Title:
SOLID-STATE IMAGING APPARATUS
Document Type and Number:
Japanese Patent JP2018088648
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a solid-state imaging apparatus which enables achievement of a high-speed of an A/D converter.SOLUTION: A solid-state imaging apparatus comprises a successive comparison type A/D converter for performing analog-to-digital conversion of an analog pixel signal, and includes: a D/A converter for converting a digital reference signal into an analog reference signal; a comparator; and a successive comparison register operating on the basis of a result of comparison by the comparator, and generating a digital reference signal so that the analog reference signal approximates the analog pixel signal. The D/A converter includes: a split capacitor; a plurality of first capacitors with one electrodes connected to an output node; a plurality of second capacitors connected to the other electrodes of the plurality of first capacitors; a switch array connected to the other electrodes of the first and second capacitors, and generating the analog reference signal at the output node; a third capacitor connected to the other electrode of the split capacitor; and a multiplexer connected to the other electrode of the third capacitor, and generating the analog reference signal at the output node.SELECTED DRAWING: Figure 6
Inventors:
MATSUMOTO OSAMU
MORISHITA GEN
MORISHITA GEN
Application Number:
JP2016231717A
Publication Date:
June 07, 2018
Filing Date:
November 29, 2016
Export Citation:
Assignee:
RENESAS ELECTRONICS CORP
International Classes:
H03M1/46
Attorney, Agent or Firm:
Fukami patent office