DRV2603ERM Datasheet, PDF (6/28 Pages) Texas Instruments – DRV2603 ERM/LRA Haptic Driver Evaluation Kit

DRV2603 Demonstration Program
www.ti.com
Figure 2 and Figure 3 compare the acceleration (in blue) between a driver without auto-resonance
detection and a driver with auto-resonance detection.
Figure 2. LRA Auto-Resonance Off
Figure 3. LRA Auto-Resonance On
2.2.3 Mode 2 – LRA Clicks
Mode 2 showcases LRA clicks and double clicks. Notice the difference in length of the click with braking
and without braking. Then compare the double clicks and notice the event separation is only possible with
braking.
Figure 4 and Figure 5 show the difference between a click with braking and a click without braking. Notice
the acceleration (in blue) is much longer when braking is not applied.
Figure 4. LRA Click without Braking
Figure 5. LRA Click with Braking
2.2.4 Mode 3 – User Interface Effects
Mode 3 showcases LRA user interface effects.
1. Button 1 – Basic click effect
2. Button 2 – Click and Release effect – when holding the board press this button. The button will click
when pressed down and bump when released giving a full button effect.
3. Button 3 – Double tick effect – the double tick effect can be used for a backspace key or some other
special function key.
4. Button 4 – Scroll wheel effect – press this button while holding the board and feel the scroll-like effect
imitating a flick or scroll gesture.
6
DRV2603 ERM/LRA Haptic Driver Evaluation Kit
SLOU340A – May 2012 – Revised May 2012
Copyright © 2012, Texas Instruments Incorporated
Submit Documentation Feedback