> -----Original Message-----
> From: piclist-bounces@mit.edu 
> [mailto:piclist-bounces@mit.edu] On Behalf Of Bob Axtell
> Sent: Tuesday, January 29, 2008 12:47 PM
> 
> While on the Pericom website, I stumbled across an excellent 
> EMI Appnote (#11) that states categorically:
> 
> "If there are OpAmps in a design, terminate unused opamps in 
> dual or quad packs by grounding the positive input to ground, 
> then connecting the negative input to the output."
> 

Check these references, both written primarily for single-supply op amps:

http://www.maxim-ic.com/appnotes.cfm/an_pk/1957
http://focus.ti.com/lit/an/slod006b/slod006b.pdf see section 17.7.3, page
375 in the PDF. 

GM

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