Magnetic Sensors For 3D Measurements

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Looking forward to meet the requirement of consumer and industrial applications, accurate 3D measurements or angular measurements with low power consumption, such as joysticks; control elements used for white goods and multi-function knobs Infineon has announced the launch of the new TLV493D-A1B6 a low-power-consumption magnetic sensor. These sensors are contactless position sensors with high temperature stability of magnetic threshold enabling the systems to become smaller, more accurate and robust.

To perform magnetic measurements and deliver low power consumption the sensor can be set in one of five different power modes which can be changed during the operation. The release refers to two different power modes that allow delivering low power. In Power Down mode. the sensor only requires 7nano Ampere supply current. Whereas, in Ultra Low Power Mode the sensor performs a magnetic measurement every 100 milliseconds (10Hz) resulting in a current consumption of 10µAmpere. The release iterates that the time between measurement cycles can be set flexibly allowing system specific solutions. Using the sensor with continuous measurements, the maximum power consumption is only 3.7mAmpere.

According to the media release, “The TLV493D-A1B6 is highly accurate 3D sensor with extremely low power consumption in a small 6-pin TSOP package. The 3D sensor TLV493D-A1B6 detects all three dimensions of a magnetic field. Using lateral hall plates for the z direction and vertical Hall plates for the x and y direction of the magnetic field, the sensor can be used in a large magnetic field range of +/- 150mT (milli Tesla) for all three dimensions. This allows measuring and covering a long magnet movement. The TLV493D-A1B6 provides 12-bit data resolution for each measurement direction. This allows a high data resolution of 0.098mT per bit (LSB) so that even the smallest magnet movements can be measured.”

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Adding further the release states, “The TLV493D-A1B6 uses a standard I²C digital protocol to communicate with external microcontrollers. It is possible to operate the sensors in a bus mode to eliminate additional wiring cost and efforts. The sensor can be operated on supply voltages between 2.7V – 3.5V and in a temperature range between -40°C to 125°C.”

The release also mentions the development support tool that enables a fast design-in process. The evaluation board “3D Magnetic 2Go” is in combination with the free 3D sensor software. Further, the board applies the Infineon 32-bit microcontroller XMC1100 that uses the ARM Cortex-M0 processor allowing building your own application and gadget with the 3D Magnetic Sensor 2Go.

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