Common mode transient immunity circuit for opto-isolator emulation

The invention discloses a common mode transient immunity circuit for opto-isolator emulation. An isolator chip includes a transmitter circuit coupled to provide differential output signals to respective first terminals of a first and a second capacitor and a receiver circuit coupled to receive the differential output signals from respective second terminals of the first and second capacitors. The transmitter circuit includes a voltage-clamping circuit coupled to receive an input signal and to provide a clamped signal, an oscillator coupled to receive the clamped signal and to provide the differential output signals, and a common mode transient immunity (CMTI) circuit that couples respective first terminals of the first and second capacitors to a lower rail responsive to the clamped signal being low. 本申请公开种用于光隔离器仿真的共模瞬态抗扰性电路。隔离器芯片(100，600)包括经耦合以提供差分输出信号至第电容器和第二电容器(C，C)的相应第端子的发送器电路(110，602)和经耦合以接收来自第电容器和第二电容器的相应第二端子的差分输出信号的接收器电路(106，604)。发送器电路包括经耦合以接收输入信号并提供钳位信号(V)的电压钳位电路(102)，经耦合以接收钳位信号并提供差分输出信号的振荡器(104)，以及响应于