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ADG5436F to switch between GND and VSS only

Question asked by BenvdBergh on Nov 27, 2015
Latest reply on Dec 4, 2015 by Davidforde

Dear forum members,

We would like to use a ADG5436F to control a TriQuint TGS2353-2-SM. (please see attached the datasheet for the TGS2353-2-SM)

The control inputs on the TGS2353-2-SM calls for a signal swing between GND and -40V.

The particular application is not sensitive to switching speed of the TGS2353, 1us is more than adequate.

The current through the switching element of the ADG5436F will typically be -.250uA to +100uA.

 

The idea is to use the ADG5436F configured in the following two ways.

 

1) VDD connected to GND (0V) and VSS to -40V, D1 connected to the control input of the TGS2353 (VC1 pin)

S1A connected to GND (0V) and S1B connected to -40V.

The ADG5436F's control will be 3.3V.

 

Question:

Will the ADG5436F function with what is only a negative supply?

 

Or

2) VDD connected (5V) and VSS to -40V, D1 connected to the control input of the TGS2353 (VC1 pin)

S1A connected to GND (0V) and S1B connected to -40V.

The ADG5436F's control will be 3.3V.

 

Question:

Will the ADG5436F function with what is essentially a asymmetric supply of +5V and -40V?

Or perhaps we have to up the positive rail to >8V.

 

Thank you

Regards 

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