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发明公开
CN105425012A 一种用于连续窄脉冲下的APD像元电压读取电路 失效 - 权利终止

一种用于连续窄脉冲下的APD像元电压读取电路
摘要：
本发明公开了一种用于连续窄脉冲下的APD像元电压读取电路，设有探测器、可变增益跨阻放大器(TIA)、共模信号采样电路、自复位比较器和可变增益放大器(VGA)。探测器的输出端连接可变增益跨阻放大器(TIA)的输入端，可变增益跨阻放大器(TIA)的输出端连接共模信号采样电路的输入端，以及自复位比较器的一个输入端，以及可变增益放大器(VGA)的一个输入端，共模信号采样电路的输出端连接自复位比较器的另一个输入端，以及可变增益放大器(VGA)的另一个输入端，自复位比较器的输出端为使能信号输出，可变增益放大器(VGA)的输出端为放大差模电压信号输出。
摘要（英）：

The present invention discloses an APD pixel voltage reading circuit under successive narrow pulses. The circuit is provided with a detector, a variable-gain transimpedance amplifier (TIA), a common mode signal sampling circuit, a self-resetting comparator and a variable gain amplifier (VGA). The output end of the detector is connected to the input end of the variable-gain transimpedance amplifier (TIA). The output end of the variable-gain transimpedance amplifier (TIA) is connected to the input end of the common mode signal sampling circuit, one input end of the self-resetting comparator and one input end of the variable gain amplifier (VGA). The output end of the common mode signal sampling circuit is connected to the other input end of the self-resetting comparator and the other input end of the variable gain amplifier (VGA). The output end of the self-resetting comparator outputs an enable signal, and the output end of the variable gain amplifier (VGA) outputs an amplified differential mode voltage signal.

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