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1. WO2020195752 - A TRANS IMPEDANCE AMPLIFIER CAPACITANCE ISOLATION STAGE

Publication Number WO/2020/195752
Publication Date 01.10.2020
International Application No. PCT/JP2020/010038
International Filing Date 09.03.2020
IPC
H03F 3/45 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
3Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
45Differential amplifiers
G01P 15/14 2013.01
GPHYSICS
01MEASURING; TESTING
PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION OR SHOCK; INDICATING PRESENCE OR ABSENCE OF MOVEMENT;  INDICATING DIRECTION OF MOVEMENT 
15Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
14by making use of gyroscopes
G01C 19/00 2013.01
GPHYSICS
01MEASURING; TESTING
CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
19Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
CPC
G01C 19/5712
GPHYSICS
01MEASURING; TESTING
CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
19Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
56Turn-sensitive devices using vibrating masses, e.g. vibratory angular rate sensors based on Coriolis forces
5705using masses driven in reciprocating rotary motion about an axis
5712the devices involving a micromechanical structure
G01C 19/5776
GPHYSICS
01MEASURING; TESTING
CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
19Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
56Turn-sensitive devices using vibrating masses, e.g. vibratory angular rate sensors based on Coriolis forces
5776Signal processing not specific to any of the devices covered by groups G01C19/5607 - G01C19/5719
H03F 1/086
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
1Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
08Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
083in transistor amplifiers
086with FET's
H03F 2200/228
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
2200Indexing scheme relating to amplifiers
228A measuring circuit being coupled to the input of an amplifier
H03F 2200/261
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
2200Indexing scheme relating to amplifiers
261Amplifier which being suitable for instrumentation applications
H03F 2203/45136
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
2203Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
45Indexing scheme relating to differential amplifiers
45136One differential amplifier in IC-block form being shown
Applicants
  • PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. [JP]/[JP]
Inventors
  • LIPKA Ronald Joseph
  • ROUT Saroj
Agents
  • KAMATA Kenji
  • NOMURA Koichi
Priority Data
16/361,67522.03.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) A TRANS IMPEDANCE AMPLIFIER CAPACITANCE ISOLATION STAGE
(FR) ÉTAGE D'ISOLATION DE CAPACITÉ D'AMPLIFICATEUR À TRANSIMPÉDANCE
Abstract
(EN)
An electronic circuit (8) for a micro-electro-mechanical system gyroscope (7) is disclosed. The electronic circuit (8) includes a current buffer (1), a transimpedance amplifier (2) coupled with the current buffer (1), and a plurality of transistors (5). An inverting input terminal of the current buffer (1) and a non-inverting input terminal of the current buffer (1) are connected with a plurality of first resistors (3). The inverting input terminal of the current buffer (1) is connected with a source of one of the plurality of transistors (5 ), and the non- inverting input terminal of the current buffer (1) is connected with a source of another one of the plurality of transistors (M SF ). The plurality of first resistors (3 ) are connected to a ground. The current buffer (1) is configured to isolate a load in the micro-electronic- mechanical systems gyroscope (7) from the transimpedance amplifier (2).
(FR)
L'invention concerne un circuit électronique (8) pour un gyroscope de système micro-électro-mécanique (7). Le circuit électronique (8) comprend un tampon de courant (1), un amplificateur de transimpédance (2) couplé au tampon de courant (1) et une pluralité de transistors (5). Une borne d'entrée inverseuse du tampon de courant (1) et une borne d'entrée non inverseuse du tampon de courant (1) sont connectées à une pluralité de premières résistances (3). La borne d'entrée inverseuse du tampon de courant (1) est connectée à une source de l'un de la pluralité de transistors (5) et la borne d'entrée non inverseuse du tampon de courant (1) est connectée à une source d'un autre transistor de la pluralité de transistors (M SF). La pluralité de premières résistances (3) sont connectées à une masse. Le tampon de courant (1) est configuré pour isoler une charge dans le gyroscope du système micro-électronique-mécanique (7) à par rapport à l'amplificateur de transimpédance (2).
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