WCS1750

WCS1750 Hall Effect Base Linear Current Sensor Features: Low noise analog signal path 120 μΩ internal conductor resistance Output voltage proportional to AC and DC current Min. sensing current 60A at 5V voltage supply High Sensitivity 33mV/A Wide operating voltage range 3.0~12 V. Low operating current 3mA Nearly zero magnetic hysteresis. Ratiometric output from supply voltage 23K Hz bandwidth Functional Description : The Winson WCS1750 provides economical and precise solution for both DC and AC current sensing in industrial, commercial and communications systems. The unique package allows for easy implementation by the customer. Typical applications include motor control, load detection and management, over-current fault detection and any intelligent power management system etc… The WCS1750 consists of a precise, low-temperature drift linear hall sensor IC with temperature compensation circuit and a current transformer with 120 μΩ typical internal conductor resistance. This extremely low resistance can effectively reduce power loss, operating temperature and increase the reliability greatly. Applied current flowing through this conduction path generates a magnetic field which is sensed by the integrated Hall IC and converted into a proportional voltage. The terminals of the conductive path are electrically isolated from the sensor leads. This allow the WCS1750 current sensor to be used in applications requiring electrical isolation without the use of opto-isolators or other costly isolation techniques and make system more competitive in cost. Winson reserves the right to make changes to improve reliability or manufacturability. ©Winson, 2009/9/9 WCS1750 Function Block: Electrical Characteristics: Characteristic Supply Voltage Supply Current Zero Current Vout Primary Conductor Resistance (T=+25˚C, Vdd=5.0V ) Min Typ Max Units 3.0 ─ 2.4 ─ ─ 3.5 2.5 120 12 6.0 2.6 ─ V mA V μΩ ─ IP =0 A IP =0 A IP =10 A Symbol Test Conditions Vcc Isupply V0G Rprimary Winson reserves the right to make changes to improve reliability or manufacturability. ©Winson, 2009/9/9 WCS1750 Sensitivity Bandwidth Measurable Current Range Temperature Drift △Vout BW MCR △Vout Vdd=5V Vdd=12V Ip =0 A IP= +10 A IP= -10 A +29 +32 +35 -30 -33 -36 23 － － － － － ±60 ±120 ±0.5 － － － mV/A kHz A mV/℃ All output-voltage measurements are made with a voltmeter having an input impedance of at least 100kΩ Normalized Sensitivity (by 30oC) vs. Temperature 1.20 1.00 0.80 Factor 0.60 0.40 0.20 0.00 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 oC Package Information: Winson reserves the right to make changes to improve reliability or manufacturability. ©Winson, 2009/9/9