Operation
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SLYU047A – April 2018 – Revised May 2018
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Copyright © 2018, Texas Instruments Incorporated
DRV5055EVM
2
Operation
2.1
Quick Start Setup
The following instructions describe how to set up and use the DRV5055EVM.
Step 1.
Insert the USB cable into the EVM onboard USB receptacle.
Step 2.
For proper calibration, make certain that there are no magnets within a few feet of the EVM
when the EVM powers up.
Step 3.
Plug the USB cable into any USB power adapter (for example, laptop, desktop, power bank,
and so on). LED D13 on the far bottom right of the board indicates the board is powered,
calibrated, and is taking sample measurements from the DRV5055A1 (default EVM startup
device).
2.2
Measurements
The DRV5055EVM measures a magnetic field with multiple devices and the respective gain variants.
Push-button S1 selects the different gain variants of the DRV5055 devices. The devices are arranged
such that gain variants increase sequentially from right to left. The LCD displays the measurement
corresponding to the selected device. The measurement format is adjusted by the slide switch labeled
Display Mode
(K1).
Step 1.
Click the
Device Select Switch
until an LED indicates the device of interest is selected.
Step 2.
Adjust the
Display Mode
slide switch to the measurement format of interest.
Step 3.
Introduce magnetic stimulus (for example, the magnet included in the evaluation kit).