Cirrus Logic Launches Advanced Haptic and Sensing ICs for Richer, Immersive User Experiences

June 3, 2020 Rich Nass

In the never-ending pursuit of making consumer devices easier to use, while making them easier and more cost-effective to manufacture, Cirrus Logic is expanding its haptics and sensing portfolio. Aimed at automotive, augmented and virtual reality, gaming, personal computers, and wearables, the company claims to offer end users an immersive touch experience. The result is of the more sophisticated haptic feedback technology is sleeker, more robust end products with fewer mechanical controls for new responsive and immersive user experiences.

The CS40L25 family of boosted haptic drivers lets OEMs create customized user experiences beyond the single-action response associated with today’s mechanical buttons. This gets more difficult to do as consumer devices continue to become slimmer with larger displays. The new drivers feature low-latency, boost voltage, and closed-loop control algorithms that enable customized waveforms to trigger fast, unique haptic feedback responses.

With the new haptic solutions, developers can create context-aware virtual buttons for almost any surface. Eliminating mechanical buttons results in cleaner, sleeker industrial designs.

The CS40L25 family includes a high-performance haptic driver, a DSP, and a boost converter. The devices are resonance-aware, drive high-performance linear resonant actuators (LRAs) and voice coil motors (VCMs), and enhance user experiences by supporting unique/pre-stored haptic waveforms. Ultra-low latency provides real-time control of the haptic motor. Closed-loop algorithms maximize LRA effectiveness and enable strong and consistent haptics with a crisper, less “buzzy” effect.

The family of haptic products includes:

• CS40L25-CWZR and CS40L25B-CWZR ICs in 30-ball WLCSP packages for mobile and portable applications

• CS40L25B-CNZR commercial-grade 32-pin QFN product for PC/laptop and other general market applications

• CS40L25B-DNZ AEC-Q100 automotive-qualified variant in a 32-pin QFN package with wettable flanks for infotainment applications such as touch buttons and touch screens

The CWZR ICs are now shipping in volume. The remainder are currently sampling.

About the Author

Rich Nass

Richard Nass is the Executive Vice-President of OpenSystems Media. His key responsibilities include setting the direction for all aspects of OpenSystems Media’s Embedded and IoT product portfolios, including web sites, e-newsletters, print and digital magazines, and various other digital and print activities. He was instrumental in developing the company's on-line educational portal, Embedded University. Previously, Nass was the Brand Director for UBM’s award-winning Design News property. Prior to that, he led the content team for UBM Canon’s Medical Devices Group, as well all custom properties and events in the U.S., Europe, and Asia. Nass has been in the engineering OEM industry for more than 25 years. In prior stints, he led the Content Team at EE Times, handling the Embedded and Custom groups and the TechOnline DesignLine network of design engineering web sites. Nass holds a BSEE degree from the New Jersey Institute of Technology.

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