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

[Tim Parkhurst]

On 12/4/05, Aaron Lanterman <lanterma at ece.gatech.edu> 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
>
>
> -----------------------------------------------------------------------------
>
> Dr. Aaron Lanterman, Asst. Prof.       Voice:  404-385-2548
> School of Electrical and Comp. Eng.    Fax:    404-894-8363
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I asked the same question a while back. Basically, there are two reasons.
One: to avoid coupling that might occur between amps in the same package
with high voltage and/or high current swings. Two: There are many cases
where using two duals instead of a single quad makes the PCB routing easier.


Tim (although I can't say I've ever seen an OB-Mx board) Servo
--
"Imagination is more important than knowledge." - Albert Einstein
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