FEDEVEL
Platform forum

Sniper2 , 03-03-2025, 03:11 PM

Hi
So I was looking at digital isolators. It is for functional isolation and I see that all have a MBps speed rating but when I lookin the datasheet I get confused since I don't understand how is that data formated in terms of signal.
Like if a part is rated for 10MBpd can I send a 10MHz signal through it or not?
Went and did math on some eye diagram and it was a bit more then 10Mhz so I am confused.

QDrives , 03-03-2025, 07:15 PM

Those are for digital signals.
Optics, especially LEDs, degrade over time. You want the speed during its lifetime all the time.

Sniper2 , 03-03-2025, 09:21 PM

they are magnetic

Sniper2 , 03-03-2025, 09:21 PM

and there are some capacitive types from TI and infineon?

Sniper2 , 03-03-2025, 09:21 PM

yes i know i want digital, i need to make some gate signals cross and also 1 UART

Sniper2 , 03-03-2025, 09:22 PM

i was considering useing a a cheap MCU as a UART ADC or use some UART ADC

Sniper2 , 03-03-2025, 09:26 PM

might also be able to use SPI ADC but i need to be carefull with CLK signals

Sniper2 , 03-03-2025, 09:26 PM

that is wjy i asked

QDrives , 03-03-2025, 09:49 PM

Still, you want to be able to guarantee the speed.

Sniper2 , 03-03-2025, 09:51 PM

well from what i see delay is well documented