سنسور و مبدل سنسور جریان

Product Attributes

Introduction

CC6905 is a high-performance Hall-effect current sensor capable of measuring DC or AC currents with high accuracy, excellent linearity, and good temperature stability. It is widely used in industrial, consumer, and communications equipment.

The CC6905 consists of a high-precision, low-noise linear Hall IC and a low-resistance primary current conductor. The input current flows through an internal 0.5mΩ conductor, generating a magnetic field that induces a corresponding electrical signal in the Hall circuit. This signal is then processed by an internal signal conditioning circuit and output as a voltage signal. The low-resistance conductor minimizes power loss and heat dissipation. The inherent internal insulation provides 100V_RMS isolation voltage between the primary and secondary circuits.

The CC6905 is manufactured using advanced BiCMOS technology and integrates a differential Hall sensor, chopper amplifier, variable gain amplifier, output polarity/sensitivity/offset adjustment, oscillator, filter, zero-point reference output, overcurrent output, and amplifier buffer output. The sensor employs linear Hall sensor temperature compensation technology for superior temperature stability.

The integrated differential common-mode rejection circuit ensures the device output is immune to external interference magnetic signals. The integrated dynamic offset cancellation circuit ensures that the chip sensitivity is unaffected by external mechanical stress and package stress.

Features

• Dual reference modes: built-in VREF output and external VREF input:
  • Built-in VREF output mode: V_OE programmable to <5mV
  • External VREF input mode: V_OUT static output voltage tracks VREF
• Wide measurement range: 5A, 10A, 20A, 30A, 40A, 50A multiple current ranges available
• High bandwidth (230kHz), low noise, single-ended analog output
• 100V_RMS isolation voltage between conductor pins and signal pins
• Low loss: SOP8 package conductor resistance 0.5mΩ, QFN-3×3-12 package conductor resistance 0.4mΩ
• Step response time 1.5μs
• Room temperature error ±1%, sensitivity temperature drift up to ±2.5%
• Excellent temperature stability with Hall signal amplification and temperature compensation circuits
• Differential Hall structure, strong immunity to external magnetic interference
• High mechanical stress resistance, magnetic parameters unaffected by external pressure
• Fixed sensitivity output
• ESD (HBM) 4kV, ESD (CDM) 1kV, LU 200mA

Applications

• Base station
• Air conditioner
• Power supply
• Control board