VS1053: amplitude too big for amplifier

Writing software that inputs and/or outputs audio and performs DSP algorithms such as filters, new codecs or audio effects.
Posts: 15
Joined: Mon 2012-02-06 23:04

VS1053: amplitude too big for amplifier

Postby zulunation » Thu 2016-03-24 22:05


I'm using vs1053 decoder with an amplifier. The problem is that the maximum amplitude that my amplifier can apply is 100mV and the Peak to Peak value for vs1053 is 1.83 V.
Is there any way to lover the amplitude using hardware technique not the software?
I understand that we simple can reduce the volume on initialization to make the output 100mV but the better way would be to scale the dynamic range of decoder. Maybe some attenuation could be used?

User avatar
VLSI Staff
Posts: 2322
Joined: Tue 2010-06-22 13:43

Re: VS1053: amplitude too big for amplifier

Postby Panu » Mon 2016-03-28 20:51

Use a resistor divide to bring down the voltage?

Info: Line In and Line Out, VS1000 User interface, Overlay howto, Latest VSIDE, MCU Howto, Youtube
Panu-Kristian Poiksalo, VLSI Solution Oy

Return to “DSP and Audio Software”

Who is online

Users browsing this forum: No registered users