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Low distortion power op-amps?

I am currently using LM1875 power op-amps as the output stage for a multiphase oscillator used as a turntable motor power supply.

The oscillator itself gives me -115dB distortion but the output stage brings it up to -97 dB. That's still OK but I wonder if I can do better. The margin isn't of enough concern to be bothered making 3 separate discrete amplifiers for the outputs.

Anyone got any recommendations for a power op-amp which will significantly outperform the LM1875? I know the LM3875 is used in the gainclone so I was thinking of trying that, but it seems like overkill to use a 56 watt device when I need 3 watts.

Mark Kelly


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Topic - Low distortion power op-amps? - Mark Kelly 22:48:16 01/27/06 (7)


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