TY - GEN
T1 - Gain Improvement in 4T Structure Detectors using Cascode Configured Pixels
AU - Venter, Johan
N1 - Publisher Copyright:
© 2024 IEEE.
PY - 2024
Y1 - 2024
N2 - In this paper, the normal BJT based pixels in the 4T structure detector was replaced with cascode configured pixels and key parameters were compared. Full detectors designs and performance have been published in literature, however generic mathematical methodology research in readout circuitry is lacking for detector development. Two versions of the cascode configured pixels were used (BJT only based and BJT/MOSFET combination based configurations). Y-parameter representation was used to perform the comparison using techniques previously published. It was found in both modified 4T pixel structure detectors that the transresistance gain improved significantly (from MV/A range to GV/A range). Using these modified mathematical models, a designer can easily design a 4T pixel structure detector for a wider set of circumstances previously not possible which results in more optimised detectors. It was found by replacing the normal pixels with cascode configured pixels that the overall gain is improved significantly due to a reduction in input resistance owing to the cascade configured pixels.
AB - In this paper, the normal BJT based pixels in the 4T structure detector was replaced with cascode configured pixels and key parameters were compared. Full detectors designs and performance have been published in literature, however generic mathematical methodology research in readout circuitry is lacking for detector development. Two versions of the cascode configured pixels were used (BJT only based and BJT/MOSFET combination based configurations). Y-parameter representation was used to perform the comparison using techniques previously published. It was found in both modified 4T pixel structure detectors that the transresistance gain improved significantly (from MV/A range to GV/A range). Using these modified mathematical models, a designer can easily design a 4T pixel structure detector for a wider set of circumstances previously not possible which results in more optimised detectors. It was found by replacing the normal pixels with cascode configured pixels that the overall gain is improved significantly due to a reduction in input resistance owing to the cascade configured pixels.
KW - CMOS image sensors
KW - detectors
KW - integrated circuit modeling
KW - mathematical modeling
KW - phototransistors
UR - http://www.scopus.com/inward/record.url?scp=85187231355&partnerID=8YFLogxK
U2 - 10.1109/SAUPEC60914.2024.10445028
DO - 10.1109/SAUPEC60914.2024.10445028
M3 - Conference contribution
AN - SCOPUS:85187231355
T3 - Proceedings of the 32nd Southern African Universities Power Engineering Conference, SAUPEC 2024
BT - Proceedings of the 32nd Southern African Universities Power Engineering Conference, SAUPEC 2024
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 32nd Southern African Universities Power Engineering Conference, SAUPEC 2024
Y2 - 24 January 2024 through 25 January 2024
ER -