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- 5V to 3.3V Level shifting circuit 1 answer
I have some analogue signals between 0 and 5 Volts being fed from a multiplexer into another board that only accepts signals up to 3v3.
What is the best way to step down the voltage?
The signal doesn't need to be very precise (It is going to be used to select one of 32 options depending on which range of values it falls under and will be a fixed value) and doesn't need to be updated often (User is only likely to change the value two or three times during operation)
I was thinking of just using a 3K3 Ohm x 2K2 Ohm voltage divider with precise tolerances but I wonder if anyone can foresee any problems with this or can recommend a better method?
How should I link my analogue reference? am I going to run into problems if I just use another identical divider to jump the 5V rail down?