search this site or google for something more
Check the datasheet, application notes (for more power using more chips) or just use circuits designed for lm3875.
SzJ
ps. When using lm3875 (gainlone) circuits don't forget that opa549 has one extra pin for currrent limiting - clean explanation in datasheet
Check the datasheet, application notes (for more power using more chips) or just use circuits designed for lm3875.
SzJ
ps. When using lm3875 (gainlone) circuits don't forget that opa549 has one extra pin for currrent limiting - clean explanation in datasheet
Both the inverted and non-inverted LM3875 circuits will work with the OPA549-I have tried them both.I am using a NI OPA549 amp configured as "current drive" with my FR speakers-works quite well. Keep in mind that the PSRR of these chips is not as good as with the LM chips.The typical pair of 1000uf capacitors on the chips is not good enough. A good quality power supply is a must for satisfactory results.
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