Hello,
I am currently working on the modernization of a certain construction.
It is a Class D audio amplifier system built into a certain device. The system power is ~15VDC. The schematics is based on the TI TPA3128D2 datasheet. I would like to increase its power a bit.
In the present solution, the analog input signal is about 300mV (pk-pk). Because I can not raise the supply voltage, I thought about increasing the input signal. Is it good idea? I thought about a simple solution consisting in inserting between the signal source and the TPA3128D2 amplifier "preamplifier" based on two LM358 operational amplifiers (for left and right channel). Is this a good idea and does it make any sense?
I am currently working on the modernization of a certain construction.
It is a Class D audio amplifier system built into a certain device. The system power is ~15VDC. The schematics is based on the TI TPA3128D2 datasheet. I would like to increase its power a bit.
In the present solution, the analog input signal is about 300mV (pk-pk). Because I can not raise the supply voltage, I thought about increasing the input signal. Is it good idea? I thought about a simple solution consisting in inserting between the signal source and the TPA3128D2 amplifier "preamplifier" based on two LM358 operational amplifiers (for left and right channel). Is this a good idea and does it make any sense?