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Patent Searching and Data


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 (#43 Steel House, 8-5Jigok-ro 357beon-gil, Nam-gu,Pohang-si, Gyeongsangbuk-do, 34672, KR)
CHO, Seong Eun (301-1301 Hyndai3cha A.P.T, 31, Dosin-ro,Yeongdeungpo-gu, Seoul, 07376, KR)
Application Number:
KR2018/011806
Publication Date:
July 04, 2019
Filing Date:
October 08, 2018
Export Citation:
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Assignee:
POSTECH ACADEMY-INDUSTRY FOUNDATION (77 Cheongam-ro, Nam-guPohang-si, Gyeongsangbuk-do, 37673, KR)
International Classes:
G06G7/184; H03F3/00; H03H19/00
Foreign References:
KR100794310B12008-01-11
KR20030044277A2003-06-09
KR20170049052A2017-05-10
KR20130059995A2013-06-07
JP2013526745A2013-06-24
Attorney, Agent or Firm:
LEE, Cheol Hee (8 Samsung-ro 100gil, Gangnam-gu, Seoul, 06167, KR)
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