Dual stage active pixel devices and related methods

摘要

Embodiments of dual stage active pixel devices are described herein. Other examples, implementations, and related methods are also disclosed herein.

主权项

1. A device comprising:
a first pixel comprising:
a photosensor sensitive to a photoimpact;an output amplifier stage configured to output a sensor signal of the first pixel; andan intermediate amplifier stage coupled between the photosensor and the output amplifier stage; wherein:
the intermediate amplifier stage comprises:
a first intermediate transistor; anda second intermediate transistor;the first intermediate transistor comprises:
a channel width of the first intermediate transistor;a channel length of the first intermediate transistor;a first terminal of the first intermediate transistor, coupled to an intermediate voltage node;a second terminal of the first intermediate transistor, coupled to an intermediate node; anda control terminal of the first intermediate transistor, coupled to a read signal node;andthe second intermediate transistor comprises:
a channel width of the second intermediate transistor;a channel length of the second intermediate transistor;a first terminal of the second intermediate transistor, coupled to the intermediate node;a second terminal of the second intermediate transistor, coupled to a ground; anda control terminal of the second intermediate transistor, coupled via an input node to the photosensor.