Continuously linear pulse amplifier/line driver with large outpu

Details Continuously linear pulse amplifier/line driver with large outpu Continuously linear pulse amplifier/line driver with large outpu

1994-05-19

1995-08-29

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including gain control means

330253, 330260, 330261, 330311, H03F 345

Patent

active

054464129

ABSTRACT:
A transmission line driver circuit for use in data communication transmitters that is capable of meeting the return loss specifications as well as the electrical interface specifications as defined by C.C.I.T.T. standards for E1/T1 transmission. The line driver circuit of the present invention maintains minimum output impedance during the entire dynamic range of the transmit signal while meeting the pulse shape template requirements. The circuit includes a predriver stage that controls the slew rate of the transmit signal within the constraints of the pulse template. This allows a subsequent output driver stage to enjoy fast slew rates, large gain and dynamic range, and very small output impedance to meet the return loss specification.

REFERENCES:
patent: 4668919 (1987-05-01), de Weck
patent: 4758799 (1988-07-01), Ho et al.
patent: 5166635 (1992-11-01), Shih
patent: 5285168 (1994-02-01), Tomatsu et al.

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