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do you think this is a good linearity ? (THD=1.7%) if I change it to db , it would be 20log(THD/100)=35dB !!
because I saw poeple put the measure of linearity in dB not in % .
do you think this is a good linearity ? (THD=1.7%) if I change it to db , it would be 20log(THD/100)=35dB !!
because I saw poeple put the measure of linearity in dB not in % .
1.) It must be -35 dB
2.) What means "good"? Depends on the applcation and the corresponding requirements. Sometimes it is acceptable and in some other cases it is not.
but in general, how can I improve the linearity ?
becuase this value (-35dB) seems to be very low compared to other filters I found in the litreture for the same application I am designing for.
some filters shows -60dB!
but in general, how can I improve the linearity ?
becuase this value (-35dB) seems to be very low compared to other filters I found in the litreture for the same application I am designing for.
some filters shows -60dB!
The degree of linearity (to be measured as THD) always depends on signal amplitudes within the circuitry.
Thus, the simplest solution - without modifying the circuit - is to decrease the input amplitude.
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