first, i would like to say thank you to all that have helped me in many ways. ya'll have made it possible for me to enjoy something that i always wanted to try and do and even the small things im doing now are helping learn so much.
so with that buttering you guys up a little (LOL) here a couple small questions.
is it better to control the input into a LM386 or control output of LM386 with the digital pot (MCP41100 - 100K)
i think the impedance and/or voltage would still be within specs if i controlled the output of the small amp, correct?
setup with 200 gain on LM386.
reason im asking:
i have a 328P with 2 - MCP41100 with TDA2050 (32W amps 1 - left and 1 -right channels)
i am using the 3.5 headphone jack as the input from phone, ipod,... into the MCP and i can hear clicking of the pot as i lower to off.
i'm thinking the TDA2050 output would be too much power through D.Pot but how about a LM386.
is it necessary to use a bypass cap on every input of IC.
pin - 7/VCC
pin - 21/AREF
can one '104' film cap (or whatever size needed) be used by all pins or does each need separate bypass caps?