Hi Javier, I looked everywhere, Thanks. It looks like a match, you beauty.
Cheers Gerald >-- Original Message -- >Date: Mon, 05 Feb 2007 13:15:22 +0100 >From: Javier <[EMAIL PROTECTED]> >To: Discussion of precise time and frequency measurement <time-nuts@febo.com> >Subject: Re: [time-nuts] FEI-565A part >Reply-To: Discussion of precise time and frequency measurement > <time-nuts@febo.com> > > >Hello, > >It is probably a TLC27M24BI quad opamp from Texas Instruments, >http://focus.ti.com/docs/prod/folders/print/tlc27m4b.html > >Regards, > >Javier, EA1CRB > >[EMAIL PROTECTED] wrote: > >>Hi all, >> >>Have decided to get stuck into fault finding my 5650A again. With no replies >>from FEI over the past 2 months, have decided to trace out the PCB the good >>old fasioned way, however the only IC on the 1 inch square PCB PCB has me >>completely lost. >> >>So to the question, has any one ever come across a device marking of 27M4Bl >>or possibly a bad i(I) not an L(l)?? >> >>It's a SMD 14 pin Case751, with Gnd on pin 11 and Vcc on pin 4. This device >>is on the Rubidium lamp PCB and forms part of the Rb thermal control circuit. >> >>I am leaning towards a quad op amp, but it's possible failure makes it very >>difficult to diagnose, it could also be a comparator. >> >>Any suggestions are welcome. >> >>Regards >> >> >>Gerald >> >> >> >> >>_______________________________________________ >>time-nuts mailing list >>time-nuts@febo.com >>https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> >> >> >> > > >_______________________________________________ >time-nuts mailing list >time-nuts@febo.com >https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts _______________________________________________ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts