سنسور و مبدل سنسور جریان

Product Attributes

Introduction

The MagnTek MT9223 product series is a fully integrated Hall Effect-based isolated linear current sensor device family designed for AC or DC current sensing in industrial, commercial, and communications systems. Each of the MT9223 consists of a precise, lowoffset, linear Hall circuit with a low-resistance current conductor path located near the surface of the die. Applied current flowing through this low-resistance current conductor path generates a magnetic field that the Hall IC converts into a proportional voltage. The current is sensed differentially in order to reject common-mode fields, improving accuracy in magnetically noisy environments. Device accuracy is optimized through the close proximity of the magnetic field to the Hall transducer. A precise, proportional voltage is provided by the lowoffset, chopper-stabilized BCD Hall IC, which has been accurately calibrated when it is manufactured. The output of the device has a positive slope (greater than 0) when an increasing current flows through the primary current conduction path (from pins 1 and 2, to pins 3 and 4). The internal resistance of this conductive path is 1.2 mΩ typical, providing low-power loss. The terminals of the conductive path are electrically isolated from the signal leads (pins 5 through 8). This allows the MT9223 current sensor IC to be used in high-side current sense applications without use other costly isolation techniques. The MT9223 family provides SOP-8 package to customers, The package is RoHS compliant.

Applications

• Low-power inverter current sensing
• Motor phase and rail current sensing
• PV String Inverters
• Chargers and Converters
• Switching Power Supplies
• Overcurrent Protection