The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Un circuit intégré de pilote LCD comprend plus de 300 amplificateurs tampon sur une seule puce. Les condensateurs de compensation de phase (condensateurs Miller sur puce) pour les amplificateurs mesurent plus de 1000 30 pF et occupent une grande surface de puce. Cet article décrit un amplificateur à deux étages de gain dans lequel un condensateur Miller intégré n'est pas utilisé pour la compensation de phase dans un circuit intégré de pilote LCD. Dans l'amplificateur proposé, la compensation de phase est obtenue uniquement par un zéro nouvellement introduit, formé par la capacité de charge et une résistance de compensation de phase connectée entre la sortie de l'amplificateur et la charge capacitive. Les conceptions de la résistance de compensation de phase et de l'amplificateur avant compensation sont discutées, en considérant une plage de capacité de charge typique. La puce de test a été fabriquée. Le zéro nouvellement introduit a réussi à stabiliser l’amplificateur. La surface de la puce de l'amplificateur a été réduite de 40 à 5 % par rapport à celle signalée précédemment. La consommation de courant de l'amplificateur n'était que de XNUMX µA. Les résultats expérimentaux de la puce de test fabriquée confirment que l'amplificateur proposé est adapté à un circuit intégré de pilote LCD avec une surface de puce plus petite.
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Tetsuro ITAKURA, Hironori MINAMIZAKI, "A Two-Gain-Stage Amplifier without an On-Chip Miller Capacitor in an LCD Driver IC" in IEICE TRANSACTIONS on Fundamentals,
vol. E85-A, no. 8, pp. 1913-1920, August 2002, doi: .
Abstract: An LCD Driver IC includes more than 300 buffer amplifiers on a single chip. The phase compensation capacitors (on-chip Miller capacitors) for the amplifiers are more than 1000 pF and occupy a large chip area. This paper describes a two-gain-stage amplifier in which an on-chip Miller capacitor is not used for phase compensation in an LCD Driver IC. In the proposed amplifier, phase compensation is achieved only by a newly introduced zero, which is formed by the load capacitance and a phase compensation resistor connected between the output of the amplifier and the capacitive load. Designs of the phase compensation resistor and the amplifier before compensation are discussed, considering a typical load capacitance range. The test chip was fabricated. The newly introduced zero successfully stabilized the amplifier. The chip area for the amplifier was reduced by 30-40%, compared with our previously reported one. The current consumption of the amplifier was only 5 µA. The experimental results of the fabricated test chip support that the proposed amplifier is suitable to an LCD driver IC with a smaller chip area.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/e85-a_8_1913/_p
Copier
@ARTICLE{e85-a_8_1913,
author={Tetsuro ITAKURA, Hironori MINAMIZAKI, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={A Two-Gain-Stage Amplifier without an On-Chip Miller Capacitor in an LCD Driver IC},
year={2002},
volume={E85-A},
number={8},
pages={1913-1920},
abstract={An LCD Driver IC includes more than 300 buffer amplifiers on a single chip. The phase compensation capacitors (on-chip Miller capacitors) for the amplifiers are more than 1000 pF and occupy a large chip area. This paper describes a two-gain-stage amplifier in which an on-chip Miller capacitor is not used for phase compensation in an LCD Driver IC. In the proposed amplifier, phase compensation is achieved only by a newly introduced zero, which is formed by the load capacitance and a phase compensation resistor connected between the output of the amplifier and the capacitive load. Designs of the phase compensation resistor and the amplifier before compensation are discussed, considering a typical load capacitance range. The test chip was fabricated. The newly introduced zero successfully stabilized the amplifier. The chip area for the amplifier was reduced by 30-40%, compared with our previously reported one. The current consumption of the amplifier was only 5 µA. The experimental results of the fabricated test chip support that the proposed amplifier is suitable to an LCD driver IC with a smaller chip area.},
keywords={},
doi={},
ISSN={},
month={August},}
Copier
TY - JOUR
TI - A Two-Gain-Stage Amplifier without an On-Chip Miller Capacitor in an LCD Driver IC
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 1913
EP - 1920
AU - Tetsuro ITAKURA
AU - Hironori MINAMIZAKI
PY - 2002
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E85-A
IS - 8
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - August 2002
AB - An LCD Driver IC includes more than 300 buffer amplifiers on a single chip. The phase compensation capacitors (on-chip Miller capacitors) for the amplifiers are more than 1000 pF and occupy a large chip area. This paper describes a two-gain-stage amplifier in which an on-chip Miller capacitor is not used for phase compensation in an LCD Driver IC. In the proposed amplifier, phase compensation is achieved only by a newly introduced zero, which is formed by the load capacitance and a phase compensation resistor connected between the output of the amplifier and the capacitive load. Designs of the phase compensation resistor and the amplifier before compensation are discussed, considering a typical load capacitance range. The test chip was fabricated. The newly introduced zero successfully stabilized the amplifier. The chip area for the amplifier was reduced by 30-40%, compared with our previously reported one. The current consumption of the amplifier was only 5 µA. The experimental results of the fabricated test chip support that the proposed amplifier is suitable to an LCD driver IC with a smaller chip area.
ER -