公开(公告)号：US20120217376A1

公开(公告)日：2012-08-30

申请号：US13463007

申请日：2012-05-03

申请人： BRYAN D. ACKLAND ,  Paul W. Latham, II ,  Joshua C. Park

发明人： BRYAN D. ACKLAND ,  Paul W. Latham, II ,  Joshua C. Park

IPC分类号： H01L27/146 ,  H01L31/00

CPC分类号： H04N5/3575 ,  H04N5/3745

摘要： Methods and apparatus are provided for performing multiple correlated double sampling (CDS) operations on an imaging pixel, and in some cases on an array of imaging pixels, during a single integration cycle of the pixel(s). The multiple CDS operations may produce multiple CDS values, which may be processed in combination to produce a resulting value substantially free of various types of noise. The CDS operations may be performed using a CDS circuit including a single-ended charge amplifier having an input capacitor. The charge amplifier may also include a variable capacitance providing a variable gain. The variable capacitance may be provided by a feedback capacitor.

摘要翻译： 提供了用于在像素的单个积分周期期间对成像像素执行多个相关双采样（CDS）操作，并且在一些情况下在成像像素阵列上执行的方法和装置。 多个CDS操作可以产生多个CDS值，其可以组合处理以产生基本上不含各种类型的噪声的结果值。 可以使用包括具有输入电容器的单端电荷放大器的CDS电路来执行CDS操作。 电荷放大器还可以包括提供可变增益的可变电容。 可变电容可由反馈电容器提供。