The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Feb. 25, 2020

Filed:

Oct. 18, 2018
Applicant:

Mediatek Inc., Hsin-Chu, TW;

Inventors:

Sung-Han Wen, Hsin-Chu, TW;

Chuan-Hung Hsiao, Hsin-Chu, TW;

Assignee:

MEDIATEK INC., Hsin-Chu, TW;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 11/04 (2006.01); H03L 7/093 (2006.01); G05F 3/20 (2006.01); G05F 3/26 (2006.01); G05F 3/30 (2006.01);
U.S. Cl.
CPC ...
H03H 11/04 (2013.01); G05F 3/20 (2013.01); H03L 7/093 (2013.01); G05F 3/262 (2013.01); G05F 3/30 (2013.01);
Abstract

A circuit for low-noise reference signal generation comprising a filter unit and a functional unit. The filter unit comprises a transistor and an energy storage component. The transistor comprises a first node, a second node, a control node and a body node. The first node is configured to receive an input signal. The second node is configured to output a filtered signal. The control node is configured to receive a control signal for controlling the transistor to turn on or off. The body node is configured to couple to the input signal, the output signal or a signal which is similar to the input signal or the output signal. The energy storage component is coupled to the second node of the transistor. The functional unit is coupled to the second node of the transistor and the energy storage component. The functional unit has high input impedance.


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