Lm1875, Single Or Dual Supply

[alcuemar]

Dear Friends,

Another doubt,

What and Why is more recommended dual or single power supply for LM1875?

Thanks in advance!!

Alcuemar
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[richie00boy]

Do you mean single as in one for each channel, or single as in single rail and AC (capacitor) coupled input and output?

[alcuemar]

I mean.

Single supply powering the LM1875 with V+ and GNd.

And Split supply or dual supply powering the LM1875 with V+, GND and V-.

Alcuemar

[richie00boy]

OK that's clear now.

I would use a split supply +ve gnd -ve as then you can use DC coupled output which gives better performance.

[alcuemar]

Thanks richie,

So at the end It is better to use Split supply to have better performance, isn't it?

[richie00boy]

If performance takes priority over cost and easy build then yes.