Hardware
4
SLYU045A – December 2017 – Revised November 2019
Copyright © 2017–2019, Texas Instruments Incorporated
DRV5011-5012EVM
2
Hardware
The DRV5011 and DRV5012 are digital-latch Hall effect sensors that provides ease of use with low power
consumption and small size. The DRV5011 operates at 30 kHz, whereas the DRV5012 has an additional
SEL pin that selects either a 2.5-kHz or 20-Hz sampling speed to conserve power. The fixture layout is not
intended to be a model for the target circuit, nor is it laid out for electromagnetic compatibility (EMC)
testing. The DRV5011-5012EVM consists of one PCB with an option to cut out seven individual PCBs:
three coupon boards with the DRV5011 soldered down, three coupon boards with the DRV5012 soldered
down, and a final board that accepts a micro-USB cable to power a DRV5011 and an LED for easy
demonstration and evaluation.
2.1
Features
The layout of the DRV5011-5012EVM printed-circuit board (PCB) is designed to provide the following
features:
•
Easy demonstration and evaluation of the DRV5011
•
Ease of access to DRV5011 and DRV5012 device pins with test point vias
•
Capability to remove small coupon boards and wire them directly into space constrained applications
for prototype evaluation
See the
and
data sheets for comprehensive information about the DRV5011 and
DRV5012 devices, respectively.
3
Quick Start Setup and Use
The following are instructions to set up and use the DRV5011-5012EVM.
Step 1.
Connect the included USB cable to a powered, 5V USB source (like a computer or wall
charger).
Step 2.
Hold the included magnet near the DRV5011 device on the central board. Alternate the
polarity of the magnet by turning it around 180°.
Step 3.
Observe the LED turn on and off as the polarity of the magnet reverses.
3.1
Measurements
With the DRV5011-5012EVM, the user can either quickly test the functionality of a DRV5011 circuit with a
5-V USB power supply, or remove and install up to three DRV5011 and DRV5012 devices on coupon
boards into a prototype system.
The following procedures are used to connect the coupon boards for evaluation.
•
DRV5011
:
Step 1.
Connect a supply of 2.5-V to 5.5-V to pin 1 of the coupon board labeled DRV5011, and
connect the ground reference of that supply to pin 2.
Step 2.
Monitor the output of the DRV5011 by connecting a multimeter to pin 4 of the coupon board.
•
DRV5012
:
Step 1.
Connect a supply of 1.65-V to 5.5-V to pin 1 of the coupon board labeled DRV5012, and
connect the ground reference of that supply to pin 2.
Step 2.
Connect either supply or ground to pin 4 of the coupon board labeled DRV5012. This
connection selects the speed of conversion.
Step 3.
Monitor the output of the DRV5012 by connecting a multimeter to pin 3 of the coupon board.
