Hi Alan & LF, Thanks for the advise, but I did realise that the input is x2 ie. 274 Khz, it's just that when testing the DDS VFO with the scope on the bench I did the checks at those freq's mentioned
Dear Rik, Gary, LF Group, If that is the case there is no need to get a nice sine (through a LPF and bufferamplifier), most convenient is to pick up the 274kHz signal somewhere at TLL or CMOS level.
Hello Gary, Thanks for the advise, but I did realise that the input is x2 ie. 274 Khz, ... based on the fact that you need the double frequency I assume that you want to drive a class-D PA push-pull