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Title:
Latch circuit, flip-flop circuit and frequency divider
Document Type and Number:
WIPO Patent Application WO/2012/014013
Kind Code:
A3
Abstract:
The invention pertains to a latch circuit (10) comprising a sensing arrangement (12) with one or more sensing transistors (T 1, T 2 ) adapted to sense an input signal (D, D n ) and to provide a first signal based on the sensed input signal (D, D n ), and a sensing arrangement switch device (16) connected or connectable to a first current source (18), the sensing arrangement switch device (16) being adapted to switch on or off a current to the one or more sensing transistors (T 1, T 2 ) based on a first clock signal (CLK). The latch circuit (10) further comprises a storage arrangement (14) with one or more storage transistors (T 3, T 4 ) adapted to store the first signal and to provide a second signal based on the first signal, and a storage arrangement switching device (20) connected or connectable to the first current source (18) or a second current source, the storage arrangement switching device (20) being adapted to switch on or off a current to the storage transistors (T 3, T 4 ) based on a second clock signal (CLK n ), as well as a tuning arrangement (24) connected or connectable to a temperature sensor (106, 108), the tuning arrangement (24) being adapted to bias a current of the sensing arrangement (12) and/or the storage arrangement (14) based on a temperature signal provided by the temperature sensor (106, 108). The invention also pertains to a flip-flop circuit with two or more latch circuits and a frequency divider (100) comprising at least one latch circuit (10) as described.

Inventors:
TROTTA, Saverio (Thierschstr.44, Munich, 80538, DE)
Application Number:
IB2010/053408
Publication Date:
November 15, 2012
Filing Date:
July 27, 2010
Export Citation:
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Assignee:
FREESCALE SEMICONDUCTOR, INC. (6501 William Cannon Drive West, Austin, Texas, 78735, US)
TROTTA, Saverio (Thierschstr.44, Munich, 80538, DE)
International Classes:
H03K3/00; H03K21/00
Foreign References:
JPH03195113A1991-08-26
US4540900A1985-09-10
US7176736B22007-02-13
JPS63187817A1988-08-03
Other References:
See also references of EP 2599220A2
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