Differential ring oscillator

Details Differential ring oscillator Differential ring oscillator

2007-08-23

2009-12-15

Mis, David (Department: 2817)

Oscillators

Frequency stabilization

Temperature or current responsive means in circuit

C331S017000, C331S057000, C331S179000

Reexamination Certificate

active

07633351

ABSTRACT:
A differential amplifier circuit includes: a differential transistor pair composed of first and second transistors; a first resistance connected to a junction point of the first and second transistors at one terminal and to a first voltage node at the other terminal; second and third resistances provided between the first and second transistors, respectively, and a second voltage node; and first and second passive circuits respectively connected to the second and third resistances, the load characteristics of the passive circuits changing according to a control signal supplied. A ring oscillator is composed of a plurality of such differential amplifier circuits connected in a loop.

REFERENCES:
patent: 5359301 (1994-10-01), Candage
patent: 5418498 (1995-05-01), DeVito et al.
patent: 5428321 (1995-06-01), Yoshida et al.
patent: 6452458 (2002-09-01), Tanimoto
patent: 7126431 (2006-10-01), Mintchev et al.
patent: 11-112298 (1999-04-01), None

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