tag:blogger.com,1999:blog-19092890.post1377843479366598188..comments2024-03-28T17:41:43.970+02:00Comments on Image Sensors World: e2v Announces Gated NIR Imaging Optimized SensorVladimir Koifmanhttp://www.blogger.com/profile/01800020176563544699noreply@blogger.comBlogger10125tag:blogger.com,1999:blog-19092890.post-60618195121867928212016-06-23T16:17:16.501+03:002016-06-23T16:17:16.501+03:00Nobody claims anybody to be a liar. We just raised...Nobody claims anybody to be a liar. We just raised technical questions - which is what this blog is about, no? Technical discussions between imaging people. Technically, those aspects will have impact on the read noise and thus it is interesting to ask under which constraints this performance can be expected. These questions preferably should be answered with numbers and not with criticism...Andreas Süssnoreply@blogger.comtag:blogger.com,1999:blog-19092890.post-90946875306225173932016-06-23T10:34:41.011+03:002016-06-23T10:34:41.011+03:00This technique has been used since a decade or so....This technique has been used since a decade or so. They must have mastered it. E2v is not known as a liar company... Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-19092890.post-10471852544158707992016-06-22T22:44:43.349+03:002016-06-22T22:44:43.349+03:00Desperately no breakthrough on global shutter tech...Desperately no breakthrough on global shutter technologies...Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-19092890.post-74476669183561750722016-06-22T20:29:35.896+03:002016-06-22T20:29:35.896+03:00Not only 1/f, but also FD leakage. So question is ...Not only 1/f, but also FD leakage. So question is - at which frame-times and/or integration times are those 5e-rms achieved?Andreas Süssnoreply@blogger.comtag:blogger.com,1999:blog-19092890.post-34781747111104470862016-06-22T20:24:12.709+03:002016-06-22T20:24:12.709+03:00Why would this sensor be better than SONY IMX250, ...Why would this sensor be better than SONY IMX250, which has twice more resolution?Ivan Onuchinhttps://www.blogger.com/profile/15208170465957096666noreply@blogger.comtag:blogger.com,1999:blog-19092890.post-52111445291152228962016-06-22T17:49:48.977+03:002016-06-22T17:49:48.977+03:00And what about the 1/f noise ? Between the two si...And what about the 1/f noise ? Between the two signals you need for the digital CDS as you suggest, a relative long time is needed and the 1/f noise will become more than important ...Albert Theuwissennoreply@blogger.comtag:blogger.com,1999:blog-19092890.post-9510741506791670502016-06-22T16:01:14.160+03:002016-06-22T16:01:14.160+03:00If you have a motion bright object, the image will...If you have a motion bright object, the image will be amazing.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-19092890.post-36155528709720972252016-06-22T14:52:39.174+03:002016-06-22T14:52:39.174+03:00OK, understood. Thanks for the explanation. What c...OK, understood. Thanks for the explanation. What confused me appeared to be the abbreviation DDS which is also known as "delta-double sampling". This technique, conversely to digital CDS, does not remove reset noise but only offset FPN and will, as explained above, result in a higher noise level. So thanks again for the clarification.Andreas Suessnoreply@blogger.comtag:blogger.com,1999:blog-19092890.post-57092972331405178282016-06-22T14:10:29.762+03:002016-06-22T14:10:29.762+03:00The 18e- rms are true for the GS. It seems to be a...The 18e- rms are true for the GS. It seems to be a 5T pixel cell similar to the ev76c560 sensor. CDS only in RS mode.<br /><br />With two images captures and DDS in an external memory, you can archive 6e- rms.<br /><br />Datasheet says in 6.3 page 9:<br /><br />The Digital Double Sampling (DDS) is a function similar to the Correlated Double Sampling (CDS) but done in the digital domain <br />(after the signal is converted by the ADC) rather than in the analog main (before the ADC). It allows a readout noise reduction<br />especially when the Global Shutter mode is used. The sensor outputs 2 consecutive images: a first image with the all the <br />pixel reference levels followed by an image with all the pixel <br />signal levels. Subtraction product of these two images will generate a low readout noise global shutter image. An off - chip image processing with external memory will be required to perform this subtraction.Dana Diezemannhttp://www.ids-imaging.comnoreply@blogger.comtag:blogger.com,1999:blog-19092890.post-14742717036448260252016-06-22T11:44:01.043+03:002016-06-22T11:44:01.043+03:00Is that a typo? 5e-rms in global shutter with delt...Is that a typo? 5e-rms in global shutter with delta-double sampling? From SNRmax I get ~10ke- FWC. Assuming 1V swing I end up with 16e-rms read noise contribution from reset noise not being cancelled by uncorrelated DDS... I guess the description for 5e-rms and 17e-rms is mixed up?Andreas Süssnoreply@blogger.com