ADG5412BF/ADG5413BF Cd(On), Cs(On)

Question

Dear all, 
 Although it is absolutely clear what the values are for Cs (off) and Cd (off), I have some doubts about the ON configuration. I refer for example to the specification relating to the &plusmn; 15 V DUAL-SUPPLY power supply. Cs (off) 13 pF Cd (off) 12 pF Cd (on), Cs (on) 24 pF What does Cd (on), Cs (on) 24 pF mean? That on Cd there are 24 pF and also on Cs there are 24 pF for a total of 48 pF on both pins altogether OR Overall, considering the switch as ideal (Ron zero ohm), is there a total capacity on Cs and Cd (short circuit each other) of 24 pF? Thank you Davide Badoni

davide_bad · Accepted Answer

Thank you Igor, 
 Yours sincerely, 
 Davide Badoni)

ADIApproved · Answer

Hi Davide, 
 
 Cd (On), Cs (On) is the total capacitance measured to ground on either the drain or the source of the switch. Therefore, if the switch is closed, the total capacitance on the switch signal path would be 24 pF. 
 This is not an ideal number, but an actual measurement done in the part. 
 
 Yours sincerely, 
 Igor Ono

Partner Forums

Partner Libraries

ADG5412BF/ADG5413BF Cd(On), Cs(On)