How to Fix ESS Hump on SGD1 and LA-QXD1

[BR52]

Complimentary useful info about Khadas buffer attached (ideal amplifiers model used with Gain=100000).

Hi, I am a little confused with the schematic. OUTL will only show the virtual DC offset.

 

[somebodyelse]

Hi, I am a little confused with the schematic. OUTL will only show the virtual DC offset.

You'll have to look at the actual PDF schematic from Khadas, not the attached excerpt, as IIRC there's another opamp stage connected to the L+, L- and OUTL nodes, but split out into another schematic block. It makes it less than obvious what's going on at first glance.

 

[BR52]

You'll have to look at the actual PDF schematic from Khadas, not the attached excerpt, as IIRC there's another opamp stage connected to the L+, L- and OUTL nodes, but split out into another schematic block. It makes it less than obvious what's going on at first glance.

Thanks