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FREQUENCY AUTOMATIC REGULATION CIRCUIT OF GMC FILTER, GM AUTOMATIC REGULATION CIRCUIT OF MUTUAL CONDUCTANCE AMPLIFIER AND ITS MOS INTEGRATED CIRCUIT
FREQUENCY AUTOMATIC REGULATION CIRCUIT OF GMC FILTER, GM AUTOMATIC REGULATION CIRCUIT OF MUTUAL CONDUCTANCE AMPLIFIER AND ITS MOS INTEGRATED CIRCUIT
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机译:GMC滤波器的频率自动调节电路,互导放大器的GM自动调节电路及其MOS集成电路
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摘要
PROBLEM TO BE SOLVED: To automatically regulate gm of a gmC filter to realize a filter with high frequency precision.;SOLUTION: A frequency automatic regulation circuit 11 consists of MOS transistors Q31, Q32, MOS transistors Q33, Q34 connected between a power source Vdd and Q31, Q32, a switched capacitor circuit 13 connected with a source of Q31 and a transistor Q42 connected with the other end of the switched capacitor circuit 13 and a source of the MOS transistor Q32, etc. and control voltage VGM is provided to a gate of Q42. gm is automatically regulated to a fixed value by supplying the control voltage VGM to a current source of a mutual conductance amplifier.;COPYRIGHT: (C)2006,JPO&NCIPI
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