Hi Mansur, Some considerations are leakage current, crosstalk, on-resistance and charge injection. There are many good MUXes and switches for crosstalk and low on-resistance, but finding one that is low leakage is very important to keep error to a minimum. I have not tried these devices yet as they are relatively new to TI, but one example is the TMUX1108 which is an 8:1 MUX. This device can be used with either unipolar or bipolar supply. There is also the TMUX1109 which is a 2-channel 4:1 MUX. There is also the TMUX1119 2:1 MUX that operates unipolar supply only. For switches there is the TMUX1111 family of devices. These are not fully released to production yet, but samples are available. Best regards, Bob B
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