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ADG884 Threshold voltage on IN1/IN2

Question asked by PetrolDave on Jan 6, 2015
Latest reply on Jan 21, 2015 by Stephen_Nugent

I selected the ADG884 to switch analog signals which have a 0-5V range (hence I'm powering it from the same 5V rail) using a logic signal that has a minimum high voltage of 2.5V as the ADG884 data sheet says that when powered from 5V the digital inputs only need 2.0V to switch.

 

So I've had 20 prototypes built, but none of them switch to the A inputs with a logic input of 2.5V (checked and verified using a scope and a DVM) - the B inputs are always routed to the D outputs.

 

So what's the problem? What am I missing/doing wrong?

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