Advanced haptic and sensing solutions

Advanced haptic and sensing solutions

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Cirrus Logic‘s new haptic solutions are designed to assist in the creation of context-aware “virtual” buttons for almost any surface.
By Ally Winning

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The elimination of mechanical buttons allows the creation of cleaner industrial design aesthetics without button “bumps.”

Virtual buttons are becoming more popular in a number of applications, such as smartphones. The replacement of peripheral button functions can also be found in automobiles, PCs, wearables and game controllers by incorporating non-mechanical haptic feedback.

CS40L25 product features and availability

Cirrus’ CS40L25 products provide a high-performance haptic driver, a digital signal processor and a boost converter in a single package. The devices are resonance-aware, drive high-performance linear resonant actuators (LRAs) and voice coil motors (VCMs), and support unique/pre-stored haptic waveforms. The devices have an ultra-low latency for real-time control of the haptic motor to provide a more immediate sensation or response. Closed-loop algorithms maximize LRA effectiveness and provide strong and consistent haptics.

The CS40L25 family of products includes:

  • CS40L25-CWZR and CS40L25B-CWZR ICs come in 30-ball WLCSP packages and are intended for mobile and portable applications. These devices are now shipping in volume

  • CS40L25B-CNZR is a commercial-grade 32-pin QFN product for PCs, laptops and other general market applications. These products are currently sampling

  • CS40L25B-DNZ is an AEC-Q100 automotive-qualified variant that is available in a 32-pin QFN package with wettable flanks for infotainment applications such as touch buttons and touch screens, currently sampling

There is currently a strong interest for differentiated tactile feedback features in a number of applications introduced in 2020 that will include Cirrus Logic haptic drivers. Cirrus Logic has also recently begun sampling next-generation haptic product that integrates force sensing and haptic drivers. The single-chip device will improve performance, reduce power consumption and simplify system design, as well as providing up to a 50% reduction in the footprint of a smartphone haptic subsystem.

More information

https://www.cirrus.com/products/CS40L25

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