CMOS-analog IC for controlling camera and camera system using the same

摘要

In a camera controller using a CMOS-analog-IC, a microcomputer, logarithmic compression type distance measuring and photometric circuits, each constituted by a CMOS device having a parasitic bipolar transistor having a p- or n-type well as a base and an n.sup.+ -type layer in the p- type well or p.sup.+ -type layer in the n-type well as an emitter, and the like are arranged on the same chip.