Content for AD9850

AD9850

The AD9850 is a highly integrated device that uses advanced DDS technology coupled with an internal high speed, high performance, D/A converter and comparator, to form a complete digitally programmable frequency synthesizer and clock generator function. When referenced to an accurate clock source, the AD9850 generates a spectrally pure, frequency/ phase-programmable, analog output sine wave. This sine wave can be used directly as a frequency source or converted to a square wave for agile-clock generator applications. The AD9850’s innovative high speed DDS core provides a 32-bit frequency tuning word, which results in an output tuning resolution of 0.0291 Hz, for a 125 MHz reference clock input. The AD9850’s circuit architecture allows the generation of output frequencies of up to one-half the reference clock frequency (or 62.5 MHz), and the output frequency can be digitally changed (asynchronously) at a rate of up to 23 million new frequencies per second. The device also provides five bits of digitally controlled phase modulation, which enables phase shifting of its output in increments of 180°, 90°, 45°, 22.5°, 11.25° and any combination thereof. The AD9850 also contains a high speed comparator that can be configured to accept the (externally) filtered output of the DAC to generate a low jitter square wave output. This facilitates the device’s use as an agile clock generator function.

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Project  How to Use Arduino DDS Frequency Signal Generator AD9850

How to Use Arduino DDS Frequency Signal Generator AD9850

“In this Tutorial we will learn how to make a Frequency Signal Generator using a AD9850 module and Arduino. Watch the Video! Note: I managed to get frequency up to +50MHz but the signal quality gets worse with the higher …

Project  Scalar Network Analyser

Scalar Network Analyser

“Scalar Network Analyser using DDS, log amplifiers and ADC. This project is a simple scalar network analyser using a DDS, log amplifiers, multi channel ADC and a generic I/O interface. The pinout matches a Raspberry Pi, but any micro-controller …

Project  HF Antenna Analyser With Arduino and DDS Module

HF Antenna Analyser With Arduino and DDS Module

“In this Instructable I’ll show you how I built a low-cost antenna analyser which can measure an antenna and display its VSWR over any or all of the HF frequency bands. It will find the minimum VSWR and corresponding …

Project  SNA Junior

SNA Junior

“DuWayne and I have been corresponding for a couple of years, sharing mutual interests. I was pleased to be able to give his work a shout in both the printed and ‘spoken’ version of my talk at this year’s …

Project  Arduino + AD9850 30MHZ DDS Signal Generator In 12$

Arduino + AD9850 30MHZ DDS Signal Generator In 12$

“An Precession Signal generator is very easy and affordable make using an arduino and dds synthesizer (ad9850) . Its World’s first smallest portable signal generator build. You can make decent 0 -30 MHZ frequency Signal generator only in 12$ . If …

Project  Build your own cheap antenna analyser

Build your own cheap antenna analyser

“Ham radio is the use of radio frequency spectrum for purposes of non-commercial exchange of messages, wireless experimentation, self-training, etc. Developing a ham radio project may requires using an antenna analyser, a device that is used for measuring input frequency …

Project  Occam’s Microcontroller

Occam’s Microcontroller

“”Occam’s Microcontroller” is my article in the Autumn 2013 edition of the G-QRP Club’s “SPRAT” Journal - and the subsequent presentation at The G-QRP Club’s Rishworth QRP Convention, 26th October 2013 . If you read the pages …