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Features
- 400 MSPS Internal DDS Clock Speed
- 48-bit frequency tuning word
- 14-bit Programmable Phase Offset
- Integrated 14-bit DAC
- Excellent Dynamic Performance
- Phase noise ≤ 135 dBc/Hz @ 1 KHz offset
- −80 dB SFDR @ 160 MHz (±100 KHz offset IOUT)
- 25 Mb/s write-speed serial I/O control
- 655 MHz programmable input dividers for the phase
- frequency detector (÷M, ÷N) {M, N = 1..16} (bypassable)
- Programmable RF divider (÷R) {R = 1, 2, 4, 8} (bypassable)
- 8 phase/frequency profiles
- 1.8 V supply for device operation
- 3.3 V supply for I/O and charge pump
- Software controlled power-down
- 48-lead LFCSP package
- Automatic linear frequency sweeping capability (in DDS)
- Programmable charge pump current (up to 4 mA)
- Phase modulation capability
- Multichip synchronization
- Dual-mode PLL lock detect
- 655 MHz CML-mode PECL-compliant driver
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The AD9956 is specified to operate over the extended automotive range of −40°C to +125°C.
Applications
- Agile LO frequency synthesis
- FM chirp source for radar and scanning systems
- Automotive radars
- Test and measurement equipment
- Acousto-optic device drivers
Ask a Question
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AD9956
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Application Note 20
AN-342: Analog Signal-Handling for High Speed and Accuracy
AN-847: Measuring a Grounded Impedance Profile Using the AD5933 (Rev.A)
AN-843: Measuring a Loudspeaker Impedance Profile Using the AD5933 (Rev.A)
AN-851: A WiMax Double Downconversion IF Sampling Receiver Design (Rev.0)
AN-543: High Quality, All-Digital RF Frequency Modulation Generation with the ADSP-2181 and the AD9850 DDS
AN-632: Provisionary Data Rates Using the AD9951 DDS as an Agile Reference Clock for the ADN2812 Continuous-Rate CDR (Rev.0)
AN-605: Synchronizing Multiple AD9852 DDS-Based Synthesizers (Rev.0)
AN-587: Synchronizing Multiple AD9850/AD9851 DDS-Based Synthesizers (Rev.0)
AN-419: A Discrete, Low Phase Noise, 125 MHz Crystal Oscillator for the AD9850
AN-939: Super-Nyquist Operation of the AD9912 Yields a High RF Output Signal (Rev.0)
AN-237: Choosing DACs for Direct Digital Synthesis
AN-927: Determining if a Spur is Related to the DDS/DAC or to Some Other Source (For Example, Switching Supplies) (Rev.0)
AN-769: Generating Multiple Clock Outputs from the AD9540 (Rev.0)
AN-280: Mixed Signal Circuit Technologies
AN-345: Grounding for Low-and-High-Frequency Circuits
AN-823: Direct Digital Synthesizers in Clocking Applications Time (Rev.0)
AN-953: Direct Digital Synthesis (DDS) with a Programmable Modulus
AN-769: Generating Multiple Clock Outputs from the AD9540
AN-557: An Experimenter’s Project for Incorporating the AD9850 Complete-DDS Device as a Digital LO Function in an Amateur Radio Transceiver*
AN-423: Amplitude Modulation of the AD9850 Direct Digital Synthesizer
Technical Articles 20
DDS Device Provides Amplitude Modulation
DDS Applications
Digital Potentiometers Vary Amplitude In DDS Devices
Digital Waveform Generator Provides Flexible Frequency Tuning for Sensor Measurement
DDS Circuit Generates Precise PWM Waveforms
DDS IC Initiates Synchronized Signals
DDS Device Produces Sawtooth Waveform
DDS Design
DDS Simplifies Polar Modulation
DDS IC Plus Frequency-To-Voltage Converter Make Low-Cost DAC
Video Portables and Cameras Get HDMI Outputs
Two DDS ICs Implement Amplitude-shift Keying
400-MSample DDSs Run On Only +1.8 VDC
ADI Buys Korean Mobile TV Chip Maker
The Year of the Waveform Generator
Simple Circuit Controls Stepper Motors
Synchronized Synthesizers Aid Multichannel Systems
Speedy A/Ds Demand Stable Clocks
Improved DDS Devices Enable Advanced Comm Systems
Integrated DDS Chip Takes Steps To 2.7 GHz
Product Highlight 1
Evaluation Design File 1
Frequently Asked Question 1
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 Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| AD9956YCPZ |
48-Lead LFCSP (7mm x 7mm x 0.85mm w/ EP)
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- AD9956YCPZ
- Pin/Package Drawing
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48-Lead LFCSP (7mm x 7mm x 0.85mm w/ EP)
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Reliablity Data
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SamacSys
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Product Lifecycle
PCN
Jun 9, 2021
- 20_0126
Conversion of Select Sizes LFCSP Products from Punched to Sawn and Transfer of Assembly Site to ASE Korea
AD9956YCPZ
PRODUCTION
Sep 13, 2017
- 16_0077
CANCELLED: Conversion of Select 4x4, 5x5, 6x6 and 7x7mm LFCSP Package Outlines from Punch to Sawn and Transfer of Assembly Site to ASE Korea.
Filter by Model
Part Models
Product Lifecycle
PCN
Jun 9, 2021
- 20_0126
Conversion of Select Sizes LFCSP Products from Punched to Sawn and Transfer of Assembly Site to ASE Korea
AD9956YCPZ
PRODUCTION
Sep 13, 2017
- 16_0077
CANCELLED: Conversion of Select 4x4, 5x5, 6x6 and 7x7mm LFCSP Package Outlines from Punch to Sawn and Transfer of Assembly Site to ASE Korea.
Software & Part Ecosystem
Evaluation Kits 1
EVAL-AD9956
AD9956 Evaluation Board
Product Detail
This page contains evaluation board documentation and ordering information for evaluating the AD9956.
Resources
Software
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1.81 K
ZIP
4.51 M
ZIP
200.58 K
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7.35 M
Evaluation Kits1
Tools & Simulations 2
ADIsimDDS (Direct Digital Synthesis)
IBIS Model 1
IBIS Model
