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From: John Larkin on 16 Oct 2009 20:48 ftp://jjlarkin.lmi.net/Board39.jpg This is an 8-layer mixed-signal thing. On the left is a PCIe interface to a Kontron mini-ITX sbc. Upper-right is a cluster of five spread-spectrum switching regulators, all inductor isolated from everything coming and going. I may slice some ground planes around there just to terrify Joerg. The brown pour is where the pipeline ADC is, differential fed from the two SMB connectors to its right. This also has a couple of 128 Ms/s arbs and tons of various digital i/o things and some DDR2 dram to feed the arbs, and a programmable microengine to fire shots. The FPGA is a Spartan 6/45, which we actually have now. The Brat did the layout; not bad for a psychology/softball/beer pong major. John
From: don on 16 Oct 2009 20:57 John Larkin wrote: > ftp://jjlarkin.lmi.net/Board39.jpg > > This is an 8-layer mixed-signal thing. On the left is a PCIe interface > to a Kontron mini-ITX sbc. > > Upper-right is a cluster of five spread-spectrum switching regulators, > all inductor isolated from everything coming and going. I may slice > some ground planes around there just to terrify Joerg. > > The brown pour is where the pipeline ADC is, differential fed from the > two SMB connectors to its right. > > This also has a couple of 128 Ms/s arbs and tons of various digital > i/o things and some DDR2 dram to feed the arbs, and a programmable > microengine to fire shots. The FPGA is a Spartan 6/45, which we > actually have now. > > The Brat did the layout; not bad for a psychology/softball/beer pong > major. > > John > Which CAD program did he use ?? don
From: John Larkin on 16 Oct 2009 21:37 On Fri, 16 Oct 2009 18:57:05 -0600, don <don> wrote: >John Larkin wrote: >> ftp://jjlarkin.lmi.net/Board39.jpg >> >> This is an 8-layer mixed-signal thing. On the left is a PCIe interface >> to a Kontron mini-ITX sbc. >> >> Upper-right is a cluster of five spread-spectrum switching regulators, >> all inductor isolated from everything coming and going. I may slice >> some ground planes around there just to terrify Joerg. >> >> The brown pour is where the pipeline ADC is, differential fed from the >> two SMB connectors to its right. >> >> This also has a couple of 128 Ms/s arbs and tons of various digital >> i/o things and some DDR2 dram to feed the arbs, and a programmable >> microengine to fire shots. The FPGA is a Spartan 6/45, which we >> actually have now. >> >> The Brat did the layout; not bad for a psychology/softball/beer pong >> major. >> >> John >> >Which CAD program did he use ?? > >don She. Boys don't play softball in college. It's PADS, version 5. John
From: Joerg on 16 Oct 2009 21:39 John Larkin wrote: > On Fri, 16 Oct 2009 18:57:05 -0600, don <don> wrote: > >> John Larkin wrote: >>> ftp://jjlarkin.lmi.net/Board39.jpg >>> >>> This is an 8-layer mixed-signal thing. On the left is a PCIe interface >>> to a Kontron mini-ITX sbc. >>> >>> Upper-right is a cluster of five spread-spectrum switching regulators, >>> all inductor isolated from everything coming and going. I may slice >>> some ground planes around there just to terrify Joerg. >>> >>> The brown pour is where the pipeline ADC is, differential fed from the >>> two SMB connectors to its right. >>> >>> This also has a couple of 128 Ms/s arbs and tons of various digital >>> i/o things and some DDR2 dram to feed the arbs, and a programmable >>> microengine to fire shots. The FPGA is a Spartan 6/45, which we >>> actually have now. >>> >>> The Brat did the layout; not bad for a psychology/softball/beer pong >>> major. >>> >>> John >>> >> Which CAD program did he use ?? >> >> don > > She. Boys don't play softball in college. It's PADS, version 5. > Do you think she'll take over the biz some day when you decide to retire? -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
From: a7yvm109gf5d1 on 16 Oct 2009 22:13 On Oct 16, 7:48 pm, John Larkin <jjlar...(a)highNOTlandTHIStechnologyPART.com> wrote: > ftp://jjlarkin.lmi.net/Board39.jpg > > This is an 8-layer mixed-signal thing. On the left is a PCIe interface > to a Kontron mini-ITX sbc. > > Upper-right is a cluster of five spread-spectrum switching regulators, > all inductor isolated from everything coming and going. I may slice > some ground planes around there just to terrify Joerg. > > The brown pour is where the pipeline ADC is, differential fed from the > two SMB connectors to its right. > > This also has a couple of 128 Ms/s arbs and tons of various digital > i/o things and some DDR2 dram to feed the arbs, and a programmable > microengine to fire shots. The FPGA is a Spartan 6/45, which we > actually have now. > > The Brat did the layout; not bad for a psychology/softball/beer pong > major. > > John Sweet, do you use Hyperlynx or whatever it's called to simulate voltage drops on planes?
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