Post History
What is your best suggestion for building a follower that would ideally satisfy the following spec: frequency: from 100 Hz (or lower) to 1 GHz input signal impedance: 1 Mohm input signal ampli...
#5: Post edited
by
Lorenzo Donati
·
2023-08-09T21:19:44Z (over 1 year ago)
Retagged.
#4: Post edited
by
coquelicot
·
2021-03-17T14:28:34Z (almost 4 years ago)
- What is your best suggestion for building a follower that would ideally satisfy the following spec:
- * frequency: from 100 Hz (or lower) to 1 GHz
- * input signal impedance: 1 Mohm
- * input signal amplitude: from 1 mV to 1V at least
- * output load to be driven: 50 Ohm.
- * The follower need not be absolutely flat (gain = 1), but actually, it is allowed to reduce the signal by a factor of 0.5.
- * some signal distortion allowed.
- * also, a small DC offset voltage of few mV can be allowed, as I am interested in the AC component of the signal.
- If that is not possible, please give me the suggestion that best approaches these specs. Also, I would be happy if the part names or part numbers are indicated.
- What is your best suggestion for building a follower that would ideally satisfy the following spec:
- * frequency: from 100 Hz (or lower) to 1 GHz
- * input signal impedance: 1 Mohm
- * input signal amplitude: from 1 mV to 1V at least
- * output load to be driven: 50 Ohm.
- * The follower need not be absolutely flat (gain = 1), but actually, it is allowed to reduce the signal by a factor of 0.5.
- * some signal distortion allowed.
- * also, a small DC offset voltage of few mV can be allowed, as I am interested in the AC component of the signal.
- If that is not possible, please give me the suggestion that best approaches these specs. Also, I would be happy if the part names or part numbers are indicated.
- EDIT: as pinpointed by Olin Lathrop, the 1 GHz requirement is fundamentally incompatible with the 1 M Ohm input impedance requirement. So, there is no point to go further for the moment.
#3: Post edited
by
coquelicot
·
2021-03-16T11:28:29Z (almost 4 years ago)
What is you best suggestion for building a follower that would ideally satisfy the following spec:- * frequency: from 100 Hz (or lower) to 1 GHz
- * input signal impedance: 1 Mohm
- * input signal amplitude: from 1 mV to 1V at least
- * output load to be driven: 50 Ohm.
- * The follower need not be absolutely flat (gain = 1), but actually, it is allowed to reduce the signal by a factor of 0.5.
- * also, a small DC offset voltage of few mV can be allowed, as I am interested in the AC component of the signal.
If that is not possible, please give me the suggestion that best approach these specs. Also, I would be happy if the part names or part numbers are indicated.
- What is your best suggestion for building a follower that would ideally satisfy the following spec:
- * frequency: from 100 Hz (or lower) to 1 GHz
- * input signal impedance: 1 Mohm
- * input signal amplitude: from 1 mV to 1V at least
- * output load to be driven: 50 Ohm.
- * The follower need not be absolutely flat (gain = 1), but actually, it is allowed to reduce the signal by a factor of 0.5.
- * some signal distortion allowed.
- * also, a small DC offset voltage of few mV can be allowed, as I am interested in the AC component of the signal.
- If that is not possible, please give me the suggestion that best approaches these specs. Also, I would be happy if the part names or part numbers are indicated.
#2: Post edited
by
coquelicot
·
2021-03-16T08:29:19Z (almost 4 years ago)
How doing a follower satisfying rather extreme requirements.
- How building a follower satisfying rather extreme requirements.
#1: Initial revision
by
coquelicot
·
2021-03-16T08:28:41Z (almost 4 years ago)
How doing a follower satisfying rather extreme requirements.
What is you best suggestion for building a follower that would ideally satisfy the following spec: * frequency: from 100 Hz (or lower) to 1 GHz * input signal impedance: 1 Mohm * input signal amplitude: from 1 mV to 1V at least * output load to be driven: 50 Ohm. * The follower need not be absolutely flat (gain = 1), but actually, it is allowed to reduce the signal by a factor of 0.5. * also, a small DC offset voltage of few mV can be allowed, as I am interested in the AC component of the signal. If that is not possible, please give me the suggestion that best approach these specs. Also, I would be happy if the part names or part numbers are indicated.