How to switch a 70mV circuit on and off?

Other Hardware General Electronics
1

I need to turn a very low voltage (0.07V) on and off with one of the digital output pins on my Arduino. I guess I need some sort of logic level converter but I'm not sure what I need to do to work with such a small voltage. Any advice would be appreciated.

2

An analog gate such as a 74HC4066 would work.

Allan

3

Hi,
You can use a reed relay.

4

Thank you both. I ordered a few of each and I'll do some tests to see which solution fits my use case better.

5

Sounds like a XY problem. Maybe a single MOSFET is enough to switch such signal? It depends what and why you want to switch.