WCS3740

Winson reserves the right to make changes to improve reliability or manufacturability.

© Winson, 2017/12/20

Hall Effect Base Linear Current Sensor

Features:

 Low noise analog signal path

 125

μΩ internal conductor resistance

 Output voltage proportional to AC and DC current

 Min. sensing current 0~40A at 5V voltage supply

 High sensitivity 32mV/A

 Wide operating voltage range 3.0~12V

 Low operating current 3mA

 Nearly zero magnetic hysteresis

 Ratiometric output from supply voltage

 23K Hz Bandwidth

Functional Description :

The Winson WCS3740 current sensor 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 WCS3740 consists of a precise, low-temperature drift linear hall

sensor IC with temperature compensation circuit and a current path with

125

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 WCS3740 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.