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Related question for [FAQ] What is Charge Injection?

Other Parts Discussed in Thread: TMUX1574

Hi!

I have a related question to [FAQ] What is Charge Injection?

Does it mean if MUX works only on a resistive load the charge rejection will affect only internal MUX capacitance?

For example for TMUX1574 when we apply 3 volts on the MUX input and turn on the switch, charge injection will be approximately 3.5 pC and the ON capacitance Con for TMUX1574 is equal 7.5 pF:

dVout = 3.5 pC / 7.5 pF =  0.47 V.

So, we will have 3.47 V on the output, when it is 3 V on the input.