Inside a Mystery 1980s Filter IC Featuring Switched Capacitors

T2Covered by 1 source · first reported by Hackaday / CNX Software / Liliputing at 11 Oct, 14:00 UTC

Recently [Ken Shirriff] got handed a mystery IC by [CuriousMarc] who had found said IC in a box of various old chips. Labelled only with a date code of the …read more