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Patent Searching and Data


Title:
SOLID STATE IMAGING DEVICE AND CLASS AB SUPER SOURCE FOLLOWER
Document Type and Number:
WIPO Patent Application WO/2019/107084
Kind Code:
A1
Abstract:
According to the present invention, an output buffer of a super source follower for driving a reference ramp signal of a parallel single-slope type ADC of a solid state imaging device is configured into a class AB feedback configuration which controls a feedback variable current source by using a signal obtained by amplifying the variation in the current flowing through an amplification transistor by using an amplifier, thus ensuring that the upper limit of a drain voltage of the amplification transistor is not limited by the voltage between the source and gate of the feedback variable current source.

Inventors:
HIGUCHI, Masahiro
Application Number:
JP2018/041107
Publication Date:
June 06, 2019
Filing Date:
November 06, 2018
Export Citation:
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Assignee:
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. (1-61, Shiromi 2-chome Chuo-ku, Osaka-sh, Osaka 07, 〒5406207, JP)
International Classes:
H04N5/378; H03M1/56
Attorney, Agent or Firm:
NII, Hiromori et al. (6F Tanaka Ito Pia Shin-Osaka Bldg., 3-10, Nishi Nakajima 5-chome, Yodogawa-ku, Osaka-cit, Osaka 11, 〒5320011, JP)
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