The OP AMP model for step downing AC voltage for ADC of uc

afridii said:

i read this blog **broken link removed**
to use uc for determining the AC voltage value (rms). the first step is to step down the AC voltage to the TTL level using OP AMP
and the above blog suggested the OP AMP circuitry



so i need to know which model of OP AMP i should use. I think it is a simple DC gain amplifier application only rating has to be considered. but i am still not sure as i am new in op amp application,
kindly someone help.

regards

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crutschow said:

You need a rail-to-rail type, general-purpose op amp. What is your supply voltage?

Note that TTL refers to digital signal levels, not analog.

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akhilpaulv said:

what is meant by 'uc'

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