AH49HSC

AH49HSC LINEAR HALL EFFECT IC Describtion SOT-23-3 The AH49HSC is a small, versatile linear Halleffect 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℃ 1.VCC 2.OUT 3.GND Marking: AH49H The AH49HSC is available in standard SOT-23-3 packages. Features • • • • • • • • • • 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) Application • • • • • • • • • Current Sensing Motor Control Position Sensing Magnetic Code Reading Rotary Encoder Ferrous Metal Detector Vibration Sensing Liquid Level Sensing Weight Sensing www.pingjingsemi.com Revison：1.0 Mar-2020 1/5 AH49HSC LINEAR HALL EFFECT IC Functional Block Diagram Absolute Maximum Ratings (Note 1) Parameter Unit Symbol Value VCC 10 V VCC_INST 50 V Power Dissipation PD 230 mW 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 Supply Voltage Instantaneous Supply Voltage 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 Supply Voltage VCC 3 8 V Operating Temperature TOP -40 105 °C www.pingjingsemi.com Revison：1.0 Mar-2020 Unit 2/5 AH49HSC LINEAR HALL EFFECT IC Electrical Characteristics VCC=3.3V, TA=25°C, unless otherwise Parameter Supply Current Quiescent Output Voltage Output Voltage Sensitivity Output Voltage Span Output Resistor Linear Magnetic Range Symbol ICC Conditions VNULL B= 0 ( Gauss) VSEN B=±600 (Gauss) VOUT S ROUT B Output Noise Min. Typ. Max. Unit 1.45 1.7 1.85 V 1.2 0.33 30 Bandwidth=10Hz to 10kHz 3.2 2 mA mV/Gauss 0.85 to 2.6 50 ±3000 70 90 V Ω Gauss μV Transferring Characteristics (VCC=3.3V) recommended to work in such condition unless When there is no outside magnetic field (B=0Gauss), the quiescent output voltage is the output voltage magnitude is a main issue. The output signal can be capacitively coupled one-half the supply voltage in general. to a next-level amplifier for further amplifying For TO-92 package, if a south magnetic pole if the changing frequency of the magnetic field approaches the front face (the side with marking is high. 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-92, so the magnetic performance is also reversed. Therefore, if the reversed magnetic pole approaches the front face, the output is the same as TO-92 package. Greatest magnetic sensitivity is obtained with a supply voltage of 8V, but at the cost of increased Figure 4. Transferring Characteristic of AH49H supply current and a slight loss of output symmetry. So, it is not North Pole South Pole For TO-92 www.pingjingsemi.com Revison：1.0 Mar-2020 For SOT-23-3 3/5 AH49HSC LINEAR HALL EFFECT IC Typical Characteristics Curves 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 -4000 5 -2000 0 2000 4000 B (Gauss) VCC (V) 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 VCC (V) www.pingjingsemi.com Revison：1.0 Mar-2020 6 7 -40 0 40 80 120 o TA ( C) 4/5 AH49HSC LINEAR HALL EFFECT IC Package Outline SOT-23-3 Dimensions in mm A 10 12 0.95 0.35 0.127± 0.03 ± 0.01 1.6 2.8 ±0.1 ±0.05 2.92 ± 0.05 R0.15MAX `4X R0.15MAX `4X 1.26MAX 0.06 12 ± 0.05 ± 0.03 0.65 1.1 ± 0.05 10 Ordering Information Device Package Shipping AH49HSC SOT-23-3 3000PCS/Reel&Tape www.pingjingsemi.com Revison：1.0 Mar-2020 5/5