Hi, I'm sudying the schematics of an old analog synth I have.
I would like to know the gain of the OP-amp which is used to amplify the signal coming from a voice chip.
The OP-amp is wired as follows:
- the inverting input of the OP-amp is connected directly to the output of the voice chip.
- the non inverting input is connected to ground.
- there is a feedback loop between the OP-amp output and the inverting input, inside the loop there are a 47kOhm resistor and a 100pf capacitor in parallel
Is there a way to know that gain? I have found many calcultators online, but they require R1 and R2 values...here I see just one resistor!
I would like to know the gain of the OP-amp which is used to amplify the signal coming from a voice chip.
The OP-amp is wired as follows:
- the inverting input of the OP-amp is connected directly to the output of the voice chip.
- the non inverting input is connected to ground.
- there is a feedback loop between the OP-amp output and the inverting input, inside the loop there are a 47kOhm resistor and a 100pf capacitor in parallel
Is there a way to know that gain? I have found many calcultators online, but they require R1 and R2 values...here I see just one resistor!