What voltage to supply VL pin on quad cmos switches

Discussion in 'General Electronics Chat' started by Evan Cleary, Nov 27, 2015.

  1. Evan Cleary

    Thread Starter New Member

    Nov 27, 2015
    2
    0
    Im using DG444 quad cmos analog switches for a project, the pin out includes a VL pin for logic reference voltage with the absolute max ratings for the pin stating (GND - 0.3V) to (V+) + 0.3V.

    Which is a little confusing, so if I supply 5V to V+ should I also route this to VL? Or should I tie VL to Gnd?

    Is it just a case of one or the other will do?

    The chip is going to be on a PCB with a ground plane

    Data sheet
    http://www.intersil.com/content/dam/Intersil/documents/dg44/dg444-45.pdf
     
  2. Papabravo

    Expert

    Feb 24, 2006
    10,142
    1,790
    GND and VL should match the voltage levels of the logic you are using to control the switches. V+ and V- can be anywhere withing their specified range.
     
  3. Evan Cleary

    Thread Starter New Member

    Nov 27, 2015
    2
    0
    So 5V to VL it is, thanks Papabravo
     
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