AC/DC 홀 전류 센서 -ACHS-7194
(HALL CURRENT 10 CLICK)
개요
- 본 제품은 AC/DC 홀 전류 센서 -ACHS-7194입니다.
- Hall-effect-based isolated linear current sensor ACHS-7194 을 탑재하고 있으며, ±40A 범위의 전류 측정이 가능합니다.
- I2C 인터페이스를 지원하며, 3.3V/5V 시스템과 사용이 가능합니다.
특징
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Type Current sensor Applications Can be used for AC or DC current-sensing in industrial, commercial, and communications systems On-board modules ACHS-7194 - fully integrated Hall-effect-based isolated linear current sensor designed for the current range of ±40A from Broadcom Limited Key Features Output voltage proportional to AC or DC currents, ratiometric output from supply voltage, high reliability, factory-trimmed for accuracy, stable output offset voltage, isolation voltage (3kVrms / 1 minute), and more Interface Analog,I2C Compatibility mikroBUS Click board size L (57.15 x 25.4 mm) Input Voltage 3.3V or 5V -
Hall Current 10 Click as its foundation uses the ACHS-7194, a Hall-effect current sensor that sends an analog voltage proportional to the magnetic field intensity caused by the current flowing through the primary input conductor from Broadcom Limited. Without a magnetic field, the output voltage is half of the supply voltage. The ACHS-7194 can detect both DC and AC designed for the current range of ±40A. Device accuracy is optimized across the operating ambient temperature through the close proximity of the magnetic signal to the Hall sensors.
The thickness of the copper conductor allows the survival of the device at high overcurrent conditions. The terminals of the conductive path are electrically isolated from the signal leads. This feature enables the ACHS-7194 to be used in applications requiring electrical isolation without optoisolators or other costly isolation techniques.
The ACHS-7194 also has a ratiometric output that means it changes proportionally to the supply voltage. Just like that, the output voltage, analog signal, can be converted to a digital value using MCP3221, a successive approximation A/D converter with a 12-bit resolution from Microchip, using a 2-wire I2C compatible interface, or can be sent directly to an analog pin of the mikroBUS™ socket labeled as AN. Selection can be performed by onboard SMD jumper labeled as ADC SEL to an appropriate position marked as AN and I2C.
With the MCP3221, data transfers at rates of up to 100kbit/s in the Standard and up to 400kbit/s in the Fast Mode. Also, maximum sample rates of 22.3kSPS with the MCP3221 are possible in a Continuous-Conversion Mode with a clock rate of 400kHz.
This Click board™ can operate with both 3.3V and 5V logic voltage levels selected via the VIO SEL jumper. This way, it allows both 3.3V and 5V capable MCUs to use the communication lines properly. However, the Click board™ comes equipped with a library containing easy-to-use functions and an example code that can be used, as a reference, for further development.