Banca de DEFESA: ADSON ALVES FERNANDES

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : ADSON ALVES FERNANDES
DATA : 15/12/2020
HORA: 09:00
LOCAL: https://conferenciaweb.rnp.br/events/defesa-de-mestrado-de-adson-alves-fernandes
TÍTULO:

LOW SATURATION ONSET TRANSISTOR EQUIVALENT NETWORK

PALAVRAS-CHAVES:

MOSFET saturation onset voltage, cascode current mirror, CMOS analog design.

PÁGINAS: 64
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Elétrica
SUBÁREA: Circuitos Elétricos, Magnéticos e Eletrônicos
ESPECIALIDADE: Circuitos Eletrônicos
RESUMO:

This work presents a network of four MOS transistors, which is approximately equivalent to one of its devices, but which presents a lower saturation onset voltage. DC current-voltage characteristics of six network examples and the respective transistors to be replaced, either with n-channel or p-channel devices, are analyzed through simulation in SMASH software using BSIM model for a CMOS 130 nm technology, with 1.2 V power supply. For most cases, the simulation results reveal saturation onset voltage reduction in the order of a few hundreds of millivolts. An assembly with discrete prototypes allows also observing the network operation through the measurement of DC current-voltage characteristics, for conceptual validation. The proposed network is adequate to replace output transistors in cascode current mirrors, so that a low output conductance is achieved, with increased output voltage swing. This assertion is based on results obtained from the simulation of Widlar and cascode mirrors, as well as casdode mirrors with a transistor replaced by the proposed network. These results demonstrate that the modified cascode mirror may preserve other characteristics of the traditional cascode mirror, such as the DC mismatching error and the bandwidth, without a significant increase in dissipated power and at the cost of active area augmentation not above twice.

 

MEMBROS DA BANCA:
Presidente - 287307 - ANA ISABELA ARAUJO CUNHA
Interno - 1554822 - EDSON PINTO SANTANA
Interno - 288125 - ROBSON NUNES DE LIMA
Externo ao Programa - 3030290 - MAICON DEIVID PEREIRA
Externo à Instituição - PAULO MÁRCIO MOREIRA E SILVA