Title:
差動チャージ・ポンプ
Document Type and Number:
Japanese Patent JP7194486
Kind Code:
B2
Abstract:
A differential charge pump circuit for use in a phase-locked loop (PLL) circuit is disclosed. The circuit includes a reference current, two sense amplifiers, a common mode control amplifier, and an h-bridge circuit. The h-bridge circuit is coupled to the reference current and the common mode control amplifier. The reference current drives a first portion of the h-bridge circuit and the common mode control amplifier controls a second portion of the h-bridge circuit. The h-bridge circuit also includes first and second nodes. The circuit controls a voltage at the first node so that it is substantially equal to a voltage at the second node for a plurality of voltages at the second node.
Inventors:
Strom, James
Kesselling, Grant
Wu, Ann, Chen
ToruCa, Scott
Kesselling, Grant
Wu, Ann, Chen
ToruCa, Scott
Application Number:
JP2020526240A
Publication Date:
December 22, 2022
Filing Date:
November 09, 2018
Export Citation:
Assignee:
INTERNATIONAL BUSINESS MACHINES CORPORATION
International Classes:
H03L7/089
Domestic Patent References:
| JP2010035097A | ||||
| JP2016063437A |
Foreign References:
| US8917126 | ||||
| US20170093383 | ||||
| US7902888 |
Attorney, Agent or Firm:
Tadashi Taneichi