OPA2347: Is it possible to use this OpAmp as comparator?

Tomas Drabek

Part Number: OPA2347

In our application second opamp in the package is not used and I would like to use it as comparator which will transform sin wave (10 - 400Hz) to square. Is there any issue with this opamp and not usual application? Power supply will be 3.3V and inputs will not exceed power supply voltage.

over 4 years ago

0 Tim Claycomb over 4 years ago

TI__Genius 15410 points

Hi Tomas,

I think "Using Operations Amplifiers as Comparators" will help answer your questions. Due to the slow slew rate of 0.17V/us you will see a slow transition for high to low or low to high but at such a low frequency this may not be an issue.

Also, based on the datasheet I do not see an indication that there are back to back diodes across the inputs of the device. However, it is always good to test to verify this.

Thank you,

Tim Claycomb

Amplifiers

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OPA2347: Is it possible to use this OpAmp as comparator?