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发明授权
CN105958951B 跨阻电路 有权

跨阻电路
摘要：
根据一个实施方式，跨阻电路具备：跨阻放大器，将电流信号转换成电压信号；基准电压生成电路，生成基准电压信号；以及比较器，根据电压信号与基准电压信号的电压电平，生成与电流信号对应的脉冲信号。跨阻放大器具有：第一晶体管，将电流信号放大；电压转换器，对由第一晶体管放大后的电流信号进行电压转换；以及旁路电路，在第一晶体管的控制端子中流动的电流信号超过规定值时，使电流信号旁通。
摘要（英）：

According to one embodiment, a transimpedance circuit includes: a transimpedance amplifier that converts a current signal into a voltage signal, a reference voltage generating circuit that generates a reference voltage signal, and a comparator that generates a pulse signal corresponding to the current signal in accordance with a voltage level of the voltage signal and a voltage level of the reference voltage signal. The transimpedance amplifier includes a first transistor that amplifies the current signal, a voltage converter that converts the current signal into a voltage signal, and a bypass circuit that allows the current signal to be bypassed when the current signal which flows through a control terminal of the first transistor exceeds a predetermined value.

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