On Mon, 6 Dec 2004 15:42:51 -0800 (PST), you wrote: >Anyone know of a 50V or 60V quad op amp that has the same pin out as an >LM324? Some of the TI TLE range got to 40V but above that you are getting into expensive specialist territory, and may find it a lot cheaper to use an external output driver for the HV _______________________________________________ http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist