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AD Direct Digital Synthesis Modules. The circuit is taken directly from the example in the AD datasheet. and uses a MHz clock and a 40MHz output. Part Number: AD, Maunfacturer: Analog Devices, Part Family: AD, File type: PDF, Document: Datasheet – semiconductor. Introduction. This module described here is based on ADS, a CMOS, MHz, and Complete DDS. Synthesizer. The AD is a highly integrated device.

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It turned out to be a speck of something on the Arduino UNO itself. The square wave is around 5 volts peak-to-peak. D9 is a PWM pin so the display’s backlight brightness can be adjusted if desired. Please enter samples into your cart to check sample availability.

AD Direct Digital Synthesis Modules

I had to install a plug-in so it would display correctly. Transit times from these sites may vary. Hi N8RO, I wanted to throw a notice out that some of the boards coming out of china have a 3. Temperature ranges may vary by model. I did consider removing the pot and using a panel-mounted one instead but I decided against it for this simple project.

I also hooked up an SDR and checked but saw nothing there either. Good afternoon sir, Thank you for your reply. Due to environmental concerns, ADI offers many of our products in lead-free versions. Ok I will see it then. At the very end of the program you can choose which frequency you would like.

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The various ranges specified are as follows: Its really very weak. You code was the starting point! Hi Ron, Thanks for the sketch, I have had my arduino ages, but lack the gumption to get stuck in to it. Pin D9 connects to the display’s LED pin via a ohm resistor. Nice, I also had this going in about 5 mins after the darn thing sat in one of my parts bins for a year — thanks. At the end you could choose what ever frequency you want and that daasheet Great! How tight is the output sine at low e.

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Details including my translation of your code on my blog: The various ranges specified are as follows:. Please Select a Language. The first byte controls phase modulation, power-down enable, and loading format; bytes 2—5 comprise the bit frequency tuning word.

Status Status indicates the current lifecycle of the product. Datashet hooked up the chip and got it working using the code you provided. The model has been scheduled for obsolescence, but may still be purchased for datasheeg limited time.

Anyone out there have any problems getting these boards to work?

Testing an eBay AD9850 DDS module with Arduino Uno

Your code is compiling and working great. I have been playing with the Mega and want to build the antenna analyser project with the AD.

I found more data online, and the seller could not provide support. Let me know how it works out. I’ve used a 5 volts 1.

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I will greatly appreciate if anyone can confirm or otherwise what I think is happening. I just used your code to make a nice CW qrpp beacon: One concern though is the current it takes, I measured mA under 5V mW.

Thanks for the info. I get some very bad harmonics and ugly looking sine waves the higher the output frequency, starting around 15 MHz. Thanks for your blog. Note that I have changed the four Arduino data port freq control pins of the AD module so that the 8 keypad ports could all be contiguous:. The two rotary encoders are soldered to the small front-panel-mounted PCB with the track side up.

Since my last comment, I have received my AD boards and had it running on the bench in about 5 minutes! I am using this as an oscillator in other radios.

A general description, including details of the ad980 API and physical hook-up, appears on my blog: Orient the board so that the pot is on the right, the OSC on the left. Here is a post I made about it and another toy I got. Anyway, If what I am saying is correct then I will be contacting the supplier for the replacement of the module.

I am new datasheeet Arduino and new with DDS.