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Reviewed in the United States on March 23, 2024
Quality control on these modules is very poor. Two of the four modules were dead on arrival. The other two worked OK. I will be returning these and will avoid this brand in the future.
S. A. ROBBINS
Reviewed in the United States on February 28, 2023
The sine wave output is good to only about 1.5 Mhz then it starts to distort, drop in voltage and becomes unstable. The sine wave output voltage max is about 760 millivolts but the square wave is about 5 volts which is not mentioned anywhere on the web page. So if you were amplifying the sine wave and switched to square wave, good chance of damaging your circuitry. There is no information on the board itself but easy to find a datasheet on the AD9833.The board is usable for low frequency work but not even close to the specs claimed. If it hadn't been so overrated on the web page, included missing information and if there was information on the board itself, I would have given it 5 stars instead.
Network Ninjas
Reviewed in the United States on October 5, 2023
need to replace a crystal? generate a small sine or square wave signal? this module is your friend up to 12.5mhz.
Viking Lawyer
Reviewed in the United States on November 17, 2021
Nice sine wave up to 10 MHz. You must make an LC low pass filter for the output though. Without the filter, the maximum decent looking sine waveform is about 1 or 2 MHz tops. Even then there's a fair amount of noise on it. With the filter - looking at it on my spectrum analyzer, it's within spec according to Analog Devices data sheet. Very easy to write a driver for as the datasheet is easy to follow. BTW you need to get the Data Sheet online from Analog Devices, it comes with nothing except the board and a header you can solder on. Recommended if you want to make a nice function generator for audio work or you need to make:- a nice 455 kHz IF injector - you can easily amplitude modulate it with a JFET or something.- a nice RF source for an exciter, say, up to about 10 MHz, again you can modulate if AM quite easily.- want to make a LO so you can feed it into a mixer ( I tried this out and was pleased with the results) to make a SW or AM radio.- a nice compact RF source for testing other circuits.Its just a handy little module. I'd also recommend the AD9850 modules, from which you can get 40 MHz of usable sine wave from. Or, alternately you can place some frequency doublers behind this unit. I did this with one unit and added another with a mixer and developed a nice 224MHz FM signal.Lots of fun with this module.
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