内置ADC、BSI、stacked structure都是CIS常规套路,索尼能做到三星、Omnivision也能做到,索尼想要超越对手,自然要在其它方面下功夫,我们能一些零碎的信息中看到索尼这方面的努力。 IMX204是一块索尼于ISSCC 2015披露的CIS,官网产品列表亦有其信息,但却未有市售相机采用该传感器。在指标上IMX204并不突出,Exmor RS,1/1.7英寸,20MP像素,全像素读取速度30fps,其真正过人之处在于其它方面——“New is the DOUBLE single-slope ADC for every column, located on the second layer of silicon. So every pixel can be converted into the digital domain twice and in parallel, resulting in a double sampling of the data. If the timing of the ADCs is done right, a gain of 3 dB can be realized (= to the theoretical calculation). In this configuration of multiple sampling, the resulting noise level is 1.3 electrons for a gain of 27 dB. ”