Hi Ali & others, For different opamp circuits and configurations, take a look at:
http://www.national.com/an/AN/AN-31.pdf It also contains an opamp with power booster circuit. Good luck! Elbert Smit. > -----Original Message----- > From: Declan Moriarty [mailto:[EMAIL PROTECTED] > Sent: donderdag 6 november 2003 11:19 > To: Multiple recipients of list CHIPDIR-L > Subject: Re: mid power opamp with short circuit protection > > > On Wed, Nov 05, 2003 at 09:44:19AM -0800, ali marjovi > enlightened us thusly > > Dear List > > I want to make an IO device with a few analog outputs > > each one driving about 40 mA while short circuit > > protection is necessary.(at least when short to Gnd ) > > > > Can any one suggest an opamp or a method? > > Thanks > > Ali > > Right - I'll have a go. > > If you start with an opamp o/p, there are power opamps with > all you require. Presuming these are unsatiisfactory, and you > have a good voltage overhead (I.E. your supplies are high and > you don't require all the voltage swing available) you can > make a supertransistor construcytion in class B to pull up > and down. The crossover is fairly seamless, but not entirely. > > Nobody is going to think about this until we have a lot more > detail. How precise? How big? What supplies in? etc. > -- > > With best Regards, > > > Declan Moriarty. > -- > Author: Declan Moriarty > INET: [EMAIL PROTECTED] > > Fat City Network Services -- 858-538-5051 http://www.fatcity.com > San Diego, California -- Mailing list and web hosting services > --------------------------------------------------------------------- > To REMOVE yourself from this mailing list, send an E-Mail message > to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') > and in the message BODY, include a line containing: UNSUB > CHIPDIR-L (or the name of mailing list you want to be removed > from). You may also send the HELP command for other > information (like subscribing). > -- Author: Elbert Smit INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB CHIPDIR-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
