up sequence
12 week(s) ago in Direct Digital Synthesis (DDS)
Sample & Buy
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Lead Times
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Sampling
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