I
[email protected]
- Jan 1, 1970
- 0
Hi,
if i consider a signal with a defined bandwith, how can i choose the
right opamp to amplify it?
For example, if consider a signal with a maximum frequency of 1kHz i
think i should use an opamp with first pole equal or greater to 1kHz:
is it right?If so, what is the phase effect on the real signal?
All frequencies below 1kHz have different phase induced by opamp non
idelities, the output signal is equal to Re(|A|e^jfi), so: what shoud
have is an output time delay or the output signal is distorted
(because different frequencies have different phase shift)? How this
problem is important in real pratical cases?
thanks in advance
if i consider a signal with a defined bandwith, how can i choose the
right opamp to amplify it?
For example, if consider a signal with a maximum frequency of 1kHz i
think i should use an opamp with first pole equal or greater to 1kHz:
is it right?If so, what is the phase effect on the real signal?
All frequencies below 1kHz have different phase induced by opamp non
idelities, the output signal is equal to Re(|A|e^jfi), so: what shoud
have is an output time delay or the output signal is distorted
(because different frequencies have different phase shift)? How this
problem is important in real pratical cases?
thanks in advance