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| Preliminary Datasheet LINEAR HALL-EFFECT IC General Description The AH49E is a small, versatile linear Hall-effect device that is operated by the magnetic field from a permanent magnet or an electromagnet. The output voltage is set by the supply voltage and varies in proportion to the strength of the magnetic field. The integrated circuitry features low noise output, which makes it unnecessary to use external filtering. It also includes precision resistors to provide increased temperature stability and accuracy. The operating temperature range of these linear Hall sensors is -40oC to 85oC, appropriate for commercial, consumer and industrial applications. The AH49E is available in standard TO-92S package. AH49E Features * * * * * * * * Miniature Construction Power Consumption of 3.5mA at VCC=5V for Energy Efficiency Single Current Sourcing Output Linear Output for Circuit Design Flexibility Low Noise Output Virtually Eliminates the Need for Filtering A Stable and Accurate Output Temperature Range of -40oC to 85oC Responds to Either Positive or Negative Gauss Applications * * * * * * * * Current Sensing Motor Control Position Sensing Magnetic Code Reading Ferrous Metal Detector Vibration Sensing Liquid Level Sensing Weight Sensing TO-92S Figure 1. Package Type of AH49E Jun. 2008 Rev. 1. 1 1 BCD Semiconductor Manufacturing Limited Preliminary Datasheet LINEAR HALL-EFFECT IC Pin Configuration Z3 Package (TO-92S ) AH49E 3 2 1 OUT GND VCC Figure 2. Pin Configuration of AH49E (Bottom View) Pin Description Pin Number 1 2 3 Pin Name VCC GND OUT Supply voltage Ground pin Output Function Jun. 2008 Rev. 1. 1 2 BCD Semiconductor Manufacturing Limited Preliminary Datasheet LINEAR HALL-EFFECT IC Functional Block Diagram AH49E 1 VCC HALL Sensor Amplifier 65A Typ. 3 OUT 2 GND Figure 3. Functional Block Diagram of AH49E Ordering Information AH49E Circuit Type Package Z3: TO-92S E1: Lead Free G1: Green Blank: Bulk Package TO-92S Temperature Range -40 to 85oC Part Number Lead Free AH49EZ3-E1 Green AH49EZ3-G1 AH49E Marking ID Lead Free Green AH49G Packing Type Bulk BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. Products with "G1" suffix are available in green package. Jun. 2008 Rev. 1. 1 3 BCD Semiconductor Manufacturing Limited Preliminary Datasheet LINEAR HALL-EFFECT IC Absolute Maximum Ratings (Note 1) Parameter Supply Voltage Output Current Operating Temperature Storage Temperature Range ESD (Human Body Model) Symbol VCC IO TA TSTG Value 8 10 -40 to 100 -50 to 150 3000 Unit V mA o AH49E C oC V Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum Ratings" for extended periods may affect device reliability. Recommended Operating Conditions Parameter Supply Voltage Operating Temperature Symbol VCC TOP Min 3.0 -40 Max 6.5 85 Unit V o C Jun. 2008 Rev. 1. 1 4 BCD Semiconductor Manufacturing Limited Preliminary Datasheet LINEAR HALL-EFFECT IC Electrical Characteristics (VCC=5V, TA=25oC, unless otherwise specified.) Parameter Supply Current Quiescent Output Voltage Output Voltage Sensitivity Output Voltage Span VOS Symbol ICC VNULL @ B=0GS B=0GS to 1000GS 2.25 1.1 1.0 to (VCC-1.0) Conditions Min Typ 3.5 2.5 1.6 0.8 to (VCC-0.8) 60 650 1000 0.7 BW=10Hz to 10kHz 90 120 Max 4.5 2.75 2.1 Unit mA V mV/GS V AH49E Output Resistor Magnetic Field Range Linearity of Span Output Noise RO B GS % V Transfer Characteristics (VCC=5V) When there is no ouside magnetic field (B=0GS), the quiescent output voltage is one-half the supply voltage in general. If a south magnetic pole approches to the front face (the side with marking ID) of the Halleffect sensor, the circuit will drive the output voltage higher. Contrary, a north magnetic pole will drive the output voltage lower. The variations of voltage level up or down are symmetrical. Greatest magnetic sensitivity is obtained with a supply voltage of 6V, but at the cost of increased supply current and a slight loss of output symmetry. So, it is not recommended to work in such condition unless the output voltage magnitude is a main issue. The output signal can be capacitively coupled to an amplifier for boosting further if the changing frequency of the magnetic field is high. V Typical Output Voltage 4.0 V 2.5 V 1.0 V -1000 -500 0 500 1000 B (Gauss) Figure 4. The Transfer Characteristics of AH49E Jun. 2008 Rev. 1. 1 5 BCD Semiconductor Manufacturing Limited Preliminary Datasheet LINEAR HALL-EFFECT IC Typical Performance Characteristics AH49E 5 5 VCC=5V No load 4 B=0GS No load 4 VOUT(V) VOUT(V) 3 3 2 2 1 1 0 0 -1000 -500 0 500 1000 2 3 4 5 6 7 8 B(GS) VCC(V) Figure 5. Output Voltage vs. Magnetic Field Figure 6. Output Voltage vs. Supply Voltage 5 4 VCC=5V B=0GS No load 3 VOUT(V) 2 1 0 -50 0 O 50 100 TA( C) Figure 7. Output Voltage vs. Ambient Temperature Jun. 2008 Rev. 1. 1 6 BCD Semiconductor Manufacturing Limited Preliminary Datasheet LINEAR HALL-EFFECT IC Mechanical Dimensions TO-92S Unit: mm(inch) AH49E 44 46 0.710(0.028) 0.810(0.032) 1.480(0.058) 1.680(0.066) 4.000(0.157) 4.200(0.165) 2.200(0.087) 1.900(0.075) 1.350(0.053) 1.050(0.041) Package Sensor Location 3.080(0.121) 3.280(0.129) 0.440(0.017) TYP 2.200(0.087) 2.400(0.094) 13.500(0.531) 14.500(0.571) 1.270(0.050) TYP 0.380(0.015) TYP Jun. 2008 Rev. 1. 1 7 BCD Semiconductor Manufacturing Limited BCD Semiconductor Manufacturing Limited http://www.bcdsemi.com IMPORTANT NOTICE BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifications herein. BCD Semiconductor Manufacturing Limited does not assume any responsibility for use of any its products for any particular purpose, nor does BCD Semiconductor Manufacturing Limited assume any liability arising out of the application or use of any its products or circuits. BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights or other rights nor the rights of others. MAIN SITE - Headquarters BCD Semiconductor Manufacturing Limited BCD Semiconductor Manufacturing Limited - Wafer Fab No. 1600, Zi Xing Road, Shanghai ZiZhu Science-based Industrial Park, 200241, China Shanghai SIM-BCD Semiconductor Manufacturing Limited Tel: +86-21-24162266, Fax: +86-21-24162277 800, Yi Shan Road, Shanghai 200233, China Tel: +86-21-6485 1491, Fax: +86-21-5450 0008 REGIONAL SALES OFFICE Shenzhen Office REGIONAL SALES OFFICE - Wafer Fab BCD Semiconductor Manufacturing Limited Shanghai Design Group - IC SIM-BCD Semiconductor Manufacturing Co., Ltd. 800 Yi Shan Road, Shanghai 200233, China Corporation Advanced Analog Circuits (Shanghai) Tel: +86-21-6485 900, Yi Shan Road, Shanghai 200233, China 8F, Zone B, 1491, Fax: +86-21-5450 0008 Tel: +86-21-6495 9539, Fax: +86-21-6485 9673 USA Office BCD Semiconductor Corp. USA Office 30920 Huntwood Ave. Hayward, BCD Semiconductor Corporation CA 94544, USA 30920 Huntwood Ave. Hayward, Tel 94544, U.S.A CA : +1-510-324-2988 Fax: +1-510-324-2788 Tel : +1-510-324-2988 Fax: +1-510-324-2788 Taiwan Office Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd., Shenzhen Office BCD Taiwan Office (Taiwan) Company Limited Semiconductor Shenzhen Office Room E, SIM-BCD Semiconductor 3rd Fuzhong Road, Futian District, Shenzhen, 4F, 298-1, Rui Guang Road,(Taiwan) Company Limited Shanghai 5F, Noble Center, No.1006,Manufacturing Co., Ltd. Shenzhen Office BCD Semiconductor Nei-Hu District, Taipei, 518026, China Taiwan 298-1, Rui Guang Road, Nei-Hu District, Taipei, Advanced Analog Circuits (Shanghai) Corporation Shenzhen Office 4F, Tel: +86-755-8826 Center, Tel: Taiwan Room E, 5F, Noble 7951 No.1006, 3rd Fuzhong Road, Futian District, Shenzhen 518026, China +886-2-2656 2808 Fax:+86-755-8826 7951 +86-755-8826 7865 Fax: +886-2-2656 28062808 Tel: Tel: +886-2-2656 Fax: +86-755-8826 7865 Fax: +886-2-2656 2806 |
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