DRV5056: DRV5056

Hi Pushpa,

Thanks for posting to the Sensors forum and welcome to E2E!

80mm is a fairly long distance, but ultimately sensing distance will depend on the size and strength of the magnet and the location of the sensor. I recommend taking a look at our free online simulation tool, TI Magnetic Sense Simulator (TIMSS) to determine initial feasibility of your design. TIMSS is available here: webench.ti.com/.../ 

You can quickly select magnet motion, shape, and sensor and configure the additional magnet and sensor settings under the "Magnet" and "sensor" settings in the simulation environment. The output plots will provide an idea of the magnetic flux density and device output under the simulation scenario. Please let me know if you have additional questions.

Best regards,

Jesse

Hi Jesse,

Thank you for your Feedback

Could you please suggest any IC which can work at least >= 50mm

Best Regards

Pushpa A

Hi Pushpa,

Again, sensing distance is not only dependent on the sensor selected. It is dependent on the magnet being used, the motion of the magnet, and the location of the sensor as well. Hall-effect sensors are not defined based on a sensing distance. They are defined based on magnetic sensitivity and corresponding magnetic sensing range. This is what you will see specified in datasheets. For example:

The unipolar ratiometric DRV5056A4/Z4 variants have a linear magnetic sensing range of ~158mT when operated at 5V.

The bipolar ratiometric DRV5055A4/Z4 variants have a linear magnetic sensing range of ~±176mT when operated at 3.3V.

The bipolar ratiometric TMAG5253BA4 variant has a linear magnetic sensing range of ~±160mT.

Best regards,

Jesse