Magneto 10 Click Board™

Product Code: MIKROE-4866

How Does The Magneto 10 Click Board™ Work? The Magneto 10 Click Board™ as its foundation uses the MLX90392, a three-axis micropower magnetic field sensor for low-noise applications based on a proprietary Triaxis technology from Melexis Technologies. The MLX90392 comes in a version of a ±5mT full-scale range for leveraging Melexis' patented Triaxis Hall technology to deliver low noise and best-in-class accuracy. It offers a 16-bit output proportional to the magnetic flux density sensed along the XYZ axes and temperature output signal. It also features a Power-Down mode that helps save energy and maximize run-time in battery-powered applications. Whereas the ±5mT, the MLX90392 includes several operational modes, the sensitivity of 0.15µT/LSB and typical RMS noise down to 0.3µT. By selecting which axes are to be measured, the raw data can be used as input for further post-processing by an external MCU, making the device suitable for position sensing that requires a small magnetic range and precise position measurement where noise is a critical design parameter.

The MLX90392 also requires a supply voltage of 1.8V to work regularly. Therefore, a small LDO regulator, BH18PB1WHFV from Rohm Semiconductor, provides 1.8V out of mikroBUS™ power rails. This LDO cut power consumption by lowering its current consumption to approximately 2μA when the application is operating in the Standby state. The Magneto 10 Click Board™ communicates with MCU using a standard I2C 2-Wire interface that supports Standard and Fast Mode Plus operation. Since the sensor for operation requires a 1.8V logic voltage level only, this Click board™ also features the PCA9306 voltage-level translator from Texas Instruments. The I2C interface bus lines are routed to the dual bidirectional voltage-level translator, allowing this Click board™ to work with both 3.3V and 5V MCUs properly. The Magneto 10 Click Board™ can operate with both 3.3V and 5V logic voltage levels selected via the VCC SEL jumper. This way, it is allowed for both 3.3V and 5V capable MCUs to use the I2C communication lines properly. However, the Click board™ comes equipped with a library that contains easy-to-use functions and an example code that can be used, as a reference, for further development. SPECIFICATIONS Type Magnetic Applications Can be used for position sensing requiring a small magnetic range and precise position measurement where noise is a critical design parameter On-board modules MLX90392 - three-axis micropower magnetic field sensor for low-noise applications based on a proprietary Triaxis technology from Melexis Technologies Key Features Low power consumption, high precision, Triaxis Hall technology for best-in-class in noise, integrated temperature sensor, 16-bit digital magnetic and temperature output, selectable operational modes, and more Interface I2C Compatibility mikroBUS Click board size S (28.6 x 25.4 mm) Input Voltage 3.3V or 5V PINOUT DIAGRAM This table shows how the pinout on the Magneto 10 Click Board™ corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns). Notes Pin Pin Notes NC 1 AN PWM 16 NC NC 2 RST INT 15 NC NC 3 CS RX 14 NC NC 4 SCK TX 13 NC NC 5 MISO SCL 12 SCL I2C Clock NC 6 MOSI SDA 11 SDA I2C Data Power Supply 3.3V 7 3.3V 5V 10 5V Power Supply Ground GND 8 GND GND 9 GND Ground ONBOARD SETTINGS AND INDICATORS Label Name Default Description LD1 PWR - Power LED Indicator JP1 VCC SEL - Logic Level Voltage Selection 3V3/5V: Left position 3V3, Right position 5V MAGNETO 10 CLICK