> > > I guess you didn't mean LM324 as it's not rail to rail. How about the > LMV324? I have > a feeling it may be among the cheapest. Data sheet says ouptut swing is > V+-10mV > and V-+65mV with 10k load, so perhaps it may meet your spec at a higher > load > resistance? I read an article by Bob Pease, talking about op-amp selection, where he said "we have lots of opamps, and ALL of them are better than the LM324". :) The LM324 has nasty crossover distortion too, unless you pull the output up with a couple mA. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist