OH49 F-S OH49F-S LINEAR HALL-EFFECT IC Order information PN OH49F-S Operating Temperature -40～105℃ Package SOT23 3000pcs/reel General Description The OH49F-S is a small, versatile linear Hall-effectdevice 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 -40℃ to105℃, appropriate for commercial, consumer and industrial applications. Features · Miniature Construction · Power Consumption of 3mA 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 -40℃ to 105℃ · Responds to Either Positive or Negative Gauss · The Maximum Instantaneous Supply Voltage up to 50V · HIgh ESD Rating: Human Body Model: 6000V, Machine Model: 600V Typical applications Functional Block Diagram · Current Sensing · Motor Control · Position Sensing · Magnetic Code Reading · Ferrous Metal Detector · Vibration Sensing · Liquid Level Sensing · Weight Sensing Nanjing Ouzhuo Technology co., Ltd Tel：86-25-52312738，86-25-83247886 Page 1 www.ohhall.com FAX: 86-25-52312738 www.zbling.com E-mail: [email protected] OH49 F-S OH49F-S LINEAR HALL-EFFECT IC Absolute Maximum Rating Supply Voltage Instantaneous Supply Voltage Operating Temperature Range Storage Temperature Range VCC·························10V VCC_INST···························. 50V TA······················· -40～125℃ TS ·························-50～150℃ ESD (Human Body Model) 6000V ESD(Machine Model) 600V Note: 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 extendedperiods may affect device reliability. Recommended Operating Conditions Supply Voltage Operating Temperature Range Nanjing Ouzhuo Technology co., Ltd Tel：86-25-52312738，86-25-83247886 VCC·························3-8V TA······················· -40～105℃ Page 2 www.ohhall.com FAX: 86-25-52312738 www.zbling.com E-mail: [email protected] OH49 F-S OH49F-S LINEAR HALL-EFFECT IC Electrical & Magnetic Characteristics (TA=25℃,Vcc=5.0V) Parameter Symbol Supply Current Icc Quiescent Output Voltage VNULL Output Voltage Sensitivity S Output Voltage Span VOS Output Resistor RO Magnetic Field Range B Conditions Min Typ Max Unit 2 3 4 mA @ B=0GS 2.25 2.5 2.75 V B=0GS to ±600GS 1.7 2.1 2.5 mV/GS 1.0 to (VCC-1.0) 0.8 to (VCC-0.8) 60 ±500 Linearity of Span Output Noise BW=10Hz to 10kHz V 120 Ω ±800 GS 0.7 % 90 μV 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 Hall effect 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. Nanjing Ouzhuo Technology co., Ltd Tel：86-25-52312738，86-25-83247886 Page 3 www.ohhall.com FAX: 86-25-52312738 www.zbling.com E-mail: [email protected] OH49 F-S OH49F-S LINEAR HALL-EFFECT IC Package (unit :mm) Nanjing Ouzhuo Technology co., Ltd Tel：86-25-52312738，86-25-83247886 Page 4 www.ohhall.com FAX: 86-25-52312738 www.zbling.com E-mail: [email protected]