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1. (WO2018041557) DIFFERENTIAL GAIN-STAGE CIRCUIT AND METHOD FOR MULTIPLYING A VOLTAGE

Pub. No.:    WO/2018/041557    International Application No.:    PCT/EP2017/070066
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Wed Aug 09 01:59:59 CEST 2017
IPC: H03F 3/00
G11C 27/02
H03F 3/45
H03M 1/44
Applicants: AMS AG
Inventors: SIEGL, Inge
Title: DIFFERENTIAL GAIN-STAGE CIRCUIT AND METHOD FOR MULTIPLYING A VOLTAGE
Abstract:
A differential gain-stage circuit (10) comprises a positive and a negative input terminal (25, 26), a first capacitor (11) with a first and a second electrode (12, 13), a second capacitor (14) with a first and a second electrode (15, 16), a first amplifier (17) with an input (18) coupled to the first electrode (12) of the first capacitor (11), a second amplifier (19) with an input (20) coupled to the first electrode (15) of the second capacitor (14), a positive output terminal (21) coupled to an output of the first amplifier (17) and a negative output terminal (22) coupled to an output of the second amplifier (19). In a first phase (A), a parallel circuit of the first and the second capacitor (11, 4) is connected to the positive and the negative input terminal (21, 22).