mordak
Member level 5
Hi all,
I am a bit confused about dynamic range of amplifiers. Based on my understanding, dynamic range is defined as the ratio of the maximum signal the amplifier can deliver over its total noise. Now here is the problem, if you have an amplifier that has a low bandwidth, say 1 kHz, it may have less integrated noise than an amplifier with 1 GHz bandwidth.
Dynamic range of the low bandwidth amp may be better than the one with wide bandwidth (just because one has wider bandwidth). If you use the same bandwidth for both of these opamps to calculate the integrated noise, the wide bandwidth opamp may give better dynamic range.
I think in that sense, it is not fair to look at the dynamic range to compare two opamps, if they have different bandwidth. Am I missing something here?
Any help is appreciated!
I am a bit confused about dynamic range of amplifiers. Based on my understanding, dynamic range is defined as the ratio of the maximum signal the amplifier can deliver over its total noise. Now here is the problem, if you have an amplifier that has a low bandwidth, say 1 kHz, it may have less integrated noise than an amplifier with 1 GHz bandwidth.
Dynamic range of the low bandwidth amp may be better than the one with wide bandwidth (just because one has wider bandwidth). If you use the same bandwidth for both of these opamps to calculate the integrated noise, the wide bandwidth opamp may give better dynamic range.
I think in that sense, it is not fair to look at the dynamic range to compare two opamps, if they have different bandwidth. Am I missing something here?
Any help is appreciated!