Hi everyone,
Could anyone suggest me, which amplifier is suitable for SGTL5000 to implement audio processing.
note: supply voltage 5V
Hi, @muthu0508
From your other thread, did you Google;
pam8403 amplifier noise problem
You failed to provide a schematic of your project with the PAM unit.
Tom.... 
yeah, I tried with PAM8403, but I am getting noisy output, and I thought that it occurred due to impedance mismatch, so please @TomGeorge Suggest me amplifier to get noise free output.
Hi,
What size filter capacitor did you put at the power supply input pins of the PAM?
How much amplification do you need?
Would a simple LM386 amplifier work, what is the supply voltage?
Tom....
the supply voltage is 5V
What is this.
Please provide a datasheet.
here it is, the data sheet of SGTL5000
SGTL5000
Are you using the cap less design or the one with caps?
I am using with caps
in detail:
In my design I2S is the input of my SGTL5000, and the Lineout of the SGTL5000 is connect to the amplifier, then the output of the amplifier is connected to the speaker with 4ohms 2W, for this design I am looking for suitable amplifier with 3v to 5V input power supply
this is the project which I am currently working, in the output i am getting noise with very low sound of the expected output.
Here i am trying to play the wav file which is stored in the SD card
Hi, @muthu0508
Thanks for the schematic.
Have you tried 100uF capacitpr on the 5V to gnd pins of the PAM?
Tom....
For a 2W output the PAM board will require a peak current of 1A and I doubt that the teensy can supply that much current.
If you use a separate power supply, you can use any amplifier you want.
thank you @jim-p @TomGeorge I did with separate power supply, I got the clear sound. And once again thank you for your replay in your busy schedule.
Great!
Have a nice day!
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