Hi All,
I want to make sure I am calculating power dissipation in an op amp correctly:
So from the OP400AY datasheet:
Iq = 725uA. I will be operating it at +/-15V.
Lets assume I am driving a 10K load per datasheet up to +/-12V
So Pq =725uA *30V = 21.75mW.
Pd = (24)(24)/10K = 57.6mW - (or is it 12*12/10K)
Total = 21.75+57.6 = 79.35mW
Do I then just divide up the power for each rail to get the current for the +15V and -15V rail assuming its sourcing an sinking the same?
So 79.35mW/15 = 5.29mA for each voltage rail?
Thanks!
I want to make sure I am calculating power dissipation in an op amp correctly:
So from the OP400AY datasheet:
Iq = 725uA. I will be operating it at +/-15V.
Lets assume I am driving a 10K load per datasheet up to +/-12V
So Pq =725uA *30V = 21.75mW.
Pd = (24)(24)/10K = 57.6mW - (or is it 12*12/10K)
Total = 21.75+57.6 = 79.35mW
Do I then just divide up the power for each rail to get the current for the +15V and -15V rail assuming its sourcing an sinking the same?
So 79.35mW/15 = 5.29mA for each voltage rail?
Thanks!