TMAG5123EVM Hardware
4
SLYU056 – June 2020
Copyright © 2020, Texas Instruments Incorporated
TMAG5123EVM
2.1
Features
The layout of the TMAG5123EVM printed-circuit board (PCB) is designed to provide the following
features:
•
Burn-in test socket and precision 3D printed cradle for precise distance evaluation of in-plane sensors
•
Provides LED feedback to the user to quickly determine output state from the TMAG5123
•
Conveniently powered from a common micro-USB connector for quick prototyping
3
Quick Start Setup and Use
The following instructions are to set up and use the TMAG5123EVM:
1. Power up the EVM using either of the following methods:
a. USB power:
i.
Insert the micro USB cable into the EVM onboard USB receptacle J1.
ii. Plug the USB cable into any USB power source (for example: laptop, desktop, power bank,
and so forth).
b. Variable power supply
i.
Set the power supply voltage to desired setting between 2.5 V and 38 V. Do not turn on the
power yet.
ii. Connect the power supply V– terminal to the black GND test point on the EVM.
iii. Connect the power supply V+ terminal to the red VCC test point on the EVM.
iv. Turn on the power supply.
3.1
Measurements
The TMAG5123EVM enables the user to evaluate the functionality of the TMAG5123 Hall-effect sensor
using either a common USB-micro connector or external power supply, which must first be setup as
described in
The following test procedures are to be used for both USB and external power options.
Step 1.
Trigger the TMAG5123 device output: Slide either the north or south pole of the included
D3X8 magnet along the measurement channel of the TMAG5123 Hall-effect sensor.
Step 2.
Observe the output: If using the onboard hardware, observe the indicator light D1 illuminate
when the magnet gets close to the Hall-effect sensor. Alternatively, measurement can also be
made through a voltage drop using an external voltage measuring device, such as an
oscilloscope or digital multimeter (DMM).
