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OPA2111 balanced stereo preamplifier circuit

2017-01-01 03:28  
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OPA2111 balanced stereo preamplifier circuit
Figure shows a balanced stereo preamplifier circuit. Figure (a) is for the left channel preamplifier circuit,and Figure (b) is for the right channel preamplifier. The circuit uses a dual op-amp OPA2111. Left and right channels, respectively, use a op-amp of dual op-amp OPA2111.Thus the left and right channel have a good matching (gain differ is 3dB, bias differ is 0.5pA, drift differ is ± 0.5μV / ℃), and it is appropriate to constitutes a balanced stereo preamplifier.