Part Number: TMUXHS4412
Tool/software:
Hi TI Teams:
I have an application circuit that uses TMUXHS4412 to select the switch on the FPD-LINKIV output link of the Serializer HB983W, so that the output can freely choose to use a coaxial interface or a differential interface. However, The AC capacitance at the negative end of coaxial and differential applications is different, 0.1uF for differential and 47nF for coaxial.
Therefore, in order to be compatible with differential and coaxial applications, I connected a 0.1uF capacitor in series at the input of TMUX1044, and another 0.1uF in series at the negative pole from the output PIN to the coaxial interface. In this way, the total capacitance on the negative pole link is 0.05uF, close to 47nF, with a deviation of about 6%. Then I did not add any bias voltage because I was not sure whether adding a bias voltage to the negative pole was feasible. Please help review, can such an application circuit make the coaxial link work correctly? Are there any risks or problems?
