Telephonic communications – Subscriber line or transmission line interface – For line length compensation
Reexamination Certificate
2005-06-07
2005-06-07
Kuntz, Curtis (Department: 2643)
Telephonic communications
Subscriber line or transmission line interface
For line length compensation
C379S394000, C379S395000
Reexamination Certificate
active
06904145
ABSTRACT:
The asymmetric digital subscriber line receive channel includes: first and second external resistors20and22coupled to a telephone line24and26; a coarse programmable gain amplifier CPGA formed in a low voltage process having inputs coupled to the first and second external resistors20and22; and a fine programmable gain amplifier PGA1coupled to an output of the coarse programmable gain amplifier CPGA, and having a very fine gain trim adjustment to compensate for a mismatch between the external resistors20and22and the coarse programmable gain amplifier CPGA.
REFERENCES:
patent: 5953412 (1999-09-01), Sheets et al.
patent: 6226322 (2001-05-01), Mukherjee
patent: 6226331 (2001-05-01), Gambuzza
Hester Richard K.
Richardson Donald C.
Siniscalchi Patrick P.
Westphal Glenn H.
Brady III W. James
Jamal Alexander
Stewart Alan K.
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
LandOfFree
ADSL front-end in a low voltage process that accommodates... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with ADSL front-end in a low voltage process that accommodates..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and ADSL front-end in a low voltage process that accommodates... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3495497