Other Parts Discussed in Thread: TMUX6202, SN74LV4052A, TMUX1309
Hi
Do Con and Coff change with Vs/Vd input/output voltages?
In the customer's system, the CD4052B is connected in front of the ADC.
Only when the MUX input voltage is around Vdd/2=1.65V, the noise synchronized with the ADC sampling period is measured at X-COM.
I assumed kickback from S/H, but this situation only occurs around X-COM = Vdd/2.
1) What are the possible reasons?
2) Does TI have data like TMUX6202? (This is a customer request.)
* Current customer system and situation
Since there is only a small capacitance connected between X-COM and ADC IN, they will connect a resistor and test again.
Best regards,
Hiroshi