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 (>VOQ) 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 1.2mΩ 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.

Features

• ±1.9% Typical Total Output Error
• ±0.5% Typical Linearity Over Temperature
• Fast Output Response Time: 4μs (typ.)
• 150kHz Signal Bandwidth
• 5.0V Single Supply Operation
• -40°C - 125°C Operating Temperature
• Primary Conductor Resistance: 1.2mΩ
• Sensing Current Range: (AC or DC) ±20A, ±25A, ±30A, ±40A, ±50A, +20A, +30A, +35A
• Output Voltage Proportional to AC or DC Current
• Ratiometric Output from Supply Voltage
• Extremely Stable Quiescent Output Voltage
• Low- Noise Analog Signal Path
• Device Bandwidth is Set via FILTER Pin
• Near Zero Magnetic Hysteresis
• Isolation Voltage: 2.4kVrms
• Dielectric Surge Isolation
• Package Option: SOP- 8
• 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