The circuit shown has the component values calculated for a frequency of 1 kHz. TL064 can also be used. We found this setting on Motorola's 1993 Linear Interface ICs. The font must be symmetrical.

The circuit shown has the component values calculated for a frequency of 1 kHz. TL064 can also be used. We found this setting on Motorola's 1993 Linear Interface ICs. The font must be symmetrical.