Sony 2.8MP 180fps Prototype

Sony fast sensors family is getting bigger. The new Sony article describes 2.8MP 180fps sensor with about 3.5um pixel pitch. The 3T based sensor uses digital CDS, that is the reset level is stored digitaly and subtracted at the read time. All in all, it's quite a strange prototype in outdated 0.18um process and outmoded 3T technology.