Hall effect Devices

Short Form Catalog

Hall Effect Devices detect magnetic flux density produced by a permanent magnet or current in a wire.Typical uses are for movement and position sensing. Hall devices are by their nature immune to dust, dirt and vibration, ideal characteristics for performance in an automotive environment. By integrating the sensing element onto the same silicon as its control logic and interface circuitry, Melexis produces sensors with intelligence. Melexis was the first Hall IC manufacturer to add user programmability to its Hall ICs. This breakthrough innovation has allowed a simplification of our customer’s modules due to the flexibility and customizable options of Melexis ICs. Sensing rotation of shafts like the cam- and crank-shaft in the engine, monitoring movement in motors and actuators, sensing pedal, throttle and steering wheel position are staple functions for millions of Melexis Hall ICs in cars today. Melexis Hall Effect Devices enable an optimal use of the smaller feature sizes of which semiconductor technology is capable today. Therefore, very sophisticated mixed analog-digital signal conditioning circuitry (such as Chopped Analog String, Digital Signal Processing Core, Microcontroller, Eeprom memory) can be integrated. Most of the devices can withstand the severe automotive conditions despite few external components. Melexis Hall effect sensors can be seen, on the basis of their performance, as a competitive technical alternative for inductive speed sensors, potentiometer type resistive position sensors, bipolar Hall sensors and magneto-resistive sensors. The Melexis Hall Effect sensors out-perform these alternate sensor technologies by integration of more signal-processing at a competitive cost. The future shows that the value of integration can provide for communication, decision making and flexible functions embedded into a single chip. Another worlds first from Melexis has been created in the dual redundant programmable linear Hall IC. This chip is targeted at safety systems like pedal position sensing in drive by wire control systems. These unique solutions have achieved a significant nexus between total installed cost and fully redundant reliability. Melexis continues investment in Hall magnetic technology to realize considerable further potential in automotive applications like a contactless 360 degrees rotary position sensor to replace full-turn and multi-turn potentiometer sensors.

Consumer Hall

Among our world class magnetic sensing solutions are the highly integrated Hall ICs for high volume industrial applications such as smart brushless dc motor manufacturer drivers and controllers with integrated magnetic sensing. Based on automotive technologies, Melexis has developed a wide range of specialized Hall sensors, used for electronic equipment cooling fans. Unique functions such as low voltage operation, high start-up current, small die and package size are offered. Their cost effectiveness makes these products a preferred integrated solution for numerous applications. The completion of even more efficient driver solutions will allow our partners to halve the copper content in their motors without any loss of performance. Introduction of these devices began in 2004 for design in activity with ramp up to volume production in 2005. Melexis Short Form Catalog Page 4 Revision 5.1.0