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OPA2544/544 and TINA models

Mike Moore
Prodigy 10 points
Other Parts Discussed in Thread: OPA2544

I am currently simulating the OPA2544/544 as a Howland current source using TINA from the TI site.  The model is correctly holding the current I am expecting at .6A with a 10ohm load.  However, I am checking the total power consumption of the amplifier and I notice both inputs to the amp (+/-12v) are only consuming~ 5.22ma.  This should be the bias current only.  But according to the power required by the load (3.6W) the supply inputs should be consuming more than the above currents.

Is there a model issue or is there something I omitted?

Thanks,

Mike