Magnetically coupled signal isolator using a Faraday shielded MR

Details Magnetically coupled signal isolator using a Faraday shielded MR Magnetically coupled signal isolator using a Faraday shielded MR

1998-07-17

2000-04-25

Paladini, Albert W.

Electrical transmission or interconnection systems

Anti-induction or coupling to other systems

Magnetic or electrostatic field control

307 89, 32420721, 323294, 323368, 257508, 257659, 257660, 257662, H05K 900

Patent

active

060547804

ABSTRACT:
An isolator having a driver circuit which responsive to an input signal drives appropriate signals into one or more coils which are magnetically coupled to one or more corresponding MR or GMR elements whose resistance is variable in response to the magnetic field applied by the coil(s), and an output circuit that converts the resistance changes to an output signal corresponding to the input signal. A Faraday shield is interposed between the coil(s) and the MR or GMR elements. Common mode transients applied to the driver are capacitively coupled from the coil(s) into the Faraday shield and therethrough to ground, instead of into the MR elements. A second Faraday shield may be disposed in spaced relationship with the first Faraday shield and referenced to the potential of the MR elements for even greater common mode rejection. The entire structure may be formed monolithically as an integrated circuit on a single substrate, for low cost, small size, and low power consumption. With proper driver and receiver circuits, the isolator may transmit either analog or digital signals.

REFERENCES:
patent: 3537022 (1970-10-01), Regan
patent: 5041780 (1991-08-01), Rippel
patent: 5270882 (1993-12-01), Jove et al.
patent: 5539598 (1996-07-01), Denison et al.

Affiliated with

Also associated with

Rating

Magnetically coupled signal isolator using a Faraday shielded MR does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Magnetically coupled signal isolator using a Faraday shielded MR, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetically coupled signal isolator using a Faraday shielded MR will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-995564