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MLX90217 Dataheets PDF



Part Number MLX90217
Manufacturers Melexis Microelectronic Systems
Logo Melexis Microelectronic Systems
Description Hall-Effect Cam Sensor
Datasheet MLX90217 DatasheetMLX90217 Datasheet (PDF)

MLX90217 Hall-Effect Cam Sensor Features and Benefits s s s s s s s s Rotary Position Gear Tooth Sensor Short Circuit Protection On-chip 10 bit A/D Converter Self-Adjusting Magnetic Range High Speed Operation No Chopper Delay Zero Speed Detection No Rotary Orientation Concerns Applications s s s s s Camshaft Sensor Geartooth Sensor Linear Encoder Rotary Encoder Direction Detection* *See applications example Ordering Information Part No. MLX90217 Temperature Suffix L (-40oC to 150oC) Packag.

  MLX90217   MLX90217



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MLX90217 Hall-Effect Cam Sensor Features and Benefits s s s s s s s s Rotary Position Gear Tooth Sensor Short Circuit Protection On-chip 10 bit A/D Converter Self-Adjusting Magnetic Range High Speed Operation No Chopper Delay Zero Speed Detection No Rotary Orientation Concerns Applications s s s s s Camshaft Sensor Geartooth Sensor Linear Encoder Rotary Encoder Direction Detection* *See applications example Ordering Information Part No. MLX90217 Temperature Suffix L (-40oC to 150oC) Package Code UA (TO-92 flat) Functional Diagram Hall Plate 10-Bit 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 speed sensing applications. It is designed to be used with a bias magnet south facing the back (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 on-chip 10-bit A/D Converter and logic that acts as a digital sample and hold circuit. A separate 4bit A/D converter provides a fixed hysteresis. The 90217 does not have a chopper delay. The 90217 uses a single Hall plate which is immune to rotary alignment problems. The bias magnet can be from 50 to 400mT. As the signal is sampled, the logic recognizes an increasing or decreasing flux density. The output will turn on (BOP) after the flux has reached its peak and decreased by an amount equal to the hysteresis. Similarly the output will turn off (BOP) after the flux has reached its minimum value and increased by an amount equal to the hysteresis. Jun/04 ADC ADC 4-Bit Amplifier Logic Voltage Regulator Protected Output 1 Pin 1 - VDD (Supply) Pin 2 - VSS (Ground) Pin 3 - Output Note: Static precautions. 3901090217 Rev. 009 sensitive 2 3 device, please observe ESD Page 1 MLX90217 Hall-Effect Cam Sensor MLX90217 Electrical Specifications Parameter Supply Voltage Supply Current Supply Current Leakage Current Output Current Output Saturation Voltage Output Short Circuit Current Output Short Circuit Shutdown Clock Frequency Output Rise Time Output Fall Time Bandwidth Thermal Resistance DC Operating Parameters TA = -40oC to 150oC, VDD = 3.5V to 24V (unless otherwise specified). Symbol Test Conditions VDD IDD IDD ILEAK IOUT VSAT IFAULT TFAULT fCLK tr tf BW RTH Operating VDD = 12V VDD = 3.5V to 24V VOUT = 3.5V to 24V Operating VDD = 12V, IOUT = 25mA Fault Fault Operating VDD=12V R1 = 880W C1 = 20pf VDD=12V R1 = 880W C1 = 20pf Operating Operating Min 3.5 1.5 1 50 100 300 Typ 3.0 100 500 - Max 24 4.5 6 10 25 600 150 200 800 400 400 15 200 Units V mA mA µA mA mV mA µS kHz nS nS kHz oC/Watt - - MLX90217 Magnetic Specifications Parameter Back Bias Range Linear Region Hysteresis Bhys DC Operating Parameters TA = -40oC to 150oC, VDD = 3.5V to 24V (Unless otherwise specified) Symbol Test Conditions BBIAS Operating VDD = 12V VDD = 3.5V to 24V Min -30 50 1.8 Typ 3.5 Max 400 500 10 Units m.


S-8233C MLX90217 SS-779E-1


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