fmr300 Posted March 3, 2007 Report Posted March 3, 2007 Can anybody recommend a good op-amp for:1. 5v operation - single supply2. rail-to-rail output3. gain to ~30db4. DIP pkg5. available nowThanks in advance!-mark Quote
audioguru Posted March 3, 2007 Report Posted March 3, 2007 Hi Mark,Rail-to-rail, low supply voltage opamps are fairly new.New ICs are in surface-mount packages only.You don't say where in the world you are so I don't know what is available for you. Quote
fmr300 Posted March 4, 2007 Author Report Posted March 4, 2007 Thanks for the reply AudiGuru. I'm in the USA, but quite willing to mail-order internationally if you know of something. Need DIP as this is a home-project and kinda hard to solder surf-mount (might do it if I have to though). I realize it may not be available, but if one exists the mfg'r can count on a big sale of about 10 devices here! -mark Quote
audioguru Posted March 4, 2007 Report Posted March 4, 2007 Hi Mark,I use "ordinary" opamps. They aren't rail-to-rail but almost.The MC3317x and MC3407x have a supply voltage down to 3V, an output that goes down to ground and have a much wider bandwidth and much lower distortion than the old LM324 quad and LM358 dual opamps.I have some MC33172 dual opamps in a DIL package but only surface-mount ones are available today.I use TL07x and OPA2134 opamps for audio. Quote
ante Posted March 5, 2007 Report Posted March 5, 2007 I got some MC33172N last week from Farnell and they are DIL Quote
audioguru Posted March 5, 2007 Report Posted March 5, 2007 Hi Ante,Farnell bought Newark in the US and they don't have any MC33172's in a DIL case.Digikey in the US also don't have any.They both have lots of surface-mount ones. Quote
ante Posted March 5, 2007 Report Posted March 5, 2007 This is where I got mine: http://se.farnell.com/jsp/endecaSearch/partDetail.jsp?SKU=204353 Quote
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