I have a current source of square pulses (0-20 uA) generated by a NI 9265 device. I am trying to build a fast switching circuit using TI CD4051 multiplexer to switch the current signal between different channels to apply it to different electrode pairs. The problem I am having is getting current on all channels even when all channels are OFF. Mux however is doing fine with a voltage signal. Any suggestion would be highly appreciated.
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