tedlarson
Newbie level 4
I have been fiddling around with some various phase measurement circuits, and I am trying to figure out one I can build cheaply, with minimal components, and get a good result. Ideally, I would like something I can run from a 5V single supply. I have two 10mhz signals...one is a nice reference oscillator...4V pk/pk, sawtooth wave...single ended. The other is a differential sine wave, 50mV pk/pk. I want to measure the phase difference of these two signals. I have one circuit I built using this old line receiver I had laying around....an SN75107AD. I am feeding the differential signal into it, and strobe/gating it with the reference oscillator. It works, but it is not very tolerant to any signal noise, and to really work well, it needs a negative supply voltage, which adds more cost/components.
Anyone have any suggestions on a different way to do this, that is cheap, and can deal with 10mhz signals?
Thanks,
-Ted
Anyone have any suggestions on a different way to do this, that is cheap, and can deal with 10mhz signals?
Thanks,
-Ted