LM1876 Mute & Stand-by

pra3718 · 2012-02-22 1:58 pm

How to build LM1876 with Mute & Stand-by Option with delay ?

GloBug · 2012-02-22 2:35 pm

Mute or standby?
Check the Datasheet, they are wonderful thing.

pra3718 · 2012-02-22 2:47 pm

Thanks for reply, I read Datasheet, Mute & Standby works similarly, If not connected = Mute/Standby OFF. I wish to build with NO Popping. I don't know what affects Mute/Standby to POP.

GloBug · 2012-02-22 2:54 pm

There are some other components you can add, check the optional component section.

A small ceramic cap across the input wires might help.

Edit not much on that sheet, wait for more advise or look at the LM3875 datasheet for some ideas.

pra3718 · 2012-02-22 3:12 pm

A small ceramic cap across the input wires might help.

you mean RF filter ?

pra3718 · 2012-02-22 3:14 pm

While googling I found most of the schematic skipped mute/standby pins.

GloBug · 2012-02-22 3:42 pm

Yes.

I was going to suggest skipping the mute unless you need it.

pra3718 · 2012-02-22 3:46 pm

I was going to suggest skipping the mute unless you need it.

To eliminate POP I purchased LM1876, otherwise I would have used LM1875.

pra3718 · 2012-02-23 9:59 am

Request to Expert Members, Please post for how does mute works.

mjf · 2012-02-23 10:10 am

hello.
if you use the search button you can find threads like this...........

http://www.diyaudio.com/forums/chip-amps/160910-need-lm1876-mute-mode-standby-mode-help.html

pra3718 · 2012-02-23 11:24 am

Thank you, I read this thread and as I understood, I don't wish to use DP SWITCH.

pra3718 · 2012-02-23 11:27 am

Is LM1876 's mute works with capacitor delay.

GloBug · 2012-02-23 2:24 pm

My LM3875 does not pop, it does not need mute for that if you build it properly.

pra3718 · 2012-02-23 3:57 pm

@GloBug: Infact, we are not getting solution, my tda7265's mute works very good like any commercial amp you can not detect when I turn-on my power supply. It starts sounding after 2-3 seconds very silently.

The same thing can be possible to lm1876. I am still waiting for expert member comment who visit this forum very regularly.

pra3718 · 2012-11-23 3:59 pm

While googling..... I found this which has muting, which is not clear parts and not sure whether it will work....

LM1876 Power Amplifier Circuit - Other_circuit - Amplifier_Circuit - Circuit Diagram - SeekIC.com

LM1876 Mute & Stand-by

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