Amplifiers – With semiconductor amplifying device – Including differential amplifier
Reexamination Certificate
2007-12-11
2007-12-11
Choe, Henry (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including differential amplifier
C330S296000
Reexamination Certificate
active
11349861
ABSTRACT:
An apparatus for affecting operation of a signal treating device that is provided an operating voltage ranging between an upper voltage limit and a lower voltage limit for treating at least one input signal includes: a respective dynamic bias unit coupled with the signal treating device for each respective input signal of the at least one input signal; and a respective transconductance control unit coupled with each the respective dynamic bias unit. Each respective dynamic bias unit and transconductance control unit cooperates to operate the signal treating device responsive to the at least one input signal approaching at least one of the upper voltage limit and the lower voltage limit.
REFERENCES:
patent: 4668919 (1987-05-01), de Weck
patent: 5576656 (1996-11-01), McClure
patent: 6310512 (2001-10-01), Briskin et al.
patent: 6710654 (2004-03-01), Parkhurst et al.
patent: 2004/0212425 (2004-10-01), Parkhurst
Johan H. Huijsing and Daniel Linebarger; “Low-Voltage Operational Amplifier with Rail-to-Rail Input and Output Ranges;” IEEE Journal of Solid-State Circuits; vol. SC-20, No. 6; Dec. 1985.
Carreto Maria-Flora
Parkhurst Charles
Brady III Wade J.
Choe Henry
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
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