Common-mode control structures and signal converter systems...

Details Common-mode control structures and signal converter systems... Common-mode control structures and signal converter systems...

2008-07-29

2008-07-29

Nguyen, Linh V (Department: 2819)

Amplifiers

With semiconductor amplifying device

Including gain control means

C330S252000, C330S254000, C330S260000, C341S155000, C341S161000

Reexamination Certificate

active

11789858

ABSTRACT:
Control structures are provided to accurately maintain amplifier common-mode levels at the predetermined level of a common-mode reference voltage Vcm. The disclosed control structures provide amplifier feedback along a first feedback path that is configured to provide high gain and low bandwidth to closely maintain amplifier common-mode level at the predetermined level of a common-mode reference voltage Vcm. They also provide amplifier feedback along a second feedback path that is configured to provide wide bandwidth to substantially reduce perturbations of the common-mode level that would have otherwise been induced by input signal transients. In an important amplifier feature, these controls are obtained without use of structures (e.g., capacitors and switching transistors) that use substantial current which reduces amplifier efficiency. Although the disclosed control structures may be used in a variety of systems, they are particularly suited for use in samplers and converter stages of pipelined analog-to-digital converters.

REFERENCES:
patent: 5530444 (1996-06-01), Tice et al.
patent: 5933056 (1999-08-01), Rothenberg
patent: 6172636 (2001-01-01), Murden et al.
patent: 6265941 (2001-07-01), Lopata
patent: 6380806 (2002-04-01), Ang
patent: 6486820 (2002-11-01), Allworth et al.
patent: 6590422 (2003-07-01), Dillon
patent: 6697001 (2004-02-01), Oliaei et al.
patent: 6778010 (2004-08-01), Michalski
patent: 6812784 (2004-11-01), Michalski
patent: 6992611 (2006-01-01), Lili et al.
patent: 6998917 (2006-02-01), Kudo et al.
patent: 7053711 (2006-05-01), Bogner
patent: 7138865 (2006-11-01), Murden et al.
patent: 7142056 (2006-11-01), Blecker et al.
patent: 7167027 (2007-01-01), Matsuo et al.
patent: 7187229 (2007-03-01), Pelly
patent: 7253686 (2007-08-01), Ali
patent: 7265703 (2007-09-01), Sasaki et al.
patent: 7323953 (2008-01-01), Yokoyama et al.
patent: 7358805 (2008-04-01), Shia et al.
patent: 2007/0146064 (2007-06-01), Morie et al.
patent: 2008/0030273 (2008-02-01), Gopinathan et al.
Xia, Bo, et al., “A 10-bit 44-MS/s 20mW Configurable—ADC for a —Reciever”, IEEE Journal of Solid-State Circuits, vol. 41, No. 3, Mar. 2006, pp. 530-539.
Yoshioka, Masato, et al., “10-bit, 125MS/s, 40mW Pipelined ADC in 0.18um CMOS”, Fujitsu Sci. Tech. Journal, 42.2 Apr. 2006, pp. 248-257.

Affiliated with

Also associated with

Rating

Common-mode control structures and signal converter systems... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Common-mode control structures and signal converter systems..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Common-mode control structures and signal converter systems... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3911897