--- Quote Start ---
The most simple way is to generate a 20 MHz square wave and extract the fundamental wave by a low-pass filter. Otherwise you need to generate a higher output data rate (e.g. 100 or 200 MS/s) to get a halfway continuous output signal. Data rates of several 100 MS/s aren't a problem for recent FPGA and DAC devices, but I fear you won't find a suitable DAC in DIP package. There are a few devices like ADV7120 (8 Bit, 80 MS/s). You may want to use a SOIC to DIP adapter board however.
--- Quote End ---
Wow, that sounds pretty neat and clever. If I am about to opt for quadrature modulation, is using square wave and low-pass filter still a valid option?
Honored Contributor
