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


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

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