DIGITAL/ANALOG CONVERSION CIRCUIT, SOLID-STATE IMAGING APPARATUS, CAMERA SYSTEM AND METHOD FOR ANALOG CONVERSION OF DIGITAL CODE

摘要

PROBLEM TO BE SOLVED: To propose a D/A conversion technique which is effective for reducing noise in a lateral streak shape in an image, while avoiding increase in current consumption of a D/A converter.;SOLUTION: A digital/analog (D/A) conversion circuit includes a regulator which outputs a reference voltage from a driver; and an analog voltage output section, to which the reference voltage output from the regulator is supplied, for outputting an analog voltage corresponding to an input code. Then, control is performed for varying the size of the driver inside the regulator, according to the input code. Thus, a gate voltage of the driver is suppressed from being varied by re-regulation, or the like, and the transient response property required for the regulator can be reduced.;COPYRIGHT: (C)2010,JPO&INPIT