KD494
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If I needed a to gain up an really small signal, say 100uV peak, up to 1V peak. I'll need a gain of 10,000 to accomplish this. Could I practically push all of this gain onto one stage, using an op-amp like the LTC6406? It has an open loop gain of 90dB and I'm only looking for a gain of 80dB. I understand that bandwidth tends to drop off with gain but I'm operating at relatively low frequencies so this may not be an issue. I also understand that I'll need to limit my bandwidth with a filter for the noise to not absolutely kill me with such a large gain. The op-amp never mentions use above a gain of 100 but I'm wondering if that's because it would somehow become unstable or they just don't see it being very useful with a gain that high. Thanks.