Preliminary Datasheet LINEAR HALL EFFECT IC AH49F General Description Features The AH49F 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 components. It also includes precision resistors to provide increased temperature stability and accuracy. The operating temperature range of these linear Hall sensors is -40°C to 105°C, appropriate for commercial, consumer, and industrial environments. Miniature Construction Power Consumption of 3.0mA 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: -40°C to 105°C Responds to Either Positive or Negative Gauss The Maximum Instantaneous Supply Voltage Up to 50V High ESD Rating: 6000V (Human Body Model) 600V (Machine Model) The AH49F is available in standard TO-92S and SOT-23-3 packages. Application • • • • • • • • • TO-92S Current Sensing Motor Control Position Sensing Magnetic Code Reading Rotary Encoder Ferrous Metal Detector Vibration Sensing Liquid Level Sensing Weight Sensing SOT-23-3 Figure 1. Package Types of AH49F Jun. 2011 Rev. 1. 1 BCD Semiconductor Manufacturing Limited 1 Preliminary Datasheet LINEAR HALL EFFECT IC AH49F Pin Configuration Z3 Package (TO-92S) N Package (SOT-23-3) GND 3 3 OUT 2 GND 1 VCC (Front View) 1 2 VCC OUT (Top View) Figure 2. Pin Configuration of AH49F Pin Description Pin Number Pin Name Function TO-92S SOT-23-3 1 1 VCC Power supply pin 2 3 GND Ground pin 3 2 OUT Output pin Jun. 2011 Rev. 1. 1 BCD Semiconductor Manufacturing Limited 2 Preliminary Datasheet LINEAR HALL EFFECT IC AH49F Functional Block Diagram Figure 3. Functional Block Diagram of AH49F Ordering Information AH49F - E1: Lead Free G1: Green Circuit Type Blank: Bulk TR: Tape & Reel Package Z3: TO-92S N: SOT-23-3 Package Temperature Range TO-92S Part Number Lead Free Green AH49FZ3-E1 AH49FZ3-G1 Marking ID Lead Green Free 49FE Packing Type 49FG Bulk GT6 Tape & Reel -40 to 105°C SOT-23-3 AH49FNTR-G1 BCD Semiconductor's Pb-free products, as designated with "G1" suffix in the part number, are RoHS compliant and green. Jun. 2011 Rev. 1. 1 BCD Semiconductor Manufacturing Limited 3 Preliminary Datasheet LINEAR HALL EFFECT IC AH49F Absolute Maximum Ratings (Note 1) Parameter Symbol Value Unit VCC 10 V VCC_INST 50 V Supply Voltage Instantaneous Supply Voltage TO-92S 400 Power Dissipation PD mW SOT-23-3 230 Ambient Temperature TA -40 to 125 °C Storage Temperature TSTG -50 to 150 °C ESD (Human Body Model) 6000 V ESD (Machine Model) 600 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 (TA=25°C) Parameter Symbol Min Max Unit Supply Voltage VCC 3 8 V Operating Temperature TOP -40 105 °C Jun. 2011 Rev. 1. 1 BCD Semiconductor Manufacturing Limited 4 Preliminary Datasheet LINEAR HALL EFFECT IC AH49F Electrical Characteristics VCC=5V, TA=25°C, unless otherwise specified. Parameter Symbol Supply Current Quiescent Output Voltage Output Voltage Sensitivity Output Voltage Span Output Resistor Linear Magnetic Range Linearity of Span Conditions ICC VNULL B=0 (Gauss) VSEN B=0 to (Gauss) ±600 VOUT_S ROUT B Min Typ Max Unit 2 3 4 mA 2.25 2.5 2.75 V 1.7 2.1 2.5 mV/Gauss 1.0 to (VCC-1.0) 0.8 to (Vcc-0.8) 60 ±800 0.7 ±500 Bandwidth=10Hz to 10kHz Output Noise V 120 Ω Gauss % μV 90 Transferring Characteristics (VCC=5V) output voltage magnitude is a main issue. The output signal can be capacitively coupled to a next-level amplifier for further amplifying if the changing frequency of the magnetic field is high. When there is no outside magnetic field (B=0Gauss), the quiescent output voltage is one-half the supply voltage in general. For TO-92S package, if a south magnetic pole approaches the front face (the side with marking ID) of the Hall effect sensor, the circuit will drive the output voltage higher. In contrary, a north magnetic pole will drive the output voltage lower. The variations of voltage level up or down are symmetrical. Because the SOT-23-3 is reversed packaging with TO-92S, so the magnetic performance is also reversed. Therefore, if the reversed magnetic pole approaches the front face, the output is the same as TO-92S package. Greatest magnetic sensitivity is obtained with a supply voltage of 8V, 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 V Typical Output Voltage 4.0V 2.5V 1.0V -800 -400 0 B (Gauss) 400 800 Figure 4. Transferring Characteristic of AH49F North Pole South Pole For TO-92S For SOT-23-3 Figure 5. Magnetic Characteristic of AH49F Jun. 2011 Rev. 1. 1 BCD Semiconductor Manufacturing Limited 5 Preliminary Datasheet LINEAR HALL EFFECT IC AH49F Typical Performance Characteristics 5.0 5 4.5 4 4.0 3 VOUT (V) ICC (V) 3.5 3.0 2.5 2 2.0 No Load 1.0 2 3 4 5 6 7 VCC=5V 1 B=0Gauss No Load 1.5 0 -1500 8 -1000 -500 Figure 6. Supply Current vs. Supply Voltage 500 1000 1500 Figure 7. Output Voltage vs. Magnetic Field 5 5 4 4 3 3 VOUT (V) VOUT (V) 0 B (Gauss) VCC (V) 2 2 VCC=5V B=0Gauss No Load 1 B=0Gauss No Load 1 0 0 2 3 4 5 6 7 -40 8 40 80 120 TA ( C) Figure 8. Output Voltage vs. Supply Voltage Jun. 2011 0 o VCC (V) Figure 9. Output Voltage vs. Ambient Temperature Rev. 1. 1 BCD Semiconductor Manufacturing Limited 6 Preliminary Datasheet LINEAR HALL EFFECT IC AH49F Typical Performance Characteristics (Continued) 450 SOT-23-3 TO-92S 400 350 PD (mW) 300 250 200 150 100 50 0 0 25 50 75 100 125 150 O TA ( C) Figure 10. Power Dissipation vs. Ambient Temperature Jun. 2011 Rev. 1. 1 BCD Semiconductor Manufacturing Limited 7 Preliminary Datasheet LINEAR HALL EFFECT IC AH49F Mechanical Dimensions TO-92S ° ° 44 46 Unit: mm(inch) 0.710(0.028) 0.810(0.032) 1.480(0.058) 1.680(0.066) 1.150(0.045) 1.450(0.057) 4.000(0.157) 4.200(0.165) 1.900(0.075) 2.200(0.087) 3.080(0.121) 3.280(0.129) Package Sensor Location 2.200(0.087) 2.400(0.094) 0.440(0.017) TYP 13.500(0.531) 14.500(0.571) 1.270(0.050) TYP Jun. 2011 Rev. 1. 1 0.380(0.015) TYP BCD Semiconductor Manufacturing Limited 8 Preliminary Datasheet LINEAR HALL EFFECT IC AH49F Mechanical Dimensions (Continued) SOT-23-3 Unit: mm(inch) 2.820(0.111) 3.020(0.119) 0.100(0.004) 0.200(0.008) 0.300(0.012) 0.600(0.024) 1.300(0.051) 1.600(0.063) 1.500(0.059) 1.700(0.067) Package Sensor Location 2.650(0.104) 2.950(0.116) (For Hall IC) 0.200(0.008) 0.670(0.026) 0.970(0.038) 1.800(0.071) 2.000(0.079) 0 8 0.300(0.012) 0.500(0.020) 1.450(0.057) MAX. 0.950(0.037) TYP ° ° 0.000(0.000) 0.150(0.006) 0.900(0.035) 1.300(0.051) Jun. 2011 Rev. 1. 1 BCD Semiconductor Manufacturing Limited 9 BCD Semiconductor Manufacturing Limited http://www.bcdsemi.com IMPORTANT NOTICE IMPORTANT NOTICE BCD Semiconductor BCD Semiconductor Manufacturing Manufacturing Limited Limited reserves reserves the the right right to to make make changes changes without without further further notice notice to to any any products products or or specifispecifications herein. cations herein. BCD BCD Semiconductor Semiconductor Manufacturing Manufacturing Limited Limited does does not not assume assume any any responsibility responsibility for for use use of of any any its its products products for for any any particular purpose, particular purpose, nor nor does does BCD BCD Semiconductor Semiconductor Manufacturing Manufacturing Limited Limited assume assume any any liability liability arising arising out out of of the the application application or or use use of any of any its its products products or or circuits. circuits. BCD BCD Semiconductor Semiconductor Manufacturing Manufacturing Limited Limited does does not not convey convey any any license license under under its its patent patent rights rights or or other rights other rights nor nor the the rights rights of of others. others. MAIN SITE SITE MAIN - Headquarters BCD Semiconductor Manufacturing Limited BCD Semiconductor Manufacturing Limited - Wafer Fab No. 1600, Zi Xing Road, Shanghai ZiZhu Science-basedLimited Industrial Park, 200241, China Shanghai SIM-BCD Semiconductor Manufacturing Tel: Fax: +86-21-24162277 800,+86-21-24162266, Yi Shan Road, Shanghai 200233, China Tel: +86-21-6485 1491, Fax: +86-21-5450 0008 REGIONAL SALES OFFICE Shenzhen OfficeSALES OFFICE REGIONAL - Wafer FabSemiconductor Manufacturing Limited BCD Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd. - IC Design Group 800 Yi Shan Road, Shanghai 200233, China Corporation Advanced Analog Circuits (Shanghai) Tel: +86-21-6485 1491,YiFax: 0008200233, China 8F, Zone B, 900, Shan+86-21-5450 Road, Shanghai Tel: +86-21-6495 9539, Fax: +86-21-6485 9673 Taiwan Office Shanghai Semiconductor Manufacturing Co., Ltd., Shenzhen Office BCD Taiwan Semiconductor Shenzhen SIM-BCD Office Office (Taiwan) Company Limited Unit A Room 1203, Skyworth Bldg., Gaoxin Ave.1.S., Nanshan Shenzhen, 4F, 298-1, Guang Road,(Taiwan) Nei-Hu District, Taipei, Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd.District, Shenzhen Office BCDRui Semiconductor Company Limited China Taiwan Advanced Analog Circuits (Shanghai) Corporation Shenzhen Office 4F, 298-1, Rui Guang Road, Nei-Hu District, Taipei, Tel: +86-755-8826 Tel: +886-2-2656 2808 Room E, 5F, Noble 7951 Center, No.1006, 3rd Fuzhong Road, Futian District, Shenzhen 518026, China Taiwan Fax: +86-755-88267951 7865 Fax: +886-2-2656 28062808 Tel: +86-755-8826 Tel: +886-2-2656 Fax: +86-755-8826 7865 Fax: +886-2-2656 2806 USA Office BCD Office Semiconductor Corp. USA 30920Semiconductor Huntwood Ave.Corporation Hayward, BCD CA 94544, USA Ave. Hayward, 30920 Huntwood Tel :94544, +1-510-324-2988 CA U.S.A Fax:: +1-510-324-2988 +1-510-324-2788 Tel Fax: +1-510-324-2788