MLX90217LUA-CAA-000-BU Melexis

MLX90217 Hall-Effect Geartooth Sensor Features and Benefits Geartooth Sensor Zero Speed Detection Insensitive to Orientation Short Circuit Protection Self-Adjusting Magnetic Range On-chip 10 bit A/D Converter High Speed Operation No Chopper Delay Applications Geartooth Sensor Speed Sensor Camshaft Sensor Direction Detection* *See applications example Ordering Code Product Code Temperature Code Package Code Option Code Packing Form Code MLX90217 L UA CAA-000 BU MLX90217 L UA CCA-000 BU Legend: Temperature Code: L for Temperature Range -40C to 150C Package Code: UA for UA package Option Code: AAA-xxx: Die version xxx-000: Standard version Packing Form: BU for Bulk Ordering example: MLX90217LUA-CAA-000-BU 3901090217 Mar/12 Page 1 Rev.0 10 10-Bit ADC 4-Bit ADC MLX90217 Hall-Effect Geartooth Sensor Functional Diagram Description The MLX90217 is a self adjusting digital output rotary position gear tooth sensor designed for use in automotive camshaft sensing as well as other Hall Plate speed sensing applications. It is designed to be used with a bias magnet south facing the back Amplifier (non-marked) side of the IC. The device has an open collector output which is short circuit protected. The MLX90217 is a sophisticated IC featuring an Logic on-chip 10-bit A/D Converter and logic that acts as a digital sample and hold circuit. A separate 4- bit A/D converter provides a fixed hysteresis. The Voltage Protected 90217 does not have a chopper delay. The 90217 Regulator Output uses a single Hall plate which is immune to rotary alignment problems. The bias magnet can be from 50 to 400mT. 1 2 3 As the signal is sampled, the logic recognizes an increasing or decreasing flux density. The output Pin 1 - V (Supply) DD will turn on (BOP) after the flux has reached its Pin 2 - V (Ground) SS peak and decreased by an amount equal to the Pin 3 - Output hysteresis. Similarly the output will turn off (BRP) after the flux has reached its minimum value and Note: Static sensitive device, please observe ESD precautions. increased by an amount equal to the hysteresis. 3901090217 Mar/12 Page 2 Rev. 010