OPA502 hifi music center amplifition circuit

Published:2011/6/30 2:19:00 Author:chopper | Keyword: hifi, music center, amplifition circuit | From:SeekIC

The picture is a hifi music center amplifition circuit.This circuit adopts low noise precise op-amp OPA27 as a preamplifier.The greatest output power can reach 150W.When the output power is 50W and frequency is 20KHz,its total harmonic distortion is 0.02％.And when the frequency is 1KHz,the total harmonic distortion is 0.002％.OPA27 can improve its input impedance by using in-phase input method.When supply voltage is ±15V,the dynamic range of linearity is ±12V.



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