سنسور و مبدل سنسور جریان

Product Attributes

Introduction

The MagnTek MT9222 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 MT9222 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 (>0) when an increasing current flows through the primary current conduction path (from pins 1, 2, 3 and 4, to pins 5, 6, 7 and 8). The internal resistance of this conductive path is 0.85 mΩ typical, providing low-power loss. The terminals of the conductive path are electrically isolated from the signal leads (pins 9 through 16). This allows the MT9222 current sensor IC to be used in high-side current sense applications without use other costly isolation techniques. The MT9222 family provides SOP-16W package to customers, The package is RoHS compliant.

Features

• ±0.5% Typical Linearity Over Temperature
• Fast Output Response Time: 4 μs (typ.) 150kHz Signal Bandwidth
• 5.0V Single Supply Operation
• -40°C ~ 125°C Operating Temperature
• Primary Conductor Resistance: 0.85 mΩ
• Sensing Current Range: (AC or DC) ±20A, ±25A, ±30A, ±50A, ±65A, +40A, +50A
• Output Voltage Proportional to AC or DC Current
• Ratiometric Output from Supply Voltage
• Extremely Stable Quiescent Output Voltage
• Device Bandwidth is Set via FILTER Pin
• Near Zero Magnetic Hysteresis
• Safety Parameters: (CB Certificate Number: DK-116879-UL)
  • 4.8kVrms 1min Dielectric Surge Isolation
  • 1097Vrms, 1550VDC or VPK Working Voltage
  • 7.5 mm Clearance Distance
  • 8.2 mm Creepage Distance
• Package Option: SOP-16W
• RoHS Compliant: (EU)2015/863

Applications

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