New company announces breakthrough disruptive electronically adjustable micro-resistor technology

Montral, Qubec, January 13, 2004 – Microbridge Technologies announced the introduction of the Rejustor, the world's first electronically precision-adjustable passive micro-resistor device.

The Rejustor is a passive, VLSI and MEMS compatible micro-resistor. It is non-volatile, and re-adjustable many times, bi-directionally, to very high precision, using only electrical signals. Rejustors can also be Temperature Coefficient matched with other Rejustors, again using only electrical signals. All adjustments can be carried out at low voltage and low current before and/or after packaging or even in-circuit after years of operation.

“With the Rejustor, for the first time circuit designers have at their disposal a low cost electronically controlled high precision bi-directional adjustment capability for in-circuit automation of resistive 'trimming' in electronics,” said Mike Foster, CEO of Microbridge Technologies.

“Pairs of Rejustor devices can be Resistance matched to typically better than 0.005% and, in a world's first, their Temperature Coefficient of Resistance can be adjusted to match another Rejustor to better than 2 ppm/oK, or intentionally adjusted to a precise mismatch in TCR to help temperature compensate electronic circuitry,” said Les Landsberger, Microbridge's Chief Technology Officer.

Rejustors are CMOS and BiCMOS process compatible, so as well as soon being available as discrete devices, they can be incorporated into analog, mixed-signal and Systems-on-Chip integrated circuit designs. Rejustors are particularly interesting for RF applications as passive adjustable resistors with low capacitance and excellent high-frequency performance.

“The combination of precision resistance adjustment and TCR matching or controlled TCR mismatch provided by the Rejustor takes analog and sensor design beyond today's capabilities to the next stage of precision performance over wide temperature ranges” said Nick Tasker, VP Business Development at Microbridge. “A new generation of high performance semiconductor integrated circuit devices is now possible.”

Rejustor devices will be demonstrated for the first time in public at the Microbridge Technologies booth at IEEE MEMS 2004, January 25-29th in Maastricht, Netherlands.

Microbridge Technologies, Inc. is an early stage technology company specializing in micro-systems technology for electronics, micro-devices and sensor-based systems. Microbridge uses micro-thermal devices based on conventional silicon integrated circuit technology to create solutions in a variety of industries. The devices involve a micro-membrane with embedded micro-heater, suspended over a cavity in a silicon chip. These structures form the basis for a broad family of products in the form of electronically adjustable resistive micro-devices that provide an unprecedented combination of high precision, price, and ease of use. For further information please visit

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