Hi, I am looking for suggestions to some simple, low power & cheap audio amp ICs, with following set of requirements.
# It will be powered by a 6v lead acid battery. (for anything that needs higher voltage, i may have to use a boost converter, which may not be ideal for enjoying music, i guess)
# It will be driving a pair of 4Ω 2.5" speaker for in room personal use, probably will never be volumed up above 0.5W each channel i think.
# Should not be having any audible noise for no signal or anything. While playing with above power, should not have any distortion either.
# should be compact and easy to make.
# Audio source will be a mobile fone or pmp, probably will be over bluetooth or may be just cord.
# Chip should be common/popular and easy to find.
While searching, found some results:
1) TBA820M
2) LM386
But some people saying, both above produce some noise, and I am worried about their o/p capabilities @6V.
3) TDA2003
this one seems capable, but looks like price is higher a bit.
4) TDA2822m
Not sure what to expect from this, but this one IC can drive 2 channels.
So, please suggest & share your views. I don't want to get into too deep into technicals, just looking for good quality with portability.
# It will be powered by a 6v lead acid battery. (for anything that needs higher voltage, i may have to use a boost converter, which may not be ideal for enjoying music, i guess)
# It will be driving a pair of 4Ω 2.5" speaker for in room personal use, probably will never be volumed up above 0.5W each channel i think.
# Should not be having any audible noise for no signal or anything. While playing with above power, should not have any distortion either.
# should be compact and easy to make.
# Audio source will be a mobile fone or pmp, probably will be over bluetooth or may be just cord.
# Chip should be common/popular and easy to find.
While searching, found some results:
1) TBA820M
2) LM386
But some people saying, both above produce some noise, and I am worried about their o/p capabilities @6V.
3) TDA2003
this one seems capable, but looks like price is higher a bit.
4) TDA2822m
Not sure what to expect from this, but this one IC can drive 2 channels.
So, please suggest & share your views. I don't want to get into too deep into technicals, just looking for good quality with portability.
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