Title:
SWITCHED-CAPACITOR INTEGRATOR CIRCUIT FOR COMPENSATING FOR POLE-ERROR OF INTEGRATOR-TRANSFER FUNCTION
Document Type and Number:
WIPO Patent Application WO/2019/132193
Kind Code:
A1
Abstract:
The present invention relates to a technique for compensating for a pole-error of an integrator-transfer function in a switched-capacitor integrator circuit. The present invention is characterized by improving a signal-to-noise ratio of an output signal without significantly increasing power consumption and the size of a circuit by adding an amplifier having a voltage gain equal to or greater than a certain value to an auto-zeroed non-inverting switched-capacitor integrator circuit. In addition, the present invention is characterized in that when the integrator according to the present invention is applied to a delta-sigma modulator, the signal-to-noise ratio of the output signal is improved without increasing the power consumption by making an integrator-pole value of a Z-domain transfer function of the switched-capacitor integrator circuit be greater than a certain value.
Inventors:
PARK HONG JUNE (KR)
CHO SEONG EUN (KR)
CHO SEONG EUN (KR)
Application Number:
PCT/KR2018/011806
Publication Date:
July 04, 2019
Filing Date:
October 08, 2018
Export Citation:
Assignee:
POSTECH ACAD IND FOUND (KR)
International Classes:
G06G7/184; H03F3/00; H03H19/00
Foreign References:
| KR100794310B1 | 2008-01-11 | |||
| KR20030044277A | 2003-06-09 | |||
| KR20170049052A | 2017-05-10 | |||
| KR20130059995A | 2013-06-07 | |||
| JP2013526745A | 2013-06-24 |
Attorney, Agent or Firm:
LEE, Cheol Hee (KR)
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