MT9526 product family is a fully integrated Hall-effect based isolated linear current sensor chip for AC or DC current sensing in industrial, commercial, and communications systems. Each MT9526 consists of a sophisticated, low-offset linear Hall circuit with a built-in current conductor path with low insertion resistance. The impressed current flowing through the path of this low-resistance current conductor generates a magnetic field, which the chip converts into a voltage signal output proportional to the input current. In order to effectively suppress the external common-mode magnetic field, differential current sensing techniques are used in the design, which improves accuracy in magnetic noise environments. The accuracy of the chip is improved by optimizing the magnetic signal-to-noise ratio.
Based on the low offset of the BCD process, the chopper-stabilized Hall chip provides an accurate proportional voltage that is precisely calibrated at the time of manufacture. The output of the chip has a positive slope (> voQ) as the applied current flows through the internal current conduction path (from pins 1 and 2 to pins 3 and 4). The conductive path has a typical internal resistance of 0.27mQ, providing high current carrying capacity while achieving low energy consumption. The terminals of the conductive path (pins 1 through 4) are galvanically isolated from the signal lines (pins 5 through 12). This allows the MT9526 current sensor IC to be used in high-end current sensing applications without the need for additional expensive isolation techniques.
The MT9526 series offers customers a thickened SOP-16WA package that is RoHS compliant.
Product Features
• Source side resistance (mΩ)：0.27
• Dielectric strength (Vrms)：5000
• Creepage distance (mm)：8.8
• Working voltage (V)：4.5~5.5
• Bandwidth (KHz)：250
• Response time (us typ.)：<2.2
• Working temperature (℃)：-40~150
• Static output (V)：2.5
• Sensitivity (mV/A)：40
• Current range (A)：-50~50
• Packaging：SOP-16WA
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