Hello, all
What kind of op-amp is better for the three op-amp instrumentation amplifiers? The frequency of the differential signal is relatively high, and finally, the differential is converted to single-ended.
How about INA115BU, or INA114?
I learn about the datasheet of INA115BU. It seems to be a proper choice.
But I wanna ask for more ideas.
Good listening!
What kind of op-amp is better for the three op-amp instrumentation amplifiers?
It depends on the application but in general terms, you should be looking for high CMRR and a large gain. Also, since you mentioned relative high frequencies you should also check the frequency response and the typical performance curves on the datasheets. Although it looks like the options you mentioned are very similar.
Also, since you mentioned INAās Iām assuming youāre looking for an IC, however, you also have the option to build the in-amp with individual op-amps, if you are interested in that I recommend checking this guide.
A DESIGNERS GUIDE TO INSTRUMENTATION AMPLIFIERS.pdf (1.8 MB)
Which also has some great pointers for choosing an in-amp. I suggest checking pages 8, 13, 17, 33.
I hope that helps!
So niceļ¼ Thanks!
it is very detailed and helpful.
kakwu
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