Title:
A TRANS IMPEDANCE AMPLIFIER CAPACITANCE ISOLATION STAGE
Document Type and Number:
WIPO Patent Application WO/2020/195752
Kind Code:
A1
Abstract:
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).
Inventors:
LIPKA RONALD JOSEPH
ROUT SAROJ
ROUT SAROJ
Application Number:
PCT/JP2020/010038
Publication Date:
October 01, 2020
Filing Date:
March 09, 2020
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H03F3/45; G01C19/00; G01P15/14
Foreign References:
| US20120286869A1 | 2012-11-15 | |||
| US9804190B2 | 2017-10-31 |
Other References:
DEYOU FANG ET AL: "A Low-Noise Low-Power Preamplifier for Capacitive CMOS-MEMS Gyroscopes", CIRCUITS AND SYSTEMS, 2006. MWSCAS '06. 49TH IEEE INTERNATIONAL MIDWES T SYMPOSIUM ON, IEEE, PI, 1 August 2006 (2006-08-01), pages 270 - 274, XP031113600, ISBN: 978-1-4244-0172-7
BELOUSOV EGOR ET AL: "Low noise amplifier for MEMS gyroscope readout circuit", 2016 IEEE NW RUSSIA YOUNG RESEARCHERS IN ELECTRICAL AND ELECTRONIC ENGINEERING CONFERENCE (EICONRUSNW), IEEE, 2 February 2016 (2016-02-02), pages 495 - 498, XP032889317, DOI: 10.1109/EICONRUSNW.2016.7448230
BELOUSOV EGOR ET AL: "Low noise amplifier for MEMS gyroscope readout circuit", 2016 IEEE NW RUSSIA YOUNG RESEARCHERS IN ELECTRICAL AND ELECTRONIC ENGINEERING CONFERENCE (EICONRUSNW), IEEE, 2 February 2016 (2016-02-02), pages 495 - 498, XP032889317, DOI: 10.1109/EICONRUSNW.2016.7448230
Attorney, Agent or Firm:
KAMATA Kenji et al. (JP)
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