WO2019045817 PROGRAMMABLE GAIN AMPLIFIER

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Publication Number WO/2019/045817

Publication Date 07.03.2019

International Application No. PCT/US2018/036042

International Filing Date 05.06.2018

IPC

CPC

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Applicants

AUCMOS TECHNOLOGIES USA, INC. [US]/[US]

Inventors

LU, Teh-Shang

Agents

KWOK, Edward
VLP LAW GROUP, LLP

Priority Data

15/693,097

31.08.2017

Publication Language English (en)

Filing Language English (EN)

Designated States

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Title

(EN) PROGRAMMABLE GAIN AMPLIFIER

(FR) AMPLIFICATEUR DE GAIN PROGRAMMABLE

Abstract

(EN) A programmable gain amplifier may include: (a) a differential amplifier having first and second input terminals and first and second output terminals, the differential amplifier providing an output signal of the programmable gain amplifier across the first and second output terminals of the differential amplifier; (b) a first set of one or more resistors coupling the first output terminal of the differential amplifier to the first input terminal of the differential amplifier; (c) a second set of one or more resistors coupling the first input terminal of the differential amplifier to a first input terminal of the programmable gain amplifier; and (d) a first set of one or more switches each connected in parallel with one or more resistors in the first or second set of resistors. The first set of switches may include two or more individually programmable switches. Each of the switches may be implemented by an input-signal independent switch disclosed herein.

(FR) L'invention concerne un amplificateur de gain programmable qui peut comprendre : (a) un amplificateur différentiel ayant des première et seconde bornes d'entrée et des première et seconde bornes de sortie, l'amplificateur différentiel fournissant un signal de sortie de l'amplificateur de gain programmable à travers les première et seconde bornes de sortie de l'amplificateur différentiel ; (b) un premier ensemble d'une ou plusieurs résistances couplant la première borne de sortie de l'amplificateur différentiel à la première borne d'entrée de l'amplificateur différentiel ; (c) un second ensemble d'une ou plusieurs résistances couplant la première borne d'entrée de l'amplificateur différentiel à une première borne d'entrée de l'amplificateur de gain programmable ; et (d) un premier ensemble d'un ou de plusieurs commutateurs connectés chacun en parallèle avec une ou plusieurs résistances dans le premier ou le second ensemble de résistances. Le premier ensemble de commutateurs peut comprendre deux commutateurs programmables individuellement ou plus. Chacun des commutateurs peut être mis en œuvre par un commutateur indépendant du signal d'entrée décrit présentement.

H	ELECTRICITY
03	BASIC ELECTRONIC CIRCUITRY
F	AMPLIFIERS
3	Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
45	Differential amplifiers

H	ELECTRICITY
03	BASIC ELECTRONIC CIRCUITRY
F	AMPLIFIERS
3	Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
45	Differential amplifiers

H	ELECTRICITY
03	BASIC ELECTRONIC CIRCUITRY
F	AMPLIFIERS
2203	Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
45	Indexing scheme relating to differential amplifiers
45022	One or more added resistors to the amplifying transistors in the differential amplifier

H	ELECTRICITY
03	BASIC ELECTRONIC CIRCUITRY
F	AMPLIFIERS
2203	Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
45	Indexing scheme relating to differential amplifiers
45044	One or more switches are opened or closed to balance the dif amp to reduce the offset of the dif amp

H	ELECTRICITY
03	BASIC ELECTRONIC CIRCUITRY
F	AMPLIFIERS
2203	Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
45	Indexing scheme relating to differential amplifiers
45522	the FBC comprising one or more potentiometers

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1. WO2019045817 - PROGRAMMABLE GAIN AMPLIFIER

H	ELECTRICITY
03	BASIC ELECTRONIC CIRCUITRY
G	CONTROL OF AMPLIFICATION
1	Details of arrangements for controlling amplification
0005	Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
0088	using discontinuously variable devices, e.g. switch-operated

H	ELECTRICITY
03	BASIC ELECTRONIC CIRCUITRY
G	CONTROL OF AMPLIFICATION
3	Gain control in amplifiers or frequency changers ; without distortion of the input signal
001	Digital control of analog signals