[sdiy] books on analog MOS IC design ?

[Grant Richter]

Here is a question I have ALWAYS wanted to ask.

Why, in a quad op-amp package, is pin 4 positive and pin 11 negative?

Of course in a dual op-amp, pin 8 is positive and pin 4 is negative.

Standard board layout procedure is to have all pin 1 in same orientation.

This means that when routing quad and dual op-amps in a row, you need to
flip traces and it screws up your bypass cap layout.

There must be a good reason for all the troubles it's caused. Please ask the
old guys for me.

Thank you!


> I'm at ADI in the precision op-amp product line
> (basically PMI). We're still doing a lot of bipolar
> but also a lot of CMOS. The 'older' guys (Derek
> Bowers/Peter Ohlon/Paul Henneuse) tend to do most of
> the bipolar amps and us younger ones get the CMOS.
>