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TSU114: Dual Supplies and QFN-16 EP

michael-imagia
Associate

Hello,

I would like to use the TSU114 in the QFN-16 package and have 2 questions:

1. Can the TSU11x be used with a dual supply?  For example, can I put +1.8V on VCC+ and -1.8V on VCC-?
2. How should I connect the EP of the QFN-16 package?  The datasheet mentions that the EP of the DFN-8 package should be connected to VCC- or left floating, but doesn't say how the EP of the QFN package should be connected.

Thank you for any guidance you can provide.

Michael

1 ACCEPTED SOLUTION

Accepted Solutions
Peter BENSCH
ST Employee

Welcome @michael-imagia, to the community!

  1. Yes, you can supply the TSU114 with dual supply. Single supply is a feature compared to the opamps used in the last millenium, which require dual supply, but of course it works the other way round.
  2. I don't have any official information on this yet, but I strongly assume that the exposed pad is not connected and can then either be connected to VCC- or left floating. To be on the safe side, you can check the connection between the exposed pad and each of the pins to see if a resistance below say 100kohms or a diode path in both directions can be measured there.

Hope that helps?

Regards
/Peter

In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.

View solution in original post

1 REPLY 1
Peter BENSCH
ST Employee

Welcome @michael-imagia, to the community!

  1. Yes, you can supply the TSU114 with dual supply. Single supply is a feature compared to the opamps used in the last millenium, which require dual supply, but of course it works the other way round.
  2. I don't have any official information on this yet, but I strongly assume that the exposed pad is not connected and can then either be connected to VCC- or left floating. To be on the safe side, you can check the connection between the exposed pad and each of the pins to see if a resistance below say 100kohms or a diode path in both directions can be measured there.

Hope that helps?

Regards
/Peter

In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.