Wednesday, 5 July 2017

I'm building a 3.3 to 5V level converter with a MOSFET but can't reach 800KHz


I've built a level converter for a digital PWM signal that runs at 800KHz. The circuit goes like this:


Bidirectional level shifter


*I'm using a BS170 transistor instead


The problem is the signal gets distorted at around 10KHz, I think the transistor is supposed to handle the bandwidth. How can I raise the frequency limit?




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