Title:
OSCILLATOR CIRCUIT USING COMPARATOR
Document Type and Number:
WIPO Patent Application WO/2019/077890
Kind Code:
A1
Abstract:
The purpose of the present invention is to enable an oscillator circuit using a comparator to control charging/discharging of a mirror capacitance between the gate and the drain of a MOSFET serving as an internal amplifier of a gain unit of the comparator and a gate capacitance of the MOSFET such that even when a control signal of a relatively high frequency is input from the outside, output of the comparator can conform to the control signal. The oscillator circuit 1a uses a comparator having a differential unit 2 and a gain unit 3, and has: a charge/discharge control unit 4 connected to the output of the differential unit, and controlling charging/discharging of a mirror capacitance between the gate and the drain of a MOSFET (N2) serving as an amplifier of the gain unit and a gate capacitance of the MOSFET; and an output control unit 5 for controlling the output of the gain unit.
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| JP6601710 | Oscillator |
| JPH0799806 | [Title of Invention] Input signal converter |
Inventors:
NAKAGOMI KENJI (JP)
Application Number:
PCT/JP2018/032079
Publication Date:
April 25, 2019
Filing Date:
August 30, 2018
Export Citation:
Assignee:
FUJI ELECTRIC CO LTD (JP)
International Classes:
H03K3/023; H03F3/45
Foreign References:
| JPH0494210A | 1992-03-26 | |||
| US20080186101A1 | 2008-08-07 | |||
| JP2018042028A | 2018-03-15 |
Attorney, Agent or Firm:
OKUYAMA, Shoichi et al. (JP)
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