سنسور و مبدل سنسور جریان

Product Attributes

Introduction

The CC6905 device is a high-performance Hall-effect current sensor that can measure DC or AC current more efficiently, and has the advantages of high accuracy, excellent linearity and temperature stability in industrial, consumer, and communication equipment. The CC6905 device consists of a high-precision, low-noise linear Hall integrated circuit and a low-resistance main current conductor. When current flows through the copper conduction path, a magnetic field generates. Meanwhile the Hall circuit converts this magnetic signal to output voltage signal. Internal copper conductor’s resistance is typical 0.5mΩ, which provides much less power loss than the universal resistor sampling method. Otherwise, its internal inherent insulation provides 100VRMS insulation withstand voltage between the input current path and the secondary circuit. The Hall circuit based on BiCMOS process integrates a differential Hall sensor, chopper amplifier, variable gain amplifier, output polarity/sensitivity/offset, oscillator, filter, zero reference output, overcurrent output, and amplifier buffer output and so on. The sensor adopts linear Hall sensor temperature compensation technology, which has high temperature stability characteristics. The differential common-mode suppression circuit integrated in CC6905 can make the chip output unaffected by external interference magnetic signals. The integrated dynamic offset elimination circuit makes the sensitivity of the chip independent of external stress and chip packaging stress. CC6905 is available in SOP8 and QFN-3x3-12 package. It’s operating ambient temperature range is -40~125℃. Comply with RoHS requirements.

Features

• Built-in VREF Output, External VREF Input:
  • Built-in VREF Output: VOE is programmable to <5mV
  • External VREF Input: VOUT quiescent output voltage is consistent with it
• Measuring current range: 5A, 10A, 20A, 30A, 40A, 50A
• High bandwidth (230kHz), Low noise, Single-end analog output
• 100VRMS isolation voltage between pins 1 - 4 and 5 - 8
• Less power loss, internal conductor’s resistance is 0.5mΩ (SOP8) or 0.4mΩ (QFN-3x3-12)
• Response time tRES = 1.5us
• Room temperature error ±1%, sensitivity temperature drift up to ±2.5%
• Good temperature stability, using Hall signal amplification circuit and temperature compensation circuit
• Differential Hall structure, strong resistance to external magnetic interference
• Strong resistance to mechanical stress, magnetic parameters will not be shifted by external pressure
• Fixed output
• ESD (HBM) 4kV, ESD (CDM) 1kV, LU 200mA

Applications

• Base Station
• Air-conditioner
• Power Supply
• Control Board