[sdiy] Silly question about dual vs. quad op amps

[James Patchell]

I would say, in general, no.  I personally don't use quad opamps any longer 
but only because the power supply pinout makes PC board layout....messy.  I 
like to have Pin 1 on all ICs pointing the same direction.  This makes 
assembly more straight forward.  I can just glance at a board and know that 
all the IC's have be place in the board correctly.  The quad opamps, like I 
said, make things a lot messier.  I get much cleaner layouts using duals 
and singles.  And two duals just don't take up that much more room.  (Well, 
they do take up a bit more on my boards because they require 4 bypass caps 
rather than 2... :-)

At 01:42 AM 12/5/2005 -0500, Aaron Lanterman wrote:

>If I need four op amps in a circuit, any reason I wouldn't just grab a 
>quad op amp chip?
>
>For instance, all over the OB-Mx board, you'll find TL072s... why use so 
>many of them when you could use fewer TL074s?
>
>- Aaron
>
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>Dr. Aaron Lanterman, Asst. Prof.       Voice:  404-385-2548
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         -Jim
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