AC Current click can measure alternating currents up to 30A and it features the MCP3201 ADC (analog to digital) converter and the MCP607 CMOS Op Amp, both from Microchip.
The click is designed to run on either 3.3V or 5V power supply. It communicates with the target MCU over an SPI interface, and the AN pin on the mikroBUS™ line.
AC Current click can measure alternating currents up to 30A and it features the MCP3201 ADC (analog to digital) converter and the MCP607 CMOS Op Amp, both from Microchip. The click is designed to run on either 3.3V or 5V power supply. It communicates with the target MCU over an SPI interface, and the AN pin on the mikroBUS™ line.
AC Current click can only be used for sensors with voltage output (30A input current – 1V output voltage amplitude). If someone wants to measure current with a sensor for a different range (10A or 100A), then it is necessary to change the multiplication constant in firmware.
Note: This click board can be used for measuring current from a High-Voltage alternating source, so it is important to know that there is danger from electric shock.
Note: AC Current click does not include the non-invasive AC current sensor.
MCP3210 ADC converter is a 12-bit Analog-to-Digital converter. The device provides a single pseudo-differential input.
The converter is capable of sample rates of up to 100 ksps at a clock rate of 1.6 MHz. The MCP3201 device operates over a broad voltage range (2.7V-5.5V). Low-current design permits operation with typical standby and active currents of only 500 nA and300 μA, respectively.
MCP607 operational amplifier is unity-gain stable with a low offset voltage (250 μV, maximum). Performance characteristics include rail-to-rail output swing capability and low input bias current (80 pA at +85°C, maximum).
There is an Analog output for users who want to side step the onboard ADC and use an ADC from a microcontroller instead.
To measure current using this click it is necessary to put one wire through the sensor, not both.
Applications One phase measuring from the power line (110/220V) or some other alternating voltage/current source, power consumption measurement, current monitoring (over the analog output).