Hello all,
I have designed Low noise preamplifier ckt and PCB. I have got my boards and i am testing them but while testing I am getting huge noise waveform at input as well as output. one thing I have observed is when i am only giving pulse signal to board then there is no noisy waveform but when i am giving power along pulse signal then i am getting huge noisy waveform. what can be the possible reasons and how can i tackle them?
PFA copy of my Circuit and PCB.
I have designed Low noise preamplifier ckt and PCB. I have got my boards and i am testing them but while testing I am getting huge noise waveform at input as well as output. one thing I have observed is when i am only giving pulse signal to board then there is no noisy waveform but when i am giving power along pulse signal then i am getting huge noisy waveform. what can be the possible reasons and how can i tackle them?
PFA copy of my Circuit and PCB.