October 20, 2016
National Semiconductor LM330 - first LDO (1976) : weekend die-shotLM330/LM2930 (LM130) is the first LDO linear regulator manufactured by National Semiconductor since 1976.
Die size 1723x1490 µm.
On a different die one can see funny litho/processing defect over power transistor (especially at full resolution):
Wafer also had few test chips:
That was on 3" wafer:
Thanks for the original wafers to Bob Miller, one of the designers of this chip.