WSH137 Linear Hall Effect Sensor IC Features: Wide operating range 3.0~12V, -40℃~125℃ Flat Response to 23kHz High Sensitivity 4.3mV/G Wide sensible magnetic field range on different supplied voltage ±450 Gauss on 5V supplied voltage ±1,000 Gauss on 12V supplied voltage. Low operating current 3mA Two package styles TO-92S/SOT-23 available. Built-in temperature compensated circuit to minimize temperature’s effect Functional Description : The W137 integrates Hall sensing element, linear amplifer, sensitivity controller and emitter follower output stage.It accurately tracks extremely small change in magnetic flux density –generally too small to operate Hall effect switch. W137 can be applied as current sensor, tooth sensor, proximity detectors and motion detectors. As sensitive monitor of magnetic flux, it can effectively measure a system’s performance with negligible system loading while providing isolation from contaminated and electrically noisy environments. Winson reserves the right to make changes to improve reliability or manufacturability. ©Winson, 2015/5/7 WSH137 Electrical Characteristics: Characteristic Supply Voltage Symbol Vcc Supply Current Isupply Quiescent Vout V0G Sensitivity △Vout Bandwidth BW Measurable Guass Range Temperature Drift MGR △Vout (T=+25˚C, Vdd=5.0V ) Test Conditions Min 3.0 ─ Typ B=0 Gauss B=0 G (A Grade) B=0 G (B Grade) B= 0 to ± 400 G Vdd=5V Vdd=12V B=0 Gauss ─ Max 12 Units V ─ 3.0 5.0 mA 2.45 2.4 3.85 2.5 2.5 4.3 2.55 2.6 4.75 V mV/G － 23 － kHz － － － ±450 ±1000 ±0.5 － － － Gauss mV/℃ 1.All output-voltage measurements are made with a voltmeter having an input impedance of at least 100kΩ 2. Do not apply any load on output pin, it will degrade IC performance. Winson reserves the right to make changes to improve reliability or manufacturability. ©Winson, 2015/5/7 WSH137 Package Information: TO92S: SOT23: Winson reserves the right to make changes to improve reliability or manufacturability. ©Winson, 2015/5/7 WSH137 Characteristics Diagram: WSH137 Vout vs. Magnetic field with Vdd 5V 6.000 5.000 y = 0.004x + 2.5363 R² = 0.9993 4.000 V 3.000 2.000 1.000 0.000 -1000 -800 N -600 -400 -200 0 G 200 400 600 800 S 1000 WSH137 Vout vs. Magnetic field with Vdd 3.3V 3.500 3.000 y = 0.0033x + 1.7037 R² = 0.9988 2.500 V 2.000 1.500 1.000 0.500 0.000 -700 -600 N -500 -400 -300 -200 -100 0 100 200 300 400 500 G Winson reserves the right to make changes to improve reliability or manufacturability. ©Winson, 2015/5/7 600 S 700 WSH137 WSH137 Sensitivity vs. Vdd 6.00 5.50 5.00 4.50 mV/G 4.00 3.50 3.00 2.50 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.0 10.0 11.0 12.0 13.0 V WSH137 Current vs. Vdd 5.500 5.000 4.500 mA 4.000 3.500 3.000 2.500 2.000 3.0 4.0 5.0 6.0 7.0 8.0 9.0 V Winson reserves the right to make changes to improve reliability or manufacturability. ©Winson, 2015/5/7