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Patent Searching and Data


Title:
CONSTANT TRANSCONDUCTANCE CURRENT SOURCE AND OPERATIONAL AMPLIFIER USING SAME
Document Type and Number:
WIPO Patent Application WO/2018/004074
Kind Code:
A1
Abstract:
A constant transconductance current source according to the present embodiment comprises: a modified cascode circuit of a first-conductive MOS transistor; and a current mirror circuit of a second-conductive MOS transistor, connected to the modified cascode circuit, wherein, in the modified cascode circuit, first and second transistors having connected gate electrodes and third and fourth transistors having connected gate electrodes are cascode-connected, the gate electrodes of the first and second transistors are connected to a drain electrode of the fourth transistor, and a bias voltage is provided to the gate electrodes of the third and fourth transistors.

Inventors:
PARK SUNG MIN (KR)
PARK MIN SEON (KR)
Application Number:
PCT/KR2016/012763
Publication Date:
January 04, 2018
Filing Date:
November 08, 2016
Export Citation:
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Assignee:
EWHA UNIVERSITY-INDUSTRY COLLABORATION FOUND (KR)
International Classes:
H03F3/45; G05F3/26; H03F1/22; H03F1/30
Foreign References:
US7358795B22008-04-15
US6762646B12004-07-13
KR20070076274A2007-07-24
CN101064497A2007-10-31
US20100019806A12010-01-28
Other References:
PARK, MIN-SEON ET AL.: "Two Stage Operational Amplifier of 1.0-V Operation using Improved Constant-gm Current Source Circuit and 0.13-┬Ám CMOS Technology", THE INSTITUTE OF ELECTRONICS AND INFORMATION ENGINEERS SOC CONFERENCE, 28 May 2016 (2016-05-28), pages l-4
Attorney, Agent or Firm:
NAM, Jung Kil (KR)
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