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Dear Technical Support Team,
The amplifier circuit by the operational amplifier is used in the AC signal circuit.
However, the linearity and frequency characteristics of the input / output characteristics are not good.
Is there any recommend device for small input signal?
I think low noise amp is better like audio amp.
How about OPA197 and OPA1641?
■my current settings
Input: 10mV AC sine wave
Output: 470mV AC sine wave (about 47 times)
47kΩ(feedback) & 1kΩ for non-inverting amplifier
Input signal frequency: 40Hz〜1kHz
Best Regards,
ttd
Hi ttd,
Here is the replacement that I found via our search tool.
If you have additional questions, please let us know.
Best,
Raymond
