Hall Effect Switches incorporate non-volatile memory.
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Press Release Summary:
Suited for automotive applications, Series MLX92242 ICs each contain voltage regulator, Hall sensing element, and current sink-configured output driver. Devices support 2-wire implementation, only needing VDD and GND pins, but providing diagnostic capacity if malfunction conditions occur. Through built-in EEPROM, OEMs can carry out end-of-line programming, allowing cancellation of mechanical tolerances within application. ICs cover voltage range of 2.7–24 V and operate from -40 to 150°C.
Original Press Release:
Next Generation Re-Programmable 2-Wire Hall Effect Switches Simplify System Design Implementation
Tessenderlo, Belgium -- Melexis Technologies NV announces the introduction of the MLX92242, the latest addition to the company’s advanced Hall effect switch/latch IC offering. Every one of these highly integrated devices contain a voltage regulator (supporting a wide operating voltage range), as well as Hall sensing element and a current sink-configured output driver, all in a single compact, low-profile package. Their key attribute is the non-volatile memory that each possesses. Through this built-in EEPROM resource OEMs that have specified the MLX92242 can carry out end-of-line (EOL) programming, allowing cancellation of all mechanical tolerances within the application.
Programmable memory is used to enable the various tolerances that need defining for a specific application to be set (via the device’s VDD pin) and if necessary readjusted, before finally being locked. The range and resolution of programmable magnetic thresholds and thermal sensitivity coefficients allows the sensor working in conjunction with a magnet to easily implement a ferrous metal proximity sensing system. The temperature compensation programmability of the MLX92242 means it can be used with all kind of magnets (including the low cost ferrite materials). The resulting cost-effective and very small ferrous proximity switch handily serves many limit position, proximity detection and encoding applications.
What differentiates the MLX92242 from other devices of this kind is that it supports 2-wire rather than a 3-wire implementation, only needing use of the VDD and GND pins, but still providing all the necessary diagnostic capacity to respond if malfunction conditions occur. The advantage of this is that far less wiring/cable harnessing is needed, allowing deployment into confined spaces and reducing the overall weight in applications where this could otherwise be a disadvantage. The voltage range, which covers 2.7V to 24V, enables design flexibility to be maximized.
The MLX92242 is mainly targeted at automotive applications, such as seatbelt latch detectors, seat position sensors, window lifters, etc. It can be implemented in remote applications, where it is some distance from the electronic control unit (ECU). A variety of industrial and security based tasks can also benefit from its use. The sophisticated proprietary offset cancellation system within the magnetic core enables faster and more precise processing of the data acquired from the sensing element while being resilient to the temperature fluctuations and other forms of stress that are inherent in automotive and industrial environments. The device has a very high resilience to electro-static discharge (ESD) phenomena, with 8kV human body mode ESD compliance, and has a broad operational temperature range which spans from -40°C to 150°C. Reverse supply voltage and under-voltage lockout protection mechanisms are incorporated. It is supplied in a choice of either a 3-pin TO-92-Flat for through-hole mount assembly or in 3-pin TSOT for surface mount assembly. The MLX92242 is approximately $0.56 for UA package and $0.54 for SE package versions at 10K pieces.
Contact Melexis
Marketing
Peter Riendeau
Melexis Inc
15 Trafalgar Sq., Ste. 100
Nashua, NH 03063
USA
Tel: 603-204-2900
Fax: 603 578-1270
pre@melexis.com
Sales
Susan Brocious
Melexis Inc
15 Trafalgar Sq., Ste. 100
Nashua, NH 03063
USA
Tel: 603-204-2900
Fax: 603 578-1270
sbr@melexis.com
About Melexis
Melexis Microelectronic Integrated Systems N.V. (Euronext Brussels:MELE) imagines, creates and delivers innovative mixed signal integrated circuits. Melexis ICs are driving green solutions that enable our customers to bring more energy efficient automotive systems to market. Melexis product portfolio addresses 4 classes of ICs; Sensor, Optoelectronic, Wireless and Actuators. Sensors include magnetic, MEMS, and sensor interface ICs. Optoelectronic products encompass linear arrays, single point sensors, infrared thermometers and CMOS wide dynamic range and night vision cameras. Wireless ICs focus on RKE, TPMS, ISM band applications, NFC, RFID reader and smart tag solutions. Actuator ICs cover LIN and CAN bus networking ICs and advanced BLDC motor driver technology. Melexis is proud of its participation toward reducing the human race's global environmental footprint.
For more information visit www.melexis.com
