On Tue, 05 Jun 2018 14:20:40 -0700, John Larkin <jjlarkin@highland_snip_technology.com> wrote:>On Tue, 05 Jun 2018 12:24:56 -0700, Jim Thompson ><To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote: > >>On Tue, 5 Jun 2018 15:07:16 -0400, Phil Hobbs >><pcdhSpamMeSenseless@electrooptical.net> wrote: >> >>[snip] >>>> >>>> The EOL of discretes does keep fast circuit design interesting. GaN >>>> parts are cheap and fast, but don't come in P-channel! >>>> >>>> >>> >>>Yeah, it's like doing chip design circa 1975--the NPNs are 100 times >>>faster than the PNPs. :( >>> >>[snip] >> >>That's stretching history just a tweak... PNP's back then were >>_laterals_ ... 1MHz GBW product, if you were lucky. > >Point contact, Ft's measured in KHz. I think the first Touch-Tone >phones used point contact transistors. > >Later parts were alloy junctions, then grown junctions.IIRC, some car radios were implemented with tubes in RF/F stages but transistors in audio stages.
Well, it happened--the last fast PNP is EOL
Started by ●June 4, 2018
Reply by ●June 6, 20182018-06-06
Reply by ●June 6, 20182018-06-06
On Wednesday, 6 June 2018 07:35:06 UTC+1, upsid...@downunder.com wrote:> On Tue, 05 Jun 2018 14:20:40 -0700, John Larkin > <jjlarkin@highland_snip_technology.com> wrote: > >On Tue, 05 Jun 2018 12:24:56 -0700, Jim Thompson > ><To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote: > > > >>On Tue, 5 Jun 2018 15:07:16 -0400, Phil Hobbs > >><pcdhSpamMeSenseless@electrooptical.net> wrote: > >> > >>[snip] > >>>> > >>>> The EOL of discretes does keep fast circuit design interesting. GaN > >>>> parts are cheap and fast, but don't come in P-channel! > >>>> > >>>> > >>> > >>>Yeah, it's like doing chip design circa 1975--the NPNs are 100 times > >>>faster than the PNPs. :( > >>> > >>[snip] > >> > >>That's stretching history just a tweak... PNP's back then were > >>_laterals_ ... 1MHz GBW product, if you were lucky. > > > >Point contact, Ft's measured in KHz. I think the first Touch-Tone > >phones used point contact transistors. > > > >Later parts were alloy junctions, then grown junctions. > > IIRC, some car radios were implemented with tubes in RF/F stages but > transistors in audio stages.just one transistor for the output. Tubes could do the rest far cheaper. NT
Reply by ●June 6, 20182018-06-06
On Wed, 06 Jun 2018 09:35:01 +0300, upsidedown@downunder.com wrote:>On Tue, 05 Jun 2018 14:20:40 -0700, John Larkin ><jjlarkin@highland_snip_technology.com> wrote: > >>On Tue, 05 Jun 2018 12:24:56 -0700, Jim Thompson >><To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote: >> >>>On Tue, 5 Jun 2018 15:07:16 -0400, Phil Hobbs >>><pcdhSpamMeSenseless@electrooptical.net> wrote: >>> >>>[snip] >>>>> >>>>> The EOL of discretes does keep fast circuit design interesting. GaN >>>>> parts are cheap and fast, but don't come in P-channel! >>>>> >>>>> >>>> >>>>Yeah, it's like doing chip design circa 1975--the NPNs are 100 times >>>>faster than the PNPs. :( >>>> >>>[snip] >>> >>>That's stretching history just a tweak... PNP's back then were >>>_laterals_ ... 1MHz GBW product, if you were lucky. >> >>Point contact, Ft's measured in KHz. I think the first Touch-Tone >>phones used point contact transistors. >> >>Later parts were alloy junctions, then grown junctions. > >IIRC, some car radios were implemented with tubes in RF/F stages but >transistors in audio stages.Yep. My '61 Renault Dauphine had 12V (plate) toobs for RF/Mixer/IF, then transistors for the audio. ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | STV, Queen Creek, AZ 85142 Skype: skypeanalog | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | Thinking outside the box... producing elegant solutions, by understanding what nature is hiding. "It is not in doing what you like, but in liking what you do that is the secret of happiness." -James Barrie
Reply by ●June 6, 20182018-06-06
On 06/05/18 15:07, Phil Hobbs wrote:> On 06/05/2018 01:29 PM, John Larkin wrote: >> On Tue, 5 Jun 2018 10:56:25 -0400, Phil Hobbs >> <pcdhSpamMeSenseless@electrooptical.net> wrote: >> >>> On 06/04/2018 08:40 PM, Jim Thompson wrote: >>>> On Mon, 4 Jun 2018 14:49:00 -0700 (PDT), Lasse Langwadt Christensen >>>> <langwadt@fonz.dk> wrote: >>>> >>>>> mandag den 4. juni 2018 kl. 23.42.01 UTC+2 skrev Jim Thompson: >>>>>> On 4 Jun 2018 14:04:31 -0700, Winfield Hill >>>>>> <hill@rowland.harvard.edu> >>>>>> wrote: >>>>>> >>>>>>> bitrex wrote... >>>>>>>> >>>>>>>> >>>>>>>> Should start a s.e.d. fabless semiconductor company and get them >>>>>>>> made >>>>>>>> again, China will make whatever you like. You could advertise it as >>>>>>>> exactly that "The Last Fast PNP" like the Last of the Mohicans >>>>>>>> or something. >>>>>>> >>>>>>> It's be nice to have it available in a SOT-323 SC70 package. >>>>>> >>>>>> Maybe you and Hobbs should buy a wafer or two? Then, as time moves >>>>>> on, package them to suit the era? >>>>>> >>>>> >>>>> digikey has 18000 in stock, $2,835 for 15000 how many wafers can >>>>> you get for that? >>>>> >>>> >>>> Discrete device wafers are dirt-cheap and low profitability. That's >>>> why the devices are being phased out. Was anyone besides Hobbs buying >>>> them? >>>> >>>> ...Jim Thompson >>>> >>> >>> They sell for a lot more than digital transistors or BCX71s, and can't >>> be much harder to make. Nexperia didn't take NXP's rf transistors or >>> JFETs, so they're getting rid of them. >>> >>> Cheers >>> >>> Phil Hobbs >> >> The EOL of discretes does keep fast circuit design interesting. GaN >> parts are cheap and fast, but don't come in P-channel! >> >> > > Yeah, it's like doing chip design circa 1975--the NPNs are 100 times > faster than the PNPs. :( >I've been digging around for the quickest PNPs still in production. The champs seem to be the old Fairchild Process 65 parts: MMBT3640, MMBT5771, and the discontinued PN4258. They come in at about 700 MHz peak, but they're hard to get. Digikey wants $2 for the MMBT5771! On Semi also has the fairly weirdly named 50A02SS, which is a bigger die (400 mA vs 200), but is in plentiful supply. The bootstrapped MMBT3906 follower worked for the customer, fortunately. Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC / Hobbs ElectroOptics Optics, Electro-optics, Photonics, Analog Electronics Briarcliff Manor NY 10510 http://electrooptical.net http://hobbs-eo.com
Reply by ●June 8, 20182018-06-08
On Tue, 05 Jun 2018 15:01:50 -0700, John Larkin <jjlarkin@highland_snip_technology.com> wrote:>Exotic tubes were fun. Klystrons, thyratrons, PMTs, CRTs, >intensifiers, sniperscope imagers, flashtubes, acorns, high voltage, >weird RF jugs, like that. I wanted an xray tube but never got one.Want an X-ray tube now? I have a dental tube with a blown filament. Won't work, of course, but is sure is pretty. All that polished, non-oxidized copper in there plus the glass envelope that is nicely solarized from long use. Free if you want it. John John DeArmond http://www.neon-john.com http://www.tnduction.com Tellico Plains, Occupied TN See website for email address
Reply by ●June 8, 20182018-06-08
On Tuesday, June 5, 2018 at 9:14:45 PM UTC+2, Jim Thompson wrote:> On Mon, 4 Jun 2018 23:18:16 -0400, "tom" <tmiller11147@verizon.net> > wrote: > > > > >"Jim Thompson" <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote in > >message news:4psbhdloovifoq9s67h0n5s734e374g5vc@4ax.com... > >> On Mon, 04 Jun 2018 18:02:47 -0700, John Larkin > >> <jjlarkin@highland_snip_technology.com> wrote: > >> > >>>On Mon, 04 Jun 2018 17:40:05 -0700, Jim Thompson > >>><To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote: > >>> > >>>>On Mon, 4 Jun 2018 14:49:00 -0700 (PDT), Lasse Langwadt Christensen > >>>><langwadt@fonz.dk> wrote: > >>>> > >>>>>mandag den 4. juni 2018 kl. 23.42.01 UTC+2 skrev Jim Thompson: > >>>>>> On 4 Jun 2018 14:04:31 -0700, Winfield Hill <hill@rowland.harvard.edu> > >>>>>> wrote: > >>>>>> > >>>>>> >bitrex wrote... > >>>>>> >> > >>>>>> >> > >>>>>> >>Should start a s.e.d. fabless semiconductor company and get them > >>>>>> >>made > >>>>>> >>again, China will make whatever you like. You could advertise it as > >>>>>> >>exactly that "The Last Fast PNP" like the Last of the Mohicans or > >>>>>> >>something. > >>>>>> > > >>>>>> > It's be nice to have it available in a SOT-323 SC70 package. > >>>>>> > >>>>>> Maybe you and Hobbs should buy a wafer or two? Then, as time moves > >>>>>> on, package them to suit the era? > >>>>>> > >>>>> > >>>>>digikey has 18000 in stock, $2,835 for 15000 how many wafers can you get > >>>>>for that? > >>>>> > >>>> > >>>>Discrete device wafers are dirt-cheap and low profitability. That's > >>>>why the devices are being phased out. Was anyone besides Hobbs buying > >>>>them? > >>>> > >>>> ...Jim Thompson > >>> > >>>I sure was. And a lot of SOT-89 parts, now gone too. > >>> > >>>If the wafers are cheap, somebody could bake a crate full of them, > >>>jack up the device prices, and do OK. And not annoy a lot of > >>>maybe-future customers. > >> > >> Look into it. Lansdale bought a lot of the rights to Moto chips... > >> still selling some I designed 50+ years ago. > >> > >> ...Jim Thompson > >> -- > > > >Jim, you should post a list of all the chips you designed. > > > >Regards > > > There aren't that many... just 18 standard products between 1962 and > 1970.... and they are listed on my home page, toward the bottom. > > At 1970 I fled the corporate political world (I couldn't deal with all > the political BS at Motorola... I think I quit 4-times just to force > proper engineering decisions) and went to doing virtually all > custom... with a few exceptions, like the LVDS chips for Fairchild. > > (I supported my family at the time... 1970-1977, by running a hybrid > line at Dickson Electronics and writing a lot of the course material > for ICE... Integrated Circuit Engineering.) > > At last count there were ~200 custom chips. I'll have to ponder and > see if I can devise a non-disclosure way of listing those devices... > and what they do functionally... if I can I'll post and announce. > > In the last five years or so I've tired of chip design... there really > isn't anything analog I haven't done before >:-}... so I've hopped > into Behavioral Modeling... easy for me since I've done so much > circuit work (and my math capabilities, at least up thru Calculus, are > superb)... and it's fun, devising functional models which don't > divulge any internal IP... a lot like puzzle solving in reverse ;-) >Jim, I hope you won't be too tired about chip design. We will be asking you very soon to start the ASIC design we discussed. Exiting for me, first ASIC :-) Cheers Klaus
Reply by ●June 8, 20182018-06-08
On Tue, 05 Jun 2018 12:14:32 -0700, Jim Thompson <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote:>On Mon, 4 Jun 2018 23:18:16 -0400, "tom" <tmiller11147@verizon.net> >wrote: > >> >>"Jim Thompson" <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote in >>message news:4psbhdloovifoq9s67h0n5s734e374g5vc@4ax.com... >>> On Mon, 04 Jun 2018 18:02:47 -0700, John Larkin >>> <jjlarkin@highland_snip_technology.com> wrote: >>> >>>>On Mon, 04 Jun 2018 17:40:05 -0700, Jim Thompson >>>><To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote: >>>> >>>>>On Mon, 4 Jun 2018 14:49:00 -0700 (PDT), Lasse Langwadt Christensen >>>>><langwadt@fonz.dk> wrote: >>>>> >>>>>>mandag den 4. juni 2018 kl. 23.42.01 UTC+2 skrev Jim Thompson: >>>>>>> On 4 Jun 2018 14:04:31 -0700, Winfield Hill <hill@rowland.harvard.edu> >>>>>>> wrote: >>>>>>> >>>>>>> >bitrex wrote... >>>>>>> >> >>>>>>> >> >>>>>>> >>Should start a s.e.d. fabless semiconductor company and get them >>>>>>> >>made >>>>>>> >>again, China will make whatever you like. You could advertise it as >>>>>>> >>exactly that "The Last Fast PNP" like the Last of the Mohicans or >>>>>>> >>something. >>>>>>> > >>>>>>> > It's be nice to have it available in a SOT-323 SC70 package. >>>>>>> >>>>>>> Maybe you and Hobbs should buy a wafer or two? Then, as time moves >>>>>>> on, package them to suit the era? >>>>>>> >>>>>> >>>>>>digikey has 18000 in stock, $2,835 for 15000 how many wafers can you get >>>>>>for that? >>>>>> >>>>> >>>>>Discrete device wafers are dirt-cheap and low profitability. That's >>>>>why the devices are being phased out. Was anyone besides Hobbs buying >>>>>them? >>>>> >>>>> ...Jim Thompson >>>> >>>>I sure was. And a lot of SOT-89 parts, now gone too. >>>> >>>>If the wafers are cheap, somebody could bake a crate full of them, >>>>jack up the device prices, and do OK. And not annoy a lot of >>>>maybe-future customers. >>> >>> Look into it. Lansdale bought a lot of the rights to Moto chips... >>> still selling some I designed 50+ years ago. >>> >>> ...Jim Thompson >>> -- >> >>Jim, you should post a list of all the chips you designed. >> >>Regards >> >There aren't that many... just 18 standard products between 1962 and >1970.... and they are listed on my home page, toward the bottom. > >At 1970 I fled the corporate political world (I couldn't deal with all >the political BS at Motorola... I think I quit 4-times just to force >proper engineering decisions) and went to doing virtually all >custom... with a few exceptions, like the LVDS chips for Fairchild. > >(I supported my family at the time... 1970-1977, by running a hybrid >line at Dickson Electronics and writing a lot of the course material >for ICE... Integrated Circuit Engineering.)I hung out a bit with a giant jolly guy in Seattle who was the ICE rep there. He gave me a few of their secret chip analysies, lots of cool color micrographs. Can't remember his name just now. -- John Larkin Highland Technology, Inc picosecond timing precision measurement jlarkin att highlandtechnology dott com http://www.highlandtechnology.com
Reply by ●June 8, 20182018-06-08
On Tue, 5 Jun 2018 22:20:19 -0400, Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> wrote:>On 06/05/18 17:21, Jim Thompson wrote: >> On Tue, 5 Jun 2018 14:15:19 -0700 (PDT), pcdhobbs@gmail.com wrote: >> >>>>> Yeah, it's like doing chip design circa 1975--the NPNs are 100 times >>>>> faster than the PNPs. :( >>> >>>> [snip] >>> >>>> That's stretching history just a tweak... PNP's back then were >>>> _laterals_ ... 1MHz GBW product, if you were lucky. >>> >>> Right, and the NPNs were around 100 MHz. The fastest NPNs I have in my drawer are about 80 GHz, and the fastest PNPs other than the BFT92 are around 600 MHz. So we're back to a 100:1 ratio. >>> >>> Just today I replaced a BFT92 in a customer design with a 2N3906ish cascode pair running at several times the current. >>> >>> Barstids. >>> >>> Phil Hobbs >> >> Should be only about 3:1, based on mobility. Wonder what the gotcha >> is? Or is it that SiGe is only NPN? > >Dunno. Germanium hole mobility is around 2000 cm**2/V/s, which is >higher than electron mobility in silicon, and dramatically higher than >silicon hole mobility. > >I suspect that nobody expected people to design complementary circuits >that fast. I do a certain amount of gigahertz stuff, but lots of the >time I'm using superfast devices in unusual ways, e.g. my fave >pHEMT/SiGe NPN cascode, which I'd claim is the best wideband front end >building block out there. > >BTW CEL have a bunch of newish pHEMTs to replace the late lamented >NE3509 etc. >Good news. We use a lot of NE3508 and NE3509 in some older products, mostly to reset timing ramps. I do that other ways for new designs. -- John Larkin Highland Technology, Inc picosecond timing precision measurement jlarkin att highlandtechnology dott com http://www.highlandtechnology.com
Reply by ●June 8, 20182018-06-08
lørdag den 9. juni 2018 kl. 00.50.50 UTC+2 skrev John Larkin:> On Tue, 05 Jun 2018 12:14:32 -0700, Jim Thompson > <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote: > > >On Mon, 4 Jun 2018 23:18:16 -0400, "tom" <tmiller11147@verizon.net> > >wrote: > > > >> > >>"Jim Thompson" <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote in > >>message news:4psbhdloovifoq9s67h0n5s734e374g5vc@4ax.com... > >>> On Mon, 04 Jun 2018 18:02:47 -0700, John Larkin > >>> <jjlarkin@highland_snip_technology.com> wrote: > >>> > >>>>On Mon, 04 Jun 2018 17:40:05 -0700, Jim Thompson > >>>><To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote: > >>>> > >>>>>On Mon, 4 Jun 2018 14:49:00 -0700 (PDT), Lasse Langwadt Christensen > >>>>><langwadt@fonz.dk> wrote: > >>>>> > >>>>>>mandag den 4. juni 2018 kl. 23.42.01 UTC+2 skrev Jim Thompson: > >>>>>>> On 4 Jun 2018 14:04:31 -0700, Winfield Hill <hill@rowland.harvard.edu> > >>>>>>> wrote: > >>>>>>> > >>>>>>> >bitrex wrote... > >>>>>>> >> > >>>>>>> >> > >>>>>>> >>Should start a s.e.d. fabless semiconductor company and get them > >>>>>>> >>made > >>>>>>> >>again, China will make whatever you like. You could advertise it as > >>>>>>> >>exactly that "The Last Fast PNP" like the Last of the Mohicans or > >>>>>>> >>something. > >>>>>>> > > >>>>>>> > It's be nice to have it available in a SOT-323 SC70 package. > >>>>>>> > >>>>>>> Maybe you and Hobbs should buy a wafer or two? Then, as time moves > >>>>>>> on, package them to suit the era? > >>>>>>> > >>>>>> > >>>>>>digikey has 18000 in stock, $2,835 for 15000 how many wafers can you get > >>>>>>for that? > >>>>>> > >>>>> > >>>>>Discrete device wafers are dirt-cheap and low profitability. That's > >>>>>why the devices are being phased out. Was anyone besides Hobbs buying > >>>>>them? > >>>>> > >>>>> ...Jim Thompson > >>>> > >>>>I sure was. And a lot of SOT-89 parts, now gone too. > >>>> > >>>>If the wafers are cheap, somebody could bake a crate full of them, > >>>>jack up the device prices, and do OK. And not annoy a lot of > >>>>maybe-future customers. > >>> > >>> Look into it. Lansdale bought a lot of the rights to Moto chips... > >>> still selling some I designed 50+ years ago. > >>> > >>> ...Jim Thompson > >>> -- > >> > >>Jim, you should post a list of all the chips you designed. > >> > >>Regards > >> > >There aren't that many... just 18 standard products between 1962 and > >1970.... and they are listed on my home page, toward the bottom. > > > >At 1970 I fled the corporate political world (I couldn't deal with all > >the political BS at Motorola... I think I quit 4-times just to force > >proper engineering decisions) and went to doing virtually all > >custom... with a few exceptions, like the LVDS chips for Fairchild. > > > >(I supported my family at the time... 1970-1977, by running a hybrid > >line at Dickson Electronics and writing a lot of the course material > >for ICE... Integrated Circuit Engineering.) > > I hung out a bit with a giant jolly guy in Seattle who was the ICE rep > there. He gave me a few of their secret chip analysies, lots of cool > color micrographs. Can't remember his name just now.if you like die picture there's lots here, https://zeptobars.com/en/
Reply by ●June 8, 20182018-06-08
On Fri, 08 Jun 2018 15:50:38 -0700, John Larkin <jjlarkin@highland_snip_technology.com> wrote:>On Tue, 05 Jun 2018 12:14:32 -0700, Jim Thompson ><To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote: > >>On Mon, 4 Jun 2018 23:18:16 -0400, "tom" <tmiller11147@verizon.net> >>wrote: >> >>> >>>"Jim Thompson" <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote in >>>message news:4psbhdloovifoq9s67h0n5s734e374g5vc@4ax.com... >>>> On Mon, 04 Jun 2018 18:02:47 -0700, John Larkin >>>> <jjlarkin@highland_snip_technology.com> wrote: >>>> >>>>>On Mon, 04 Jun 2018 17:40:05 -0700, Jim Thompson >>>>><To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote: >>>>> >>>>>>On Mon, 4 Jun 2018 14:49:00 -0700 (PDT), Lasse Langwadt Christensen >>>>>><langwadt@fonz.dk> wrote: >>>>>> >>>>>>>mandag den 4. juni 2018 kl. 23.42.01 UTC+2 skrev Jim Thompson: >>>>>>>> On 4 Jun 2018 14:04:31 -0700, Winfield Hill <hill@rowland.harvard.edu> >>>>>>>> wrote: >>>>>>>> >>>>>>>> >bitrex wrote... >>>>>>>> >> >>>>>>>> >> >>>>>>>> >>Should start a s.e.d. fabless semiconductor company and get them >>>>>>>> >>made >>>>>>>> >>again, China will make whatever you like. You could advertise it as >>>>>>>> >>exactly that "The Last Fast PNP" like the Last of the Mohicans or >>>>>>>> >>something. >>>>>>>> > >>>>>>>> > It's be nice to have it available in a SOT-323 SC70 package. >>>>>>>> >>>>>>>> Maybe you and Hobbs should buy a wafer or two? Then, as time moves >>>>>>>> on, package them to suit the era? >>>>>>>> >>>>>>> >>>>>>>digikey has 18000 in stock, $2,835 for 15000 how many wafers can you get >>>>>>>for that? >>>>>>> >>>>>> >>>>>>Discrete device wafers are dirt-cheap and low profitability. That's >>>>>>why the devices are being phased out. Was anyone besides Hobbs buying >>>>>>them? >>>>>> >>>>>> ...Jim Thompson >>>>> >>>>>I sure was. And a lot of SOT-89 parts, now gone too. >>>>> >>>>>If the wafers are cheap, somebody could bake a crate full of them, >>>>>jack up the device prices, and do OK. And not annoy a lot of >>>>>maybe-future customers. >>>> >>>> Look into it. Lansdale bought a lot of the rights to Moto chips... >>>> still selling some I designed 50+ years ago. >>>> >>>> ...Jim Thompson >>>> -- >>> >>>Jim, you should post a list of all the chips you designed. >>> >>>Regards >>> >>There aren't that many... just 18 standard products between 1962 and >>1970.... and they are listed on my home page, toward the bottom. >> >>At 1970 I fled the corporate political world (I couldn't deal with all >>the political BS at Motorola... I think I quit 4-times just to force >>proper engineering decisions) and went to doing virtually all >>custom... with a few exceptions, like the LVDS chips for Fairchild. >> >>(I supported my family at the time... 1970-1977, by running a hybrid >>line at Dickson Electronics and writing a lot of the course material >>for ICE... Integrated Circuit Engineering.) > >I hung out a bit with a giant jolly guy in Seattle who was the ICE rep >there. He gave me a few of their secret chip analysies, lots of cool >color micrographs. Can't remember his name just now.Yep. Some of my ICE chip tracing analyses are on the S.E.D/Schematics Page of my website. ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | STV, Queen Creek, AZ 85142 Skype: skypeanalog | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | Thinking outside the box... producing elegant solutions, by understanding what nature is hiding. "It is not in doing what you like, but in liking what you do that is the secret of happiness." -James Barrie
