Dialog Semiconductor’s DA7280 haptic driver IC is capable of driving both eccentric rotating mass (ERM) and linear resonant actuators (LRA) motors, offering high definition wideband drive, 76% lower idle power consumption and a 50% reduction in external BOM count compared to existing devices on the market. Haptic systems today are limited by implementations done in standalone microcontrollers or haptic-enabled Power Management Integrated Circuits (PMICs).
As haptic drivers spend most of their time in standby/idle mode, the DA7280 was designed to utilize very low idle current consumption (360nA) to maximize battery life. Multiple general-purpose inputs allow low latency triggering of haptic sequences, making it an ideal solution for Android systems incorporating a sensor hub and application processor.
With the DA7280, the application processor can remain in deep sleep while the sensor hub triggers up to six haptic events directly. Then, in active mode, the application processor can trigger or stream complex sequences using I2C. The device combines custom drive sequences at up to 1kHz for HD haptic effects, along with resonant frequency tracking for driving both LRA and ERM motors. This yields superior click/vibration effects in smartphone, automotive human interface systems, gaming and wearable applications, in addition to similar applications in the industrial space such as touchscreens, VR systems and personal medical devices.
The DA7280 is available now in both a 12-ball, 1.5 mm x 1.5 mm x 0.6 mm WLCSP package and a 12-pin QFN package. For more information, peruse the DA7280 datasheet.