by Mat Dirjish
Cirrus Logic, supplier of analog, mixed-signal, and audio DSP semiconductors, unveils its latest family of closed-loop haptic drivers, the CS40L51, CS40L52, and CS40L53. Addressing the requirements of next-generation automotive in-cabin interfaces, these are the company’s first AEC-Q100 qualified haptic drivers.
The CS40L51/52/53 family offers a range of features for diverse use cases and budgets. They promise to simplify the design process for engineers by integrating key components into a single device.

The CS40L51 driver integrates sensor-less velocity control (SVC), real-time audio, haptics synchronization (A2H), and active vibration compensation (AVC) for immersive, high-fidelity feedback. Packing closed-loop control SVC, the CS40L52 optimizes system haptic performance in real-time by reducing response time, increasing frequency bandwidth, and compensating for manufacturing tolerances and temperature variations.
The CS40L53 features a click-compensation algorithm to enable consistent haptic feedback across systems by adjusting haptic effects based on the actuator’s manufacturing characteristics. And, leveraging the company’s expertise in signal processing and consumer electronics, the three drivers provide automotive designers with a scalable platform for both current and future generations of haptic-enabled automotive applications.
Engineering samples of CS40L51, CS40L52, and CS40L53 are available now with mass production expected to begin this month. For deeper details and data sheets, peruse the CS40L51/52/53 family overview.

