Estudo de topologias de circuitos de controle para redução da degradação do sinal de saída do circuito de pixel 3T APS

Abstract

This work presents a study on topologies of control circuits to reduce the degradation of the output signal of the 3T-APS pixel circuit (Active Three Sensor Transistors), due to the resistivity of the reset transistor that is located inside the pixel. The work is divided into three scenarios: studying the discharge of a pixel using ideal sources of power and control signals, studying the discharge of a pixel using transistorized electronic circuits that generate the control signals and voltage divider circuits that generate minimum levels reference and, finally, the presentation of a new control circuit topology, including evaluation and comparison of the pixel discharge of the proposed topology with the existing one. The possible deleterious effects that may occur due to the temperature variation on the pixel will also be investigated, as evidenced by the Monte Carlo tool.