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From: Tim Williams on 11 Jan 2010 22:59 "Jim Thompson" <To-Email-Use-The-Envelope-Icon(a)My-Web-Site.com/Snicker> wrote in message news:itqnk5db0ujmq7dol7d8729piisgqj8tgj(a)4ax.com... > Yep, Isn't it amazing how on can make a simple task complicated ;-) > > Hint on the posted circuit: It's a 4-channel sonar, with > time-variable gain front-ends (for Joerg: much like an ultrasound), > electronically-tune-able (calibrated) filters, etc. Potentially interesting circuit, but a bit too specific and large. Flipping through a 40 page PDF isn't very convienient. Most people probably aren't deeply familiar with sonar. Could you be a bit more specific as to the kind of signals a sonar processor works with? What are the advantages to this circuit over other DSPs? (Aha, but that's probably what's inside the VHDL blocks.) Question: what's total transistor count excluding VHDL? How many gates / blocks inside the VHDL? (Or how many gates / transistors does it synthesize to?) Tim -- Deep Friar: a very philosophical monk. Website: http://webpages.charter.net/dawill/tmoranwms
From: Martin Brown on 12 Jan 2010 03:17 Jim Thompson wrote: > Here's a 7-8 year-old chip design... > > www.analog-innovations.com/SED/SampleDesign_2010_01_11_A.pdf > > It was designed for qrk/Mark who posts here from time-to-time. > > In the mean time, flip thru the 40 pages of schematics, muse, amass > questions, and see if you can figure it all out ;-) Looks to me suspiciously like a correlator for chirp radar or sonar with some level of beam steering and tracking filters. Four maybe five sensors. Were they in a 0,1,4,6 configuration to get maximum resolution and no redundancy or equispaced 0,1,2,3 ? Are you sure there is nothing on there that is classified? Regards, Martin Brown
From: qrk on 12 Jan 2010 14:47 On Mon, 11 Jan 2010 19:09:14 -0700, Jim Thompson <To-Email-Use-The-Envelope-Icon(a)My-Web-Site.com/Snicker> wrote: >Here's a 7-8 year-old chip design... > >www.analog-innovations.com/SED/SampleDesign_2010_01_11_A.pdf > >It was designed for qrk/Mark who posts here from time-to-time. > >I'll leave it to Mark to decide what to say about its functions before >I elaborate. (The company, at least the Santa Barbara operations, are >defunct... and it's beyond the NDA limit... but I'll still limit >myself to whatever Mark thinks appropriate.) > >("ToddBlock" is the VHDL-created stuff from another contractor.) > >In the mean time, flip thru the 40 pages of schematics, muse, amass >questions, and see if you can figure it all out ;-) > > ...Jim Thompson The company still exists, even in SB (skeleton crew left). However, they are so mired in upper level management gratification they don't function effectively.
From: Jim Thompson on 12 Jan 2010 14:52 On Tue, 12 Jan 2010 11:47:30 -0800, qrk <SpamTrap(a)spam.net> wrote: >On Mon, 11 Jan 2010 19:09:14 -0700, Jim Thompson ><To-Email-Use-The-Envelope-Icon(a)My-Web-Site.com/Snicker> wrote: > >>Here's a 7-8 year-old chip design... >> >>www.analog-innovations.com/SED/SampleDesign_2010_01_11_A.pdf >> >>It was designed for qrk/Mark who posts here from time-to-time. >> >>I'll leave it to Mark to decide what to say about its functions before >>I elaborate. (The company, at least the Santa Barbara operations, are >>defunct... and it's beyond the NDA limit... but I'll still limit >>myself to whatever Mark thinks appropriate.) >> >>("ToddBlock" is the VHDL-created stuff from another contractor.) >> >>In the mean time, flip thru the 40 pages of schematics, muse, amass >>questions, and see if you can figure it all out ;-) >> >> ...Jim Thompson > >The company still exists, even in SB (skeleton crew left). However, >they are so mired in upper level management gratification they don't >function effectively. Hi, Mark, It was really a shame to see them go so downhill. Do you still have contact with Philippe? ...Jim Thompson -- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.
From: Hammy on 12 Jan 2010 19:34
On Mon, 11 Jan 2010 20:00:11 -0700, Bob Pownall <repownall(a)netscape.net> wrote: >MooseFET wrote: >> >> Page Not Found >> >> The page - www.google.com/www.analog-innovations.com/SED/SampleDesign_2010_01_11_A.pdf >> - does not exist. >> > >Why are you putting www.google.com in front of Jim's link? > >FWIW, just clicking on the link in Jim's original post works fine for me. > >Bob Pownall He's posting from Google Groups. Whenever you click on a link on Google even when doing a search it has www.google.com before the actual URL. Google been doing this for a couple months now. I don't know what the purpose is but even when you click on a link that you get from a Google search it always has www.google.com then the actual address. |