Mitch,
We too use IEEE 315/ANSI 32.2-1976 and supplement IEEE 315A-1986
However we use "U" almost exclusively for any kind of IC. I have
seen "AR" used for op-amps but not "AT" or "G".
Be intresting to see what others do.
Rick
\At 03:30 PM 6/15/98 -0700, you wrote:
>We (internally)have a growing debate going on in regards to reference
>designators. We have (long ago) adopted IEEE 315 as the "bible" for
>schematic symbol and reference designators, but the standard seems
>misleading.
>
>Take for instance OP-AMPs should have "AR" as the designations,
>OSCILLATORS should be "G", ATTENUATORS should be "AT" according
>to how you interpret the standard.
>
>But, aren't these all, in fact, microcircuits ("U") or integrated-circuit
>packages in today's practice? Does anyone else have a better system
>for defining reference designators, per "some" standard? It seems IEEE-
>315/315A should have been out-dated long ago.
>
>Help?
>
>Mitch
>
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Rick Wilson
Senior Designer
HES Houston, TX

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