Comparator circuit for comparing three inputs

Details Comparator circuit for comparing three inputs Comparator circuit for comparing three inputs

2011-07-26

2011-07-26

Tra, Quan (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

C327S067000, C327S071000

Reexamination Certificate

active

07986169

ABSTRACT:
A comparator circuit. A comparator circuit may include a differential amplifying unit to amplify a difference between a voltage at a first node and a voltage at a second node and/or output a resultant voltage, and/or a current source to supply a first bias current to a first node and/or supply a second bias current to a second node. A comparator may include a first bias switch to bias a current flowing from a first node to a ground voltage source, a second bias switch to bias a part of a current flowing from a second node to a ground voltage source, a third bias switch to bias a remaining part of a current flowing from a second node to a ground voltage source, and/or a bias converting unit to supply a third bias current to a second node.

REFERENCES:
patent: 6759887 (2004-07-01), Takahashi et al.
patent: 7358776 (2008-04-01), Matsumoto
patent: 2003/0128056 (2003-07-01), Nilson et al.

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