Thats about 14 dollars more than an op-amp and it doesn't give you the full flexibility of the 50 cent op amp.I would get a couple of LM324's to mess around with on some breadboard or strip board - in fact, thats what I am doing right now, some are configured as schmitt triggers, others as audio filters. Its quick and easy unless I am missing something very specific to your application ?Duane Brcarduino.blogspot.com
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