Sparkfun Haptic Driver - DA7280 (SMD)

The DA7280 is a versatile haptic driver designed for both linear resonant actuators (LRA) and eccentric rotating mass (ERM) devices, offering automatic closed-loop resonant frequency tracking. This ensures consistent performance across varying production tolerances, temperatures, and mechanical couplings. With its wideband operation, it fully exploits the capabilities of modern wideband and multi-directional LRAs. Its differential output drive architecture and continuous motion sensing enable efficient, calibration-free operation while minimizing software complexity. The DA7280 also features a low quiescent current state, significantly extending battery life in mobile systems.

Imagine enhancing your mobile device with a tactile feedback system that responds instantly and accurately to user inputs. The DA7280 is perfect for applications in smartphones, gaming controllers, and wearable technology, where precise haptic feedback can elevate the user experience. Its ability to preload haptic sequences into integrated Waveform Memory allows for rapid, independent triggering without host intervention, making it an excellent choice for real-time applications.

One of the standout benefits of the DA7280 is its efficiency. By automatically returning to a low-power state between playbacks, it conserves energy, making it ideal for battery-powered devices. The driver’s capability to handle multiple input triggers with low latency ensures that users receive immediate response feedback, enhancing interaction fluidity.

Unique to the DA7280 is its active monitoring of back electromotive force (BEMF) during operation. This feature allows for closed-loop Active Acceleration and Rapid Stopping, delivering sharper and more defined clicks. Unlike other solutions that pause to measure BEMF, the DA7280’s continuous drive capability maintains sequence integrity and maximizes click strength, providing a superior tactile experience.