CQ-2064

[CQ-2064] CQ-2064 High-Speed Small-Sized Current Sensor Overview CQ-2064 is an open-type current sensor using a Hall sensor which outputs the analog voltage proportional to the AC/DC current. Quantum well ultra-thin film InAs (Indium Arsenide) is used as the Hall sensor, which enables the high-accuracy and high-speed current sensing. Simple AI-Shell package with the Hall sensor, magnetic core, and primary conductor realizes the space-saving and high reliability. Features - Bidirectional type - Electrical isolation between the primary conductor and the sensor signal - 5V single supply operation - Ratiometric output - Low variation and low temperature drift of sensitivity and offset voltage - Low noise output: 2.1mVrms (max.) - Fast response time: 1μs (typ.) - Small-sized package, halogen free Functional Block Diagram P Magnetic Core Amplifier Buffer VOUT Hall Sensor Compensation VSS Bias Unit EEPROM Unit VDD N DATA_IO SCLK Figure 1. Functional block diagram of CQ-2064 MS1263-E-05 -1- 2013/06 [CQ-2064] Circuit Blocks Circuit Block Hall Sensor Amplifier Buffer Compensation Bias Unit EEPROM Unit Magnetic Core Table 1. Explanation of circuit blocks Function Hall element which detects magnetic flux density generated from the measured current. Amplifier of Hall element’s output. Output buffer with gain. This block outputs the voltage (VOUT) proportional to the current applied to the primary conductor. Compensation circuit which adjusts the temperature drifts of s...