LOW-VOLTAGE REFERENCE CURRENT CIRCUIT - SHENZHEN GOODIX TECH CO LTD

Title:

LOW-VOLTAGE REFERENCE CURRENT CIRCUIT

Document Type and Number:

WIPO Patent Application WO/2019/227870

Kind Code:

A1

Abstract:

A current reference circuit includes a current source, a first p-channel metal oxide semiconductor (PMOS) transistor having a source coupled to a first supply voltage, a gate, and a drain coupled to the current source, and an n-channel MOS (NMOS) transistor having a drain coupled to a second supply voltage, a gate coupled to the drain of the first PMOS transistor. The current reference circuit also includes a first resistive element having a first terminal coupled to a source of the NMOS transistor and a gate of the first PMOS transistor and a second terminal coupled to a ground potential, a second PMOS transistor having a drain coupled to the first supply voltage, and a second resistive element having a first terminal coupled to the first terminal of the first resistive element and a second terminal coupled to the gate of the second PMOS transistor.

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Inventors:

ABOUDINA MOHAMED (CN)
EMIRA AHMED (CN)
ELWAN HASSAN OSAMA (CN)

Application Number:

PCT/CN2018/116261

Publication Date:

December 05, 2019

Filing Date:

November 19, 2018

Export Citation:

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Assignee:

SHENZHEN GOODIX TECH CO LTD (CN)

International Classes:

G05F3/26

Foreign References:

CN105867518A	2016-08-17
CN104090625A	2014-10-08
US8654600B1	2014-02-18

Other References: