作者: Akihiko Ono
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摘要: A DC offset cancellation circuit that is capable of canceling a voltage occurring between pair differential output signals amplification circuit, while preventing signal waveform from being distorted due to accumulation AC components and photo-electric pulse conversion generating an electrical accurately reproduces rise timing fall optical by the are provided. provided with photodiode, I-V first having second reference generation comparison circuit. The uses changeover change state low-pass filter hold function in synchronization inversion signal, performs negative feedback filtered which generated subjecting third filtration or held during changeover.