Hi, I've been requested (in a course, I feel we're not being taught but lerning by ourselves) to design a circuit to amplify a 1 mVpp (f=1KHz) signal to 10Vpp, the idea is to show "how to" handle very low signals (e.g. microvolts coming from a probe), the problem is that I've not worked with circuits for a long time (I've been working in an instrumentation department for some years) and I need to remember what I knew (or what I've forgotten) as fast as possible
I'm thinking of using two inverting amplifiers with a gain of -100 each, and using a pass-band active filter in between (well, I'm pretty sure I have to use opamps since that's what we've been talking about in the course), it's just that I "feel" it's too simple, I think it should be harder
I don't remember anything about filter designing, but I'm sure I can remember after reading some information about it.
Could you please send me your comments/advice/suggestiongs/ideas for the circuit I've been requested (I'm not asking for a ready-to-use design, but if you have one I wouldn't complain
Thanks in advance for your help,
José Jorge.
PS. Sorry for my poor English (it's not my mother language).
I'm thinking of using two inverting amplifiers with a gain of -100 each, and using a pass-band active filter in between (well, I'm pretty sure I have to use opamps since that's what we've been talking about in the course), it's just that I "feel" it's too simple, I think it should be harder
I don't remember anything about filter designing, but I'm sure I can remember after reading some information about it.
Could you please send me your comments/advice/suggestiongs/ideas for the circuit I've been requested (I'm not asking for a ready-to-use design, but if you have one I wouldn't complain
Thanks in advance for your help,
José Jorge.
PS. Sorry for my poor English (it's not my mother language).