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 MLX90217 L MLX90217 L Legend: Temperature Code: Package Code: Option Code: Package Code UA UA Option Code CAA-000 CCA-000 Packing Form: L for Temperature Range -40°C to 150°C UA for UA package AAA-xxx: Die version xxx-000: Standard version BU for Bulk Ordering example: MLX90217LUA-CAA-000-BU 3901090217 Rev.010 Page 1 Packing Form Code BU BU Mar/12 MLX90217 Hall-Effect Geartooth Sensor Functional Diagram Description Hall Plate 10-Bit ADC 4-Bit ADC Amplifier 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. Logic Voltage Regulator 1 Protected Output 2 3 Pin 1 - VDD (Supply) Pin 2 - VSS (Ground) Pin 3 - Output Note: Static precautions. 3901090217 Rev.010 sensitive device, please observe 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. ESD 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 (BRP) after the flux has reached its minimum value and increased by an amount equal to the hysteresis. Page 2 Mar/12 MLX90217 Hall-Effect Geartooth Sensor MLX90217 Electrical Specifications DC Operating Parameters TA = -40oC to 150oC, VDD = 3.5V to 24V (unless otherwise specified). Parameter Symbol Test Conditions Min Typ Max Units Supply Voltage VDD Operating 3.5 - 24 V Supply Current IDD VDD = 12V 1.5 3.0 4.5 mA Supply Current IDD VDD = 3.5V to 24V 1 - 6 mA Leakage Current ILEAK VOUT = 3.5V to 24V - - 10 A Output Current IOUT Operating - - 25 mA Output Saturation Voltage VSAT VDD = 12V, IOUT = 25mA - - 600 mV Output Short Circuit Current IFAULT Fault 50 100 150 mA Output Short Circuit Shutdown TFAULT Fault 100 - 200 S Clock Frequency fCLK Operating 300 500 800 kHz Output Rise Time tr VDD=12V R1 = 880Ω C1 = 20pf - 400 nS Output Fall Time tf VDD=12V R1 = 880 Ω C1 = 20pf - 400 nS Bandwidth BW Operating - - 15 kHz Thermal Resistance RTH Operating - - 200 oC/Watt MLX90217 Magnetic Specifications DC Operating Parameters TA = -40oC to 150oC, VDD = 3.5V to 24V (Unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Units Back Bias Range BBIAS Operating -30 - 400 mT VDD = 12V 50 - 500 mT (CAA-000) (CCA-000) 1.8 3.8 3.5 5.5 10 12 mT mT Linear Region Hysteresis Bhys Note:1mT=10Gauss 3901090217 Rev.010 Page 3 Mar/12 MLX9 90217 Hall-Effect t Geartooth Sensor Performance Graphs Absolute Maximum Ratings R Supply Voltage (Operating), VDD Supply Current (Fault), IDD 50mA Output Current (Fault), IOUT 30mA Output Current (Fault), Ifault 50mA Output Voltage, VOUT 30V Power Dissipation, PD 100mW Operating Temperature Range, TA - 40°C to 150°C Storage Temperature Range, TS - 65°C to 150°C Maximun Junction Temp, TJ 3901090217 Rev.010 30V Page 4 175°C Mar/12 MLX90217 Hall-Effect Geartooth Sensor Application Notes Maximum dynamic range is 500 mT. The hysteresis is fixed at 5.0 mT. Best angular accuracy will be obtained when the magnetic circuit provides peak magnetic flux at the chip near the high end of the linear range of 500 mT. EMC protection using external components are recommended. Two possibilities are shown on the following page. Normally the South pole faces the unbranded side of the device. A North pole will enable a test sequence used in factory testing. Unique Features The output is reset to the high state at power on (output driver is off) whatever the field is. The output only changes after the first min is detected. The reset state holds no information about the field. If the supply of the chip is raised slowly, the reset state is not stable. This has been observed at 0 field but it should be the same with small and large fields. Gear tooth sensors often need to be adjusted after the module is assembled to align the magnet with differential Hall plates or orient with teeth. However the MLX90217 is “self adjusting” over a wide range of back bias flux eliminating the need for any trimming in the application. The magnet may be glued to the back surface (non branded side) of the IC using a cyanoacrylate adhesive or suitable epoxy. 3901090217 Rev.010 Page 5 Mar/12 MLX90217 Hall-Effect Cam Sensor Applications Examples 3901090217 Rev.010 Page 6 Mar/12 MLX90217 Hall-Effect Cam Sensor Physical Characteristics 3901090217 Rev.010 Page 7 Mar/12 MLX90217 Hall-Effect Cam Sensor Standard information regarding manufacturability of Melexis products with different soldering processes Our products are classified and qualified regarding soldering technology, solderability and moisture sensitivity level according to following test methods: Reflow Soldering SMD’s (Surface Mount Devices) • IPC/JEDEC J-STD-020 Moisture/Reflow Sensitivity Classification for Nonhermetic Solid State Surface Mount Devices (classification reflow profiles according to table 5-2) • EIA/JEDEC JESD22-A113 Preconditioning of Nonhermetic Surface Mount Devices Prior to Reliability Testing (reflow profiles according to table 2) Wave Soldering SMD’s (Surface Mount Devices) and THD’s (Through Hole Devices) • EN60749-20 Resistance of plastic- encapsulated SMD’s to combined effect of moisture and soldering heat • EIA/JEDEC JESD22-B106 and EN60749-15 Resistance to soldering temperature for through-hole mounted devices Iron Soldering THD’s (Through Hole Devices) • EN60749-15 Resistance to soldering temperature for through-hole mounted devices Solderability SMD’s (Surface Mount Devices) and THD’s (Through Hole Devices) • EIA/JEDEC JESD22-B102 and EN60749-21 Solderability For all soldering technologies deviating from above mentioned standard conditions (regarding peak temperature, temperature gradient, temperature profile etc) additional classification and qualification tests have to be agreed upon with Melexis. The application of Wave Soldering for SMD’s is allowed only after consulting Melexis regarding assurance of adhesive strength between device and board. Melexis is contributing to global environmental conservation by promoting lead free solutions. For more information on qualifications of RoHS compliant products (RoHS = European directive on the Restriction Of the use of certain Hazardous Substances) please visit the quality page on our website: http://www.melexis.com/quality.aspx ESD Precautions Electronic semiconductor products are sensitive to Electro Static Discharge (ESD). Always observe Electro Static Discharge control procedures whenever handling semiconductor products. 3901090217 Rev.010 Page 8 Mar/12 MLX90217 Hall-Effect Cam Sensor Disclaimer Devices sold by Melexis are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. Melexis makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. Melexis reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with Melexis for current information. This product is intended for use in normal commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment are specifically not recommended without additional processing by Melexis for each application. The information furnished by Melexis is believed to be correct and accurate. However, Melexis shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interrupt of business or indirect, special incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. No obligation or liability to recipient or any third party shall arise or flow out of Melexis’ rendering of technical or other services. © 2012 Melexis NV. All rights reserved. For the latest version of this document, go to our website at www.melexis.com Or for additional information contact Melexis Direct: Europe, Africa, Asia: Phone: +32 1367 0495 E-mail: [email protected] America: Phone: +1 248 306 5400 E-mail: [email protected] ISO/TS 16949 and ISO14001 Certified 3901090217 Rev.010 Page 9 Mar/12