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74LVCV2G66 abnormal charge injection value
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MasterT:
https://www.nexperia.com/products/analog-logic-ics/analog/analog-switches/series/74LVCV2G66.html
DS https://assets.nexperia.com/documents/data-sheet/74LVCV2G66.pdf
page 11 says <0.003 pC, likely a typo. Can't get tech support from nexperia as a hobbyist.
What do you think?
WattsThat:
Cannot speak to your question from a position of actual experience but I found this on AD’s website:
NOTE: Charge injection is usually specified on the data sheet under these matched conditions, i.e., VSOURCE = 0 V. Under these conditions,the charge injection of most switches is usually quite good in the order of 2 to 3 pC max. However the charge injection will increase for other values of VSOURCE, to an extent depending on the individual switch. Many data sheets will show a graph of charge injection as a function of Source voltage.
My swag: Given the NXP part isn’t a specialized exotic switch, comparing it to switches that have the charge injection specified leads me to believe the datasheet units should have been nC rather than pC.
SiliconWizard:
Their 74LVC2G66 datasheet states 2-3 pC:
https://www.nexperia.com/products/analog-logic-ics/analog/analog-switches/series/74LVC2G66.html
Not quite sure about the internal differences of the *74LVCV2G66* (it's supposed to be "Overvoltage tolerant"), but it does look like a typo here indeed. 2-3 fC? Yeah sure.
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