On-chip series terminated CMOS(Bi-CMOS) driver

Details On-chip series terminated CMOS(Bi-CMOS) driver On-chip series terminated CMOS(Bi-CMOS) driver

1994-08-01

1996-07-02

Westin, Edward P.

Electronic digital logic circuitry

Signal sensitivity or transmission integrity

Bus or line termination

326 33, H03K 1716

Patent

active

055326161

ABSTRACT:
A terminated driver circuit 10 having a controlled output impedance includes an external impedance 12 connected to a bias generator circuit 20 which is operable to generate a plurality of bias voltages in response to a reference current generated by bias generator circuit 20 wherein the reference current magnitude is a function of external impedance 12. An output driver circuit 30 is connected to bias generator circuit 20. Output driver circuit 30 has a plurality of output devices connected to a transmission line and is operable to receive the plurality of bias voltages from bias generator circuit 20 and multiplex them such that only a single bias voltage is driving a single output device at a time. The plurality of bias voltages causes the plurality of output devices to have specific, controlled impedances when conducting wherein the controlled output impedances match the characteristic impedance of a transmission line 40 being driven by terminated driver circuit 10 thereby reducing waveform reflections.

REFERENCES:
patent: 4682059 (1987-07-01), Garcia
patent: 4719369 (1988-01-01), Asano
patent: 4947061 (1990-08-01), Metz
patent: 4967104 (1990-10-01), Ludwig
patent: 5095231 (1992-03-01), Sartori
patent: 5254883 (1993-10-01), Horowitz
patent: 5396028 (1995-03-01), Tomassetti

Affiliated with

Also associated with

Rating

On-chip series terminated CMOS(Bi-CMOS) driver does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with On-chip series terminated CMOS(Bi-CMOS) driver, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On-chip series terminated CMOS(Bi-CMOS) driver will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1509385