Dynamic Base Current Compensation for Cascaded Bipolar Low Noise Amplifier

Scientific instruments often need an electronic readout system with small input noise, large output signals and small distortion. In order to adapt the newest requirements of an X-ray space mission, several differential low-noise amplifiers have been developed employing diodes as loads, based on a 3...

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Main Authors: Si CHEN, Damien PRȆLE, Fabrice VOISIN, Andrea GOLDWURM
Format: Article
Language:English
Published: IFSA Publishing, S.L. 2019-07-01
Series:Sensors & Transducers
Subjects:
Online Access:https://sensorsportal.com/HTML/DIGEST/july_2019/Vol_235/P_3095.pdf
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author Si CHEN
Damien PRȆLE
Fabrice VOISIN
Andrea GOLDWURM
author_facet Si CHEN
Damien PRȆLE
Fabrice VOISIN
Andrea GOLDWURM
author_sort Si CHEN
collection DOAJ
description Scientific instruments often need an electronic readout system with small input noise, large output signals and small distortion. In order to adapt the newest requirements of an X-ray space mission, several differential low-noise amplifiers have been developed employing diodes as loads, based on a 350 nm SiGe BiCMOS technology. The amplifiers have shown a good performance of AC gain, noise and gain- drift. However, the linearity degrades due to cascaded topology. This work proposes a new design with a dynamic base current compensation system based on the original amplifier topology, appended to the cascaded differential pairs using diodes as loads. The linearity performance is strongly improved according to the dedicated simulation results. The mismatch issue has been further verified by Monte-Carlo simulations.
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spelling doaj.art-25f211432358474db93bbca825841ac82023-07-25T16:43:48ZengIFSA Publishing, S.L.Sensors & Transducers2306-85151726-54792019-07-0123572330Dynamic Base Current Compensation for Cascaded Bipolar Low Noise AmplifierSi CHEN0Damien PRȆLE1Fabrice VOISIN2Andrea GOLDWURM3APC, Univ. Paris Diderot, CNRS/IN2P3, CEA/IrfuAPC, Univ. Paris Diderot, CNRS/IN2P3, CEA/IrfuAPC, Univ. Paris Diderot, CNRS/IN2P3, CEA/IrfuAPC, Univ. Paris Diderot, CNRS/IN2P3, CEA/IrfuScientific instruments often need an electronic readout system with small input noise, large output signals and small distortion. In order to adapt the newest requirements of an X-ray space mission, several differential low-noise amplifiers have been developed employing diodes as loads, based on a 350 nm SiGe BiCMOS technology. The amplifiers have shown a good performance of AC gain, noise and gain- drift. However, the linearity degrades due to cascaded topology. This work proposes a new design with a dynamic base current compensation system based on the original amplifier topology, appended to the cascaded differential pairs using diodes as loads. The linearity performance is strongly improved according to the dedicated simulation results. The mismatch issue has been further verified by Monte-Carlo simulations.https://sensorsportal.com/HTML/DIGEST/july_2019/Vol_235/P_3095.pdfnon-linearitylow-noise amplifierdifferential amplifierbicmos technologyhetero-junction bipolar transistor
spellingShingle Si CHEN
Damien PRȆLE
Fabrice VOISIN
Andrea GOLDWURM
Dynamic Base Current Compensation for Cascaded Bipolar Low Noise Amplifier
Sensors & Transducers
non-linearity
low-noise amplifier
differential amplifier
bicmos technology
hetero-junction bipolar transistor
title Dynamic Base Current Compensation for Cascaded Bipolar Low Noise Amplifier
title_full Dynamic Base Current Compensation for Cascaded Bipolar Low Noise Amplifier
title_fullStr Dynamic Base Current Compensation for Cascaded Bipolar Low Noise Amplifier
title_full_unstemmed Dynamic Base Current Compensation for Cascaded Bipolar Low Noise Amplifier
title_short Dynamic Base Current Compensation for Cascaded Bipolar Low Noise Amplifier
title_sort dynamic base current compensation for cascaded bipolar low noise amplifier
topic non-linearity
low-noise amplifier
differential amplifier
bicmos technology
hetero-junction bipolar transistor
url https://sensorsportal.com/HTML/DIGEST/july_2019/Vol_235/P_3095.pdf
work_keys_str_mv AT sichen dynamicbasecurrentcompensationforcascadedbipolarlownoiseamplifier
AT damienprele dynamicbasecurrentcompensationforcascadedbipolarlownoiseamplifier
AT fabricevoisin dynamicbasecurrentcompensationforcascadedbipolarlownoiseamplifier
AT andreagoldwurm dynamicbasecurrentcompensationforcascadedbipolarlownoiseamplifier