op-amp quiescent current

Thread Starter

Blackbull

Joined Jul 26, 2008
70
Could anyone tell me if an op-amp draws current when there is no input or output? Do the batteries need to be disconected when not in use? Many thanks.
 

beenthere

Joined Apr 20, 2004
15,808
Yes, they do - the quiescent current for each device is on its data sheet. Disconnecting the battery is the only way to achieve zero current draw.
 

Thread Starter

Blackbull

Joined Jul 26, 2008
70
Thanks beenthere, I did look at the data sheet but couldn't find it. What a brill site this is.
 

Audioguru

Joined Dec 20, 2007
11,251
The datasheet tells you what is Icc:
Supply Current (each amplifier) 1.4mA typical and 2.5mA max.
If the opamp is doing any work then add the working current.
 
Top