High Speed Spin Valve Magnetoresistive Isolated Signal Transceiver

Period of Performance: 05/05/1999 - 04/04/2001


Phase 2 SBIR

Recipient Firm

NVE Corp. (formerly Nonvolatile Electron
11409 Valley View Rd.
Eden Prairie, MN 55441
Principal Investigator


Reliable high speed data transfer between subsystems in aerospace, military and commercial applications requires both high speed tranceiver circuitry and galvanic signal isolation. Low voltage differential signaling (LDVS) is an ideal solution for the transceiver circuit implementation. This technology simultaneously meets the high speed, low power, noise immunity and design flexibility requirements for high performance proprietary data busses. Unfortunately, until now the associated galvanic isolatin function has bee provided by bulky, discrete transformations. In this phase II effort, NVE proposes to monolithically integrate their existing high spped magnetoresistive signal isolators with radiation tolerant silicon LVDS circuitry to yield a family of tiny, galvanically isolated LVDS components. These LVDS components will include single channel transceovers. four-channel line drivers and four-channel receivers. In addition a multi-chip module will be developed which integrates and ultra-miniature dc-dc convertor with the isolated LVDS transceiver to provide self-contained, bi-directional isolated data transmission. All of these isolated components will operate at speeds greater than four hundred megabits per second while offering size and power advantages relative to existing technologies. This will free up valuable board space, weight and power for other systems. Faster, longer distance and more reliable buss communications in computer systems and subsystems will be enabled with high speed isolated LVDS tranceiver chipset. This development can be used by any commercial, industrial or military computer system or subsystems manufacturer witht he need for high rates of data transfer.