Solid state image sensor and electronic apparatus
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United States of America Patent
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Mar 27, 2018
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app pub date -
Aug 6, 2015
filing date -
Aug 19, 2014
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Abstract
The present disclosure relates to a solid state image sensor and an electronic apparatus capable of performing a gain transition at high speed. A ramp generation circuit includes sample hold circuits and ramp generation DACs, the number of which depends on kinds of required gains (for example, two kinds, i.e. a low gain and a high gain). Then, the two sample hold circuits can individually hold gain DAC output voltages at the different gains. This enables a switch to the ramp generation DAC holding the required gain voltage by means of a ramp selection signal. The present disclosure can be applied, for example, to a CMOS solid state image sensor that is used for an imaging device.
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