WCS2702 Winson reserves the right to make changes to improve reliability or manufacturability Winson 2013 3 29 Hall Effect Base Linear Current Sensor Features Low noise analog signal path 98 m internal conductor resistance Output voltage proportional to AC and DC current Min sensing current 0 2 0A at 5V voltage supply High Sensitivity 1 mV mA Wide operating voltage range 3 0 12 V Low operating current 3mA Nearly zero magnetic hysteresis Ratiometric output from supply voltage 10K Hz bandwidth Functional Description The Winson WCS2702 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 WCS2702 consists of a precise low temperature drift linear hall sensor IC with temperature compensation circuit and a current path with 98 m 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 WCS2702 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 WCS2702 Winson reserves the right to make changes to improve reliability or manufacturability Winson 2013 3 29 Function Block WCS2702 Winson reserves the right to make changes to improve reliability or manufacturability Winson 2013 3 29 Electrical Characteristics T 25 C Vdd 5 0V Characteristic Symbol Test Conditions Min Typ Max Units Supply Voltage Vcc 3 0 12 V Supply Current Isupply IP 0 A 3 5 6 0 mA Zero Current Vout V0G IP 0 A 2 42 5 2 6 V Primary Conductor Resistance Rprimary IP 2 A 98 m Sensitivity Vout IP 2 0 A 0 851 0 1 15 V A Bandwidth BW 10 kHz Vdd 5V DC current 2 0 Measurable Current Range MCR Vdd 5V AC RMS 1 4 A Temperature Drift Vout Ip 0 A 0 5 mV All output voltage measurements are made with a voltmeter having an input impedance of at least 100k Characteristic Diagrams WCS2702 Sensitivity standardization 30 V S Temperature 0 00 0 20 0 40 0 60 0 80 1 00 1 20 數列1 0 822 0 881 0 925 0 959 0 982 0 995 1 001 1 000 0 991 0 974 0 953 0 929 0 901 0 868 0 834 0 792 0 752 40 30 20 100102030405060708090100110120 WCS2702 Vout V S IP y 0 1018x 2 3711 Best linear equations R 0 999 the goodness of fit of the trend line 2 2 5 3 3 5 4 4 5 5 00 10 20 30 40 50 60 70 80 911 11 21 31 41 51 61 71 81 92 A V WCS2702 Winson 2013 3 29 Winson reserves the right to make changes to improve reliability or manufacturability WCS2702 Vout V S IP y 0 0983x 2 5923 Best linear equations R 0 9996 the goodness of fit of the trend line 0 0 5 1 1 5 2 2 5 3 00 10 20 30 40 50 60 70 80 911 11 21 31 41 51 61 71 81 92 A V WCS2702 Sensitivity V S Supply Voltage 0 0 2 0 4 0 6 0 8 1 1 2 1 4 3456789101112 V V A WCS2702 Sensitivity V S Supply Voltage 3V 5V 0 0 2 0 4 0 6 0 8 1 1 2 1 4 33 23 43 63 844 24 44 64 85 V V A WCS2702 Winson reserves the right to make changes to improve reliability or manufacturability Winson 2013 3 29 Package Information