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ADA4700-1 gets hot

Question asked by K1MGY on Jan 16, 2018
Latest reply on Feb 26, 2018 by KaungWin

ADA4700-1
Schematic below

I am using the ADA4700-1 to provide +-40V DC with a 0 to +2.5V input.  The output of the ADA4700-1 drives a 47K ohm load (40v=<1ma).

The ADA4700-1 is mounted to a DIP adapter board.  I am not able to attach the heat sink pad. 

 

Operating with very little load, I note that the device gets quite hot, and rather rapidly.  Not hot enough that it shuts down, but it's still concerning.

 

Is it expected that the device will get hot, even when a load is not present?

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