Balanced phase data bus transmitter

Details Balanced phase data bus transmitter Balanced phase data bus transmitter

1997-02-10

1999-07-27

Chin, Stephen

Pulse or digital communications

Transmitters

Antinoise or distortion

375257, 375376, 330253, H04K 102

Patent

active

059303026

ABSTRACT:
A transmitter for a differential serial data communication bus incorporating the CAN format includes features for minimizing radiated emissions. The transmitter includes a second order input filter for establishing a slew rate of pulses edges and for rounding corners, a first amplifier for attenuating and level shifting the filtered input to produce a first bus output, and a second amplifier coupled to the first bus output for producing a second bus output mirroring the first. The second amplifier has a high unity gain frequency and a closed loop configuration, both for minimizing phase differential of the two outputs.

REFERENCES:
patent: 5376899 (1994-12-01), Pass
patent: 5432817 (1995-07-01), Hormel et al.
patent: 5684831 (1997-11-01), Moller
patent: 5767703 (1998-06-01), Fattori et al.

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