DDS (direct digital synthesis ICs) from Analog Devices are world-leading and incorporate various features (on board comparators, RAM, PLLs, mixers and registers), making them ideal agile frequency synthesizer solutions in systems from communications to test equipment and radar.
Tutorials & Webcasts
Fundamentals of Frequency Synthesis, Part 2: Direct Digital Synthesis (DDS)
The second of a 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.
Fundamentals of Frequency Synthesis, Part 1: Phased Locked Loops
The first of a two-part series on frequency synthesis, with an introduction to Phased Locked Loops. This webcast looks at the need for frequency generation, the techniques from the past present and future, and how to assess the performance of a frequency synthesis, and real world applications. Particular attention will be focused on Phase Locked Loops (PLL's) as frequency synthesizers.
Low Power DDS: Benefits, Features, and Applications
Join us for this specially-produced webcast on DDS technology and ADI DDS products.
DDS Technical Articles
Improved DDS Devices Enable Advanced Comm Systems
by Valoree Young, Analog Devices (Electronic Products, September 2006)
Design A Clock-Distribution Strategy With Confidence
by Demetrios Efstathiou (Electronic Design, April 27, 2006)
The Year of the Waveform Generator
(Test & Measurement World, 12/1/2005)
by Eva Murphy and Colm Slattery, Analog Devices, Inc. (EETimes, 9/26/2005)
Synchronized Synthesizers Aid Multichannel Systems
by David Brandon and John Kornblum, Analog Devices, Inc. (Microwaves & RF, 9/2005)
DDS IC Initiates Synchronized Signals
Microwaves & RF Cover Story, July 2005)
Understand the Effects of Clock Jitter and Phase Noise on Sampled Systems
... Much of your system's performance depends on jitter specifications, so careful assessment is critical.
by Brad Brannon, Analog Devices (EDN, 12/7/2004)
DDS Simplifies Polar Modulation
Basic modulation mathematics and DDS (direct digital synthesis) provide designers with an all-digital technique for generating polar-encoded carrier signals.
By Ken Gentile, Analog Devices (EDN, 8/5/2004)
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)
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.
By David Brandon, Analog Devices, Inc. (EDN, 5/13/2004)
DDS IC Plus Frequency-To-Voltage Converter Make Low-Cost DAC
by Noel McNamara, Analog Devices, Inc. (EDN Design Idea, 2/5/2004)
Basics of Designing a Digital Radio Receiver (Radio 101)
By Brad Brannon, Analog Devices, Inc. (pdf, 77 kB)
Two DDS ICs Implement Amplitude-shift Keying
by Noel McNamara, Analog Devices, Inc. (EDN Design Idea, 12/25/2003)
Brochures & Bulletins
DDS Configuration Assistant
Determines tuning words and hex codes to program the DDS based on your output frequency, phase, and reference clock. Calculates actual output frequency and the Rset value required for your desired output current level. Illustrates harmonic images and spurs at the output, including the effect of a user-defined analog filter.
AD5933/AD5934 Demonstration and Design Tool
A tool for demonstrating use of the AD5933/AD5934 Impedance Converter / Network Analyzer.
Circuits from the Lab (CftL)
CN-0217: High Accuracy Impedance Measurements Using 12-Bit Impedance Converters
CN-0186: Phase Coherent FSK Modulator
CN-0156: Amplitude Control Circuit for AD9834 Waveform Generator (DDS)
CN-0121: Synchronizing Multiple AD9910 1 GSPS Direct Digital Synthesizers
CN-0109: Low Jitter Sampling Clock Generator for High Performance ADCs Using the AD9958/AD9858 500 MSPS/1GSPS DDS and AD9515 Clock Distribution IC
DDS User Guides
UG-364: Evaluating the AD5933 1 MSPS, 12-Bit Impedance Converter Network Analyzer
UG-313: Evaluating the AD9832 45 mW Power, 3 V to 5.0 V, 25 MHz Programmable Waveform Generator
UG-319: Evaluating the AD9835 200 mW Power, 5 V,50 MHz CMOS Complete DDS
UG-272: Evaluating the AD9833 Low Power 12.65 mW, 2.3 V to 5.5 V, Programmable Waveform Generator
UG-268: Evaluating the AD9838 11 mW Power, 2.3 V to 5.5 V, 75 MHz Complete DDS
UG-269: Evaluating the AD9837 Low Power, 8.5 mW, 2.3 V to 5.5 V, Programmable Waveform Generator
UG-266: Evaluating the AD9834 20 mW Power, 2.3 V to 5.5 V, 75 MHz Complete DDS
UG-208: Evaluation Board User Guide for AD9957
UG-207: Evaluation Board User Guide for AD9910
DDS Application Notes
AN-1108: AD9832/AD9835 Programming Examples
AN-1044: Programming the AD5932 for Frequency Sweep and Single Frequency Outputs
AN-1070: Programming the AD9833/AD9834
AN-953: Direct Digital Synthesis (DDS) with a Programmable Modulus
AN-0996: The Advantages of Using a Quadrature Digital Upconverter (QDUC) in Point-to-Point Microwave Transmit Systems
AN-924: Digital Quadrature Modulator Gain
AN-1053: AD5933 Evaluation Board Example Measurement
AN-0982: The Residual Phase Noise Measurement
AN-280: Mixed Signal Circuit Techniques
AN-922: Digital Pulse-Shaping Filter Basics