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A MAGNETICALLY BIASED HALL-EFFECT INTEGRATED CIRCUIT, THAT INCLUDES A MAGNET, BIPOLAR TRANSISTORS, CMOS DEVICES, POLYSILICON RESISTORS, CAPACITORS AND SPECIALLY-DESIGNED EPITAXIAL SILICON CONFIGURED AS A HALL ELEMENT WITHIN THE SINGLE SILICON SUBSTRATE. THE INTEGRATED CIRCUIT IS ONE COMPONENT OF A FINISHED SENSOR ASSEMBLY. TYPICALLY IT IS ATTACHED TO A PRINTED CIRCUIT BOARD, WITH EITHER ELECTRICAL CONNECTORS OR WIRING HARNESS THEN ATTACHED. IT CANNOT BE DIRECTLY INCORPORATED INTO AUTOMOBILE OR OTHER APPLICATIONS, WITHOUT FURTHER PROCESSING. OTHER COMPONENTS SUCH AS RESISTORS, CAPACITORS AND MICROPROCESSORS ARE ALSO ADDED AND THEN THE WHOLE ASSEMBLY WOULD ALSO NEED TO BE OVERMOULDED; TO MAKE IT INTO A FINISHED SENSOR.

HYBRID MICROCIRCUITS CONSISTING A MAGNETICALLY BIASED HALL-EFFECT INTEGRATED CIRCUIT, DISCRETE RESISTORS AND CAPACITORS ON A PRINTED CIRCUIT BOARD ENCAPSULATED IN CASING. THE HALL EFFECT IC INCLUDES A MAGNET, BIPOLAR TRANSISTORS, CMOS DEVICES, POLYSILICON RESISTORS, CAPACITORS AND SPECIALLY-DESIGNED EPITAXIAL SILICON CONFIGURED AS A HALL ELEMENT WITHIN THE SINGLE SILICON SUBSTRATE. THE HYBRID MICROCIRCUIT IS ONE COMPONENT OF A FINISHED SENSOR ASSEMBLY. TYPICALLY IT IS ATTACHED TO A PRINTED CIRCUIT BOARD, WITH EITHER ELECTRICAL CONNECTORS OR WIRING HARNESS THEN ATTACHED. IT CANNOT BE DIRECTLY INCORPORATED INTO AUTOMOBILE OR OTHER APPLICATIONS, WITHOUT FURTHER PROCESSING.

A SINGLE CHIP HALL EFFECT INTEGRATED CIRCUIT THAT INCLUDES VARIOUS ACTIVE AND PASSIVE COMPONENTS SUCH AS BIPOLAR TRANSISTORS, CMOS DEVICES, POLYSILICON RESISTORS, CAPACITORS, AND SPECIALLY-DESIGNED EPITAXIAL SILICON CONFIGURED AS A HALL ELEMENT WITHIN THE SINGLE SILICON SUBSTRATE AND INDIVISIBLY OVER MOULDED WITH A POWER LEAD FRAME AND DISCRETE INDUCTOR USING STANDARD SEMICONDUCTOR MANUFACTURING PROCESSES.

A PREPROGRAMMED SEMI-CONDUCTOR DEVICE IN THE FORM OF A MONOLITHIC APPLICATION SPECIFIC INTEGRATED CIRCUIT (ASIC). THE IC CONTAINS NO OTHER ACTIVE, PASSIVE OR DISCREET COMPONENTS. IT IS USED FOR ANALYSIS OF DATA PRODUCED BY THE SENSING ELEMENTS IN SMOKE DETECTOR PRODUCTS TO DETERMINE WHETHER THE DATA BEING RETURNED INDICATES AN ALARM CONDITION THAT SHOULD BE REPORTED BY THE DETECTOR.

A PREPROGRAMMED MONOLITHIC APPLICATION SPECIFIC INTEGRATED CIRCUIT (ASIC). THE IC HAS NO OTHER ACTIVE, PASSIVE OR DISCREET COMPONENTS. IT IS USED IN ISOLATOR BASE, CALL POINT AND SMOKE DETECTOR DESIGNS, FOR ADDRESSED DATA ACQUISITION AND COMMUNICATION.