Minimising current in unused op amp
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Posted by on July 4, 2008, 9:25 pm
Please log in for more thread options Thanks all of you - I appreciate it.. I've pretty much settled on a LM2904, with: =94 Input common-mode voltage range includes negative rail =94 Differential input voltage range equal to the power supply voltage =94 Large output voltage swing 0V to (V CC+ -1.5V) Taking into account all your comments, I think I'll turn it into a(n unnecessary) voltage follower (my op amp is only to scale a voltage for an A/D conversion). I'll have the output of the used amp as input into the non-inverting input, and tie the output of this second amp back to the inverting input for a unity gain voltage follower with "No extra current draw involved" (Phil). Thanks everyone, Cheers, Gus | ||||||||||||||||||||||
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