CQ-209D - Asahi Kasei Microsystems

CQ-209D High-Speed Small-Sized Current Sensor

No. Name I/O Description 1 DATA_IO - Test pin (connect to ground) 2 VDD - Power supply pin (5V) 3 VSS - Ground pin (0V) 4 VOUT O Analog output pin 5 SCLK - Test pin (connect to ground) 6P 7N I Primary current pin (+) I Primary current pin (−) MS1374-E-03 -2- 76 CQ-209D (Top View) 1 2 345 Figure 3. Pin-out diagram 2014/08 [CQ-209D] Absolut.

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 surface mount package, halogen free Functional Block Diagram P Magnetic Core Amplifier Buffer VOUT Hall Sensor Compensation VSS Bias Unit EEPROM Unit VDD DATA_IO SCLK N Figure 1. Functional block diagram of CQ-209D MS1374-E-03 -1- 2014/08 [CQ-209D] Circuit Blocks Circuit Block.