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.
Patent No.:
Date of Patent:
Jul. 30, 2019
Filed:
Dec. 17, 2017
Hangzhou Hongxin Microelectronics Technology Co., Ltd., Hangzhou, CN;
Hehong Zou, Hangzhou, CN;
HANGZHOU HONGXIN MICROELECTRONICS TECHNOLOGY CO., LTD., Hangzhou, CN;
Abstract
The present disclosure provides a trans-impedance amplifier, comprising: an inverting amplifier circuit, having an input end and an output end. The input end is coupled to an optical diode and is used for accessing an input voltage signal, and the output end is used for outputting an amplified voltage signal. The inverting amplifier circuit comprises at least three sequentially-connected amplifier units. Each of the amplifier units comprises two mutually-coupled N-type transistors, wherein one N-type transistor is used for receiving an input voltage, and the other N-type transistor is used for receiving a DC voltage signal. A common connection end of the two N-type transistors is used for outputting an amplified voltage signal, and the N-type transistor used for receiving the DC voltage signal adopts a native NFET. The trans-impedance amplifier further comprises a feedback resistor coupled to the input end and the output end of the inverting amplifier circuit.