Hi Brooke, Having done this a lot, I'd agree with Randy, conventional solder lots of flux (I use the liquid rework type but the pens OK) and SoderWick as you call it over there. You can get ready made SM to DIL adaptors but they are expensive, Roth Electronik make a series of PCB's for prototyping that have various footprints brought out to 0.1" spaced holes. You just break off the one you need. They have generous pad sizes. See http://uk.farnell.com/jsp/endecaSearch/partDetail.jsp?SKU=1172124&N=401 Newark are Farnell's USA company.
Regards, Robert G8RPI. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Brooks Shera Sent: 30 June 2006 22:54 To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Linear Interpolator Inspired by Ulrich's lead regarding the high resolution TDC, I asked the Acam US rep for a quote on the TDC GP2. As Ulrich indicated they are not too expensive: $28 quantity 1, $26 quantity 10. Sounds great. Temperature coefficient isn't quoted but it will be considerable - presumably can be corrected in software. For me the catch seems to be that they are packaged in a QFN-32. The pin spacing is 500 microns and the open space between the solder pads is only 200 microns. Perhaps I am too timid but this sounds like trouble for manual soldering, that's assuming the low cost PCB suppliers could make the appropriate solder mask. Any comments from the experienced? Acam makes a dandy evaluation board, the ATMD-GPX, but for this they want $2298. Oh well. Brooks ----- Original Message ----- From: "Ulrich Bangert" <[EMAIL PROTECTED]> To: "'Discussion of precise time and frequency measurement'" <[email protected]>; "'Magnus Danielson'" <[EMAIL PROTECTED]> Sent: Thursday, June 29, 2006 11:41 Subject: Re: [time-nuts] Linear Interpolator Hi Stephan, if you need a ps resolution time interval counter for use in a project of your own, why not simply go out and buy you one? For example here http://www.acam.de/index.php?id=105 They are not that expensive because they are made to be married with cheap sensors. _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
