high gain differential dc gain of the opamp

[enea]

calculating power consumption of op amp

Hi,
to calculate the power dissipation in a op-amp where the positive supply voltage is 12.25V and the negative supply voltage is 0V is it ok to multiply the positive supply voltage with the current drawn from it?

Thank you
Enea

 

[Old Nick]

op amp power dissipation calculation

yes, that will give you the DC power consumption of the amp.

 

[millwood]

power dissipation of an op amp with a load

yes, assuming of course there is no load. otherwise, you have to subtract the power dissipation on the load.

Added after 48 seconds:

yes, that will give you the DC power consumption of the amp.

no. that will give you the total power consumption between the amp and the load.

 

[akhilmukund]

Re: Power dissipation of opamp with pos and neg supply

Suppose I am using an opamp as an amplifier with +12V as pos and _12 as neg supply. Consider supply current as 3mA at no load.How will i calculate the power dissipation. Next is the opamp configuration as precision rectifier with same supply and current. Will there be any change in power dissipation among both configuration. Please help to calculate the power dissipation of the IC.

Thanks
akhil