Guidance on CCD interfacing - Page 1
Forum section: electronics / projects

author: new299
author_rank: Regular Contributor
timestamp: November 20, 2014, 08:02:20 am
content: I've been playing with the CCD from an Ixy 60 camera, purely out of interest. I think I've identified the Vout signal from the CCD. However it only seems to change with global illumination. You can see an example of what I'm seeing here:And my notes are here:http://41j.com/blog/2014/11/canon-ixy-60-ccd-experiments-part-2/And here:http://41j.com/blog/2014/11/canon-ixy-60-powershot-sd450/What can I do to further debug this? I'm reasonably sure I've identified the correct signals, but I can't see anything that looks similar to the CCD Vout signals I see in the literature. Might I need to add some kind of termination?I obviously don't have the datasheet for this part, but is there a useful reference I can refer to?I've also posted the question on electronics stack exchange if anyone would prefer answering there:http://electronics.stackexchange.com/questions/139210/guidance-on-ccd-interfacing

author: smgvbest
author_rank: Unknown
timestamp: December 12, 2014, 09:20:56 pm
content: I am very interested in CCD work due to my main hobby of astronomyFrom what I know this cannon uses mainly Sony sensors so you should be able to look at some of the sony sensors for reference.Most CCD but not all sensors work with multiple pixel clocks with volts sometime into the +/- 20v range though newer ones are coming down into the +/- 7v range and will have many of these clocks. which you do seem to have in your readings.the other thing I do notice in there is it may be a quad output sensor in pins 1 & 2One thing to look for the main row/column clocks you should see row clock doing say 2000 pulses for every one pulse of the column clock but in your scope captures your zoomed in too close to see that. you can use the row clock to get a better idea of period being used to shift out the pixels.Check out this device, Its not the one in your camera but simular enough to get you going plus you might be able to do more searches on the sony site to find the actual datasheet on ithttp://www.sony.net/Products/SC-HP/new_pro/october_2013/icx808ala_e.htmlI'm also attaching a datasheet for one I've played withhope this helps some

author: new299
author_rank: Regular Contributor
timestamp: December 13, 2014, 12:32:25 am
content: Thanks, I put it under a microscope and it's an ICX495. Unfortunately the public datasheet for this part is pretty much a marketing document. But I've been looking at datasheets for other devices in the range some one which even have pinouts! Yes, I can see what looks like the column clocks, but I'm still having a hard time figuring out where Vout is!If you have any notes on your work with the other Sony part I'd be really interested in reading them.

author: smgvbest
author_rank: Unknown
timestamp: December 13, 2014, 08:12:37 am
content: I have not been able to yet find the ICX485AQN either but looking at the 2 pager is it an offshoot of the ICX282I found that herehttp://datasheet.elcodis.com/pdf2/107/39/1073996/icx282aq.pdfbut also this flyerhttp://datasheet.elcodis.com/pdf2/107/46/1074677/icx495aqn.pdfshows the ICX624 was it's direct replacement if I read it correctly. Unfortunately though, Consummer CCD sensors are very hard to find datasheets onOn the ICX282 pin 13 is vOUT and if there are in the same line of sensors then that is possibly still true.Another approach might be I see mention of the timing generator by sony in those flyers, maybe you can find information on that one.Oh, I just found thishttp://cncms.com.au/SANYO-SMs/Consumer-Electronics/Digital%20Camera/vpc-s60ex/vpc-s60ex_sm.pdfits a service type manual for a sony camera using the ICX624 and it has a pinout in it if that ICX624 and 495 do use the same pinoutand I found the attached with is from a Cannon SD450 Service manual, if that is your camera check out page 6you can tell as I was typing this I was finding thing so sorry its kind of a mess of a post