Hi everyone,
I'm building a guitar amplifier on TDA7498MV with EQ, and have the following problem:
Since the EQ is built on virtual ground with 15 Volts offset, I have to protect the inputs of TDA from transient response(split capacitors charge/discharge on turning on/off).
I'm about to use the circuit as in attached file
and confused about D3, D4 diodes.
If I use usual silicon diodes, the voltage on INN/INP can get lower than -0,3 Volts(absolute maximum ratings from datasheet). Schottky diodes can have leakage current. 5 uA is still acceptable, but I don't know how warm they could be in closed case(for example at 100 celsius their leakage current can get up to 10mA).
Does anyone knows the most suitable solution for such case ?
Thanks in advance
I'm building a guitar amplifier on TDA7498MV with EQ, and have the following problem:
Since the EQ is built on virtual ground with 15 Volts offset, I have to protect the inputs of TDA from transient response(split capacitors charge/discharge on turning on/off).
I'm about to use the circuit as in attached file
and confused about D3, D4 diodes.
If I use usual silicon diodes, the voltage on INN/INP can get lower than -0,3 Volts(absolute maximum ratings from datasheet). Schottky diodes can have leakage current. 5 uA is still acceptable, but I don't know how warm they could be in closed case(for example at 100 celsius their leakage current can get up to 10mA).
Does anyone knows the most suitable solution for such case ?
Thanks in advance
