AH49HNTR-G1

Data Sheet LINEAR HALL EFFECT IC AH49H General Description Features The AH49H 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 2mA at VCC=3.3V 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) 400V (Machine Model) The AH49H is available in standard TO-92S-3 and SOT-23-3 packages. Application • • • • • • • • • TO-92S-3 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 AH49H Jun. 2013 Rev. 1.2 BCD Semiconductor Manufacturing Limited Data Sheet LINEAR HALL EFFECT IC AH49H Pin Configuration Z3 Package (TO-92S-3) 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 AH49H Pin Description Pin Number Pin Name Function TO-92S-3 SOT-23-3 1 1 VCC Power supply pin 2 3 GND Ground pin 3 2 OUT Output pin Jun. 2013 Rev. 1.2 BCD Semiconductor Manufacturing Limited Data Sheet LINEAR HALL EFFECT IC AH49H Functional Block Diagram Figure 3. Functional Block Diagram of AH49H Ordering Information AH49H - G1: Green Circuit Type Blank: Bulk TR: Tape & Reel Package Z3: TO-92S-3 N: SOT-23-3 Package TO-92S-3 SOT-23-3 Temperature Range -40 to 105°C Part Number AH49HZ3-G1 AH49HNTR-G1 Marking ID Packing Type 49HG Bulk GT7 Tape & Reel BCD Semiconductor's Pb-free products, as designated with "G1" in the part number, are RoHS compliant and green. Jun. 2013 Rev. 1.2 BCD Semiconductor Manufacturing Limited Data Sheet LINEAR HALL EFFECT IC AH49H Absolute Maximum Ratings (Note 1) Parameter Symbol Value Unit VCC 10 V VCC_INST 50 V Supply Voltage Instantaneous Supply Voltage TO-92S-3 400 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 Mode) 400 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. 2013 Rev. 1.2 BCD Semiconductor Manufacturing Limited Data Sheet LINEAR HALL EFFECT IC AH49H Electrical Characteristics VCC=3.3V, TA=25°C, unless otherwise specified. Parameter Symbol Supply Current Quiescent Output Voltage Output Voltage Sensitivity Output Voltage Span Output Resistor Linear Magnetic Range Conditions ICC VNULL B=0 (Gauss) VSEN B=±600 (Gauss) VOUT S ROUT B Min Typ Max Unit 1.2 2 3.2 mA 1.45 1.7 1.85 V 30 Bandwidth=10Hz to 10kHz Output Noise 0.33 mV/Gauss 0.85 to 2.6 50 ±3000 V Ω Gauss 90 70 μV Transferring Characteristics (VCC=3.3V) When there is no outside magnetic field (B=0Gauss), the quiescent output voltage is one-half the supply voltage in general. For TO-92S-3 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-3, 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-3 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 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. Figure 4. Transferring Characteristic of AH49H North Pole South Pole For TO-92S-3 For SOT-23-3 Figure 5. Magnetic Characteristic of AH49H Jun. 2013 Rev. 1.2 BCD Semiconductor Manufacturing Limited Data Sheet LINEAR HALL EFFECT IC AH49H Typical Performance Characteristics 5.0 2.8 4.5 2.4 4.0 3.5 2.0 VOUT (V) ICC (V) 3.0 2.5 2.0 1.5 1.6 1.2 1.0 VCC=3.3V B=0Gauss No Load 0.5 No Load 0.8 0.0 2 3 4 5 6 7 -4000 8 -2000 0 2000 4000 B (Gauss) VCC (V) Figure 6. Supply Current vs. Supply Voltage Figure 7. Output Voltage vs. Magnetic Field 3 5 4 2 VOUT (V) VOUT (V) 3 2 1 VCC=3.3V B=0Gauss No Load 1 B=0Gauss No Load 0 0 2 3 4 5 6 7 VCC (V) Figure 8. Output Voltage vs. Supply Voltage Jun. 2013 Rev. 1.2 8 -40 0 40 80 120 o TA ( C) Figure 9. Output Voltage vs. Ambient Temperature BCD Semiconductor Manufacturing Limited Data Sheet LINEAR HALL EFFECT IC AH49H Typical Performance Characteristics (Continued) 450 SOT-23-3 TO-92S-3 400 350 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. 2013 Rev. 1.2 BCD Semiconductor Manufacturing Limited Data Sheet LINEAR HALL EFFECT IC AH49H Mechanical Dimensions TO-92S-3 Unit: mm(inch) ° ° Jun. 2013 Rev. 1.2 BCD Semiconductor Manufacturing Limited Data Sheet LINEAR HALL EFFECT IC AH49H Mechanical Dimensions (Continued) Unit: mm(inch) 0.300(0.012) 0.600(0.024) 2.650(0.104) 3.000(0.118) 1.500(0.059) 1.700(0.067) SOT-23-3 1.450(0.057) MAX. ° ° Jun. 2013 Rev. 1.2 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. 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