What effect does the output ripple have on the signal isolator? The following is a brief introduction by the signal isolator manufacturer. Let's take a look.

The output ripple is generated because the isolator uses a DC/DC circuit to isolate the working power supply of the isolator and supply power to the internal circuit of the isolator. The input signal must also be first modulated into an AC signal by the DC/DC circuit and then isolated by the isolated part of the circuit. The isolated signal is demodulated and then converted into a DC signal output.

The isolator at the core also has a pulse signal. The presence of this high-frequency AC component inside the isolator is what causes the output ripple. Generally, these high-frequency AC components have a frequency of several hundred KHZ, a lot of harmonics, and the pollution of the signal is more difficult to remove. If the output ripple is high, the error of the signal collected by the analog input template of the control system is large, especially for the analog input template of high-speed input. Therefore, when selecting the isolator, the peak-to-peak value of the output ripple should be required to be as small as possible.

The introduction of the signal isolator manufacturer is here, if you want to know more, you can contact us directly.