PROGRAMMABLE AMPLIFIER CIRCUIT CAPABLE OF PROVIDING LARGE OR LARGER RESISTANCE FOR FEEDBACK PATH OF ITS AMPLIFIER

A programmable amplifier circuit (100) includes an amplifier (105), an input capacitor (106) coupled to an input of the amplifier (105), a feedback capacitor (107) coupled to the input of the amplifier (105) and an output of the amplifier (105), and a switched-capacitor resistor circuit (1101). The...

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Bibliographic Details
Main Authors CHANG, Yu-Cheng, WEN, Sung-Han, LIN, Chen-Chien
Format Patent
LanguageEnglish
French
German
Published 06.05.2020
Subjects
AMPLIFIERS
BASIC ELECTRONIC CIRCUITRY
CONTROL OF AMPLIFICATION
ELECTRICITY
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Summary:A programmable amplifier circuit (100) includes an amplifier (105), an input capacitor (106) coupled to an input of the amplifier (105), a feedback capacitor (107) coupled to the input of the amplifier (105) and an output of the amplifier (105), and a switched-capacitor resistor circuit (1101). The switched-capacitor resistor circuit (1101) is coupled between the input of the amplifier (105) and the output of the amplifier (105), and configured for simulating a feedback resistor element to provide a resistance for a feedback path of the amplifier (105) by using at least one capacitor placed between the input of the amplifier (105) and the output of the amplifier (105) to avoid leakage current (s) flowing back to an input of the amplifier (105).
Bibliography:Application Number: EP20170158075