Low voltage broadband line driver

Details Low voltage broadband line driver Low voltage broadband line driver

2006-01-10

2006-01-10

Tran, Sinh (Department: 2646)

Telephonic communications

Subscriber line or transmission line interface

C379S398000, C379S394000

Reexamination Certificate

active

06985578

ABSTRACT:
The present invention relates to broadband line drivers, comprising a cascade connection of an operational amplifier (A) and a transformer (T), which can be integrated on chip. This is obtained by putting the transformer (T) in a feedback loop between the output and the input of the operational amplifier (A).

REFERENCES:
patent: 5038375 (1991-08-01), Sinberg
patent: 6198818 (2001-03-01), Bingel
patent: 0 901 221 (1999-03-01), None
patent: WO 99/39433 (1999-08-01), None
B. Schweber, “Analog Front Ends Bridge the XDSL-to-Real-World Chasm”, EDN Electrical Design News, Massachusetts, US, vol. 44, No. 7, Apr. 1, 1999, pp. 48, 50, 52, 54, 56, 58, 60, 62, 64, XP000899059.
E. Nash, “Line-Driver Design for Broadband Communications Applications”, Electronic Design, us, Cleveland, Ohio, vol., 45, No. 27, Dec. 1, 1997, pp. 81-82, 84, 86, 88 , XP000755760.
M. Steffes et al, Optimizing Performance in an XDSL Line Driver, Electronic Design, Cleveland, Ohio, US, vol., 47, No. 8, Apr. 19, 1999, pp. 44, 46, 48, 52, 54, 56, 58 XP000893613.
E. Nash, Saving Dynamic Power in HDSL Line Driving Applications, Electronic Design, US Cleveland Ohio, vol., 45, No. 12, Jun. 9, 1997, p. 88, 90, 92, XP000731500.

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