As consumer demand and expectations continue to increase, device manufacturers have begun to use more advanced and more efficient haptic systems to provide users with a richer physical feedback experience. Current implementations of haptic systems are limited to stand-alone microcontrollers or have Tactile Functions in Power Management ICs (PMICs). These solutions typically lack many of the features included in the DA7280, including high-definition waveform generation, resonant frequency tracking capability, and drive currents up to 500mA. These features can be used to ensure advanced, highly-efficient tactiles. Experience.
Since the haptic control driver is in standby/idle mode most of the time, the DA7280 is designed to extend battery life with very low no-load current consumption (360nA). Multiple general-purpose inputs enable low-delay triggering of tactile timing. Makes it ideal for Android systems that include a sensor hub and application processor.
With the DA7280, the application processor can directly trigger up to six haptic events from the sensor hub while maintaining deep sleep. Then, in active mode, the application processor can use I2C triggering or sequential transmission of complex timings. Dialog's unique The patented constant current output technology continuously monitors the BEMF (back-EMF) from the LRA (Linear Resonant Actuator), enabling the device to always sense the LRA resonant frequency, which is comparable to other solutions, capable of adapting to different temperatures, ages of equipment, mechanical Coupling and mechanical characteristics of LRA sensors differ to provide more timely and consistent output response.
The device combines up to 1kHz user-defined drive timing for HD haptic effects, and resonance frequency tracking for driving LRA and ERM motors. It provides excellent click/vibration effects that can be used not only in industrial touchscreens , VR systems and personal medical devices, etc., can also be applied to smart phones, car human-machine interfaces, games and wearable systems.
The DA7280 is available now and offers two package options: 12 solder balls, 1.5mm x 1.5mm x 0.6mm WLCSP and 12-pin QFN packages.