Texas Instruments' (TI) solutions for touch enabled applications include ultra-low power MSP430 microcontrollers, capacitive and resistive touch screen controllers as well as inertial and piezo haptic actuator drivers.
Haptic technology has the ability to provide tactile feedback through touch-based interfaces. This touch-based technology has existed for decades and has become extremely popular in handheld, portable and touch-screen enabled consumer and industrial electronic devices. The vibrations produced by these devices provide a new, deeply enhanced user experience and unparalleled value.
New! DRV2667 industry's most highly integrated piezo haptic driver
TI's DRV2667 is a highly integrated piezo haptic driver featuring advanced digital interface, configurable boost converter and high voltage amplifier. Unlike competing devices, the DRV2667 does not require a large, expensive transformer, making it the industry's smallest complete single-chip solution for piezo haptic waveform generation.
DRV2667 Key Features and Benefits
High-voltage differential amplifier generates up to 200Vpp output allowing support of a wide range of piezo actuators
15V to 105V boost converter eliminates the need for external components and a transformer
Digital interface, integrated memory and 2-ms startup allow faster response time and a more realistic experience
Complete single-chip solution for high-voltage piezo haptics saves board space and cost
Piezo haptics enables the highest fidelity “HD” haptic experience for a wide range of products such as smartphones, tablets, white goods and automotive applications
DRV2665 piezo haptics driver offers the industry-leading analog and digital integration as the DRV2667, minus the integrated 2kB RAM for waveform storage.
DRV8662 piezo haptics driver provides TI’s integrated high voltage boost and piezo driver without digital interface.
The DRV2605 haptics driver makes it easy to add realistic tactile feedback effects to a number of consumer and industrial products including smartphones, tablets, ebooks, refrigerators, microwave ovens and washing machines.
DRV2605 Key Features and Benefits
Industry’s first ERM/LRA haptics driver with 123 pre-loaded, royalty-free distinct haptic effects designed and licensed by Immersion
Audio-to-haptics mode automatically converts audio from music, movies or games into haptic effects allowing users to feel and fully experience audio and video content
Smart Loop architecture
Automatic overdriving and braking simplifies software programming and reduces startup and braking time by 50%
Automatic resonance tracking for the LRA delivers 2x the vibration force at half the power of competitive solutions
Automatic actuator diagnostics and level tracking delivers consistent acceleration over a range of environmental conditions
Industry’s smallest form factor (1.5 mm2)
DRV2604 ERM/LRA haptics driver offers all the same core and industry-leading performance and power consumption as DRV2605, minus the audio-to-haptics mode and license to Immersion’s haptic effect library, and features an integrated waveform RAM to store the your custom waveform library.
Solutions for Automotive Applications (slyt539.pdf, 562 KB)
TI offers a comprehensive set of drivers that are compatible with various haptic actuator technologies including, eccentric rotating mass (ERMs), the increasingly popular linear resonant actuators (LRAs), and cutting edge piezo actuators. TI provides a full spectrum of discrete solutions as well as integrated system solutions for various touch screen controller applications.
Convert audio signals to haptic effects; automatic haptics for music, games,and movies
Smart Loop Architecture
Automatically track the resonant frequency of an LRA; maximize vibration strength and improve consistency across devices
Automatically detect the status of the actuator
Automatically detect and configure the closed-loop feedback coefficients for every actuator
Closed Loop Feedback
Improve the response time of ERM and LRA actuators with automatic overdirve and braking
ERM Closed Loop Buzz
ERM - Eccentric Rotating Mass
ERM is one of two inertial motor-based haptic actuators, and is the most widely used in the industry today. This actuator has an off center weight that rotates; creating omni-directional waves that propagate throughout the device, enabling whole device haptics.
Linear Resonant Actuators are increasing in popularity. LRAs are comprised of a simple magnet attached to a spring that modulates up and down creating its vibrations. Due to composition the LRA can offer a richer user experience in a lower power solution compared to ERMs.
Piezo are the cutting edge new technology in regards to haptics applications. These device bend when a voltage is applied and it is that bending that creates the foundation of vibration. Piezo does not have any bandwidth issues associated with LRA or ERMs and offers the widest use of spectrum available giving you a virtually blank canvas of waveforms to work with.