A BIPOLAR IMAGE DETECTOR WITH SMART FUNCTIONS

Authors
SHINOHARA M SUGAWA S NAKAMURA Y OHMI T
Citation
M. Shinohara et al., A BIPOLAR IMAGE DETECTOR WITH SMART FUNCTIONS, I.E.E.E. transactions on electron devices, 44(10), 1997, pp. 1769-1776
Citations number
19
Categorie Soggetti
Engineering, Eletrical & Electronic","Physics, Applied
Journal title
I.E.E.E. transactions on electron devices → ACNP
ISSN journal
00189383
Volume
44
Issue
10
Year of publication
1997
Pages
1769 - 1776
Database
ISI
SICI code
0018-9383(1997)44:10<1769:ABIDWS>2.0.ZU;2-N
Abstract
A new type of bipolar image detector has been developed which consists of bipolar sensor cells, bipolar frame memory cells, and signal trans fer circuits. The imager with 100 H x 70 V pixels was designed to dete ct near-infrared LED rays exactly and rapidly, and was fabricated usin g 2-mu m Bi-CMOS process. The device, utilizing operations specific to bipolar cells, amplifies signal charges and cancels noises to have a high signal-to-noise ratio (S/N) immune to a long time hold. It also o ffers several novel functions such as cancellation of external light s ignal, preliminary fast readout, and main readout of a selected part. Equipped with peripheral circuits, the chip is 3.66 x 3.7 mm in size a nd is very suitable for image processing use.