{"id":1538,"date":"2016-02-08T10:06:18","date_gmt":"2016-02-08T10:06:18","guid":{"rendered":"http:\/\/harvestimaging.com\/blog\/?p=1538"},"modified":"2016-02-08T10:06:18","modified_gmt":"2016-02-08T10:06:18","slug":"isscc-2016-3","status":"publish","type":"post","link":"https:\/\/harvestimaging.com\/blog\/?p=1538","title":{"rendered":"ISSCC 2016 (3)"},"content":{"rendered":"<p><span style=\"font-family: Calibri; font-size: small;\">In this third and last review of the ISSCC, 2 remaining imaging papers are left.<\/span><\/p>\n<p><span style=\"font-family: Calibri; font-size: small;\">The first one comes from NHK, and deals with a 1.1 um 33 Mpixel device,\u00a03D stacked and 3-stage cyclic-based ADC.\u00a0 This 3D stacking is realized by means of direct bonding (in the columns).\u00a0 TSV\u2019s are avoided because they seem to be too expensive, they cost more masks, they consume area and they make a more complicated lay-out needed.\u00a0 The device is fabricated at TSMC (at least TSMC is mentioned in the acknowledgement), and to my knowledge this is the first CMOS image sensor made in 45 nm 1P4M.\u00a0 The logic part on the second level of silicon is made in 65 nm 1P5M technology.<\/span><\/p>\n<p><span style=\"font-family: Calibri; font-size: small;\">The ADC implemented on the chip (by Shizuoka Univ.\/Brookman Technology) is a three stage design, the first two stages are cyclic ADCs (upper 3 bits and middle 6 bits), the last stage is\u00a0 a SAR ADC (3 bits).\u00a0 The sensor can run at full resolution (33 Mpixels !) at a rate of 240 fps, burning 3 Watts.<\/span><\/p>\n<p><span style=\"font-family: Calibri; font-size: small;\">The last paper from the imaging session is the one that was published by FBK, Trento, with two brothers as authors (does not happen that often).\u00a0 The device presented is intended for spacecraft navigation and landing.\u00a0 It contains 64 x 64 pixel digital silicon photomultiplier direct ToF with 100 Mphotons\/s\/pixel background rejection.\u00a0 Every pixel (out of the 64 x 64 array) contains 8 SPADs\u00a0 with extra electronic circuitry.\u00a0 The pixel is designed such that uncorrelated photons or dark current (which still trigger the SPADs)\u00a0do not give an output from the pixel.\u00a0 Only correlated photons give an output.\u00a0 So the background suppression and dark count suppression is more or less based on the statistics of these signals (compared to the ToF signal), and is implemented in the digital logic within every pixel.\u00a0 Fabrication technology is 150 nm CMOS with 6 metal layers.\u00a0 Pixel fill-factor is 26.5 %.<\/span><\/p>\n<p><span style=\"font-family: Calibri; font-size: small;\">Albert, 08-02-2016.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>In this third and last review of the ISSCC, 2 remaining imaging papers are left. The first one comes from NHK, and deals with a 1.1 um 33 Mpixel device,\u00a03D stacked and 3-stage cyclic-based ADC.\u00a0 This 3D stacking is realized by means of direct bonding (in the columns).\u00a0 TSV\u2019s are avoided because they seem to [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1538","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/harvestimaging.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1538","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/harvestimaging.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/harvestimaging.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/harvestimaging.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/harvestimaging.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1538"}],"version-history":[{"count":2,"href":"https:\/\/harvestimaging.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1538\/revisions"}],"predecessor-version":[{"id":1540,"href":"https:\/\/harvestimaging.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1538\/revisions\/1540"}],"wp:attachment":[{"href":"https:\/\/harvestimaging.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1538"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/harvestimaging.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1538"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/harvestimaging.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1538"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}