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CQ-3303 Datasheet(PDF) 3 Page - Asahi Kasei Microsystems |
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CQ-3303 Datasheet(HTML) 3 Page - Asahi Kasei Microsystems |
3 / 19 page [CQ-3303] 014003802-E-01 2014/11 - 3 - 4. Block Diagram and Functions Figure 1. Functional block diagram of CQ-3303 Table 1. Explanation of circuit blocks Circuit Block Function Primary Conductor Conductor which the measured current is applied. Hall Sensor Hall element which detects magnetic flux density generated from the measured current. Amplifier Amplifier of Hall element’s output. Buffer Output buffer with gain. This block outputs the voltage (VOUT) proportional to the current applied to the primary conductor. Compensation Compensation circuit which adjusts the temperature drifts of sensitivity and zero-current output voltage. Bias Unit Drive circuit for Hall element. EEPROM Unit Non-volatile memory for setting adjustment parameters. The parameters are adjusted before the shipment. N Hall Sensor Amplifier Buffer Compensation Bias Unit EEPROM Unit VOUT TEST3 TEST1 VDD VSS P TEST2 |
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