General Description
DA7280-A is a linear resonant actuator (LRA) and eccentric rotating mass (ERM) haptic driver offering automatic closed-loop LRA resonant frequency tracking. The feature guarantees consistency across LRA production tolerances, operating temperature, aging, and mechanical coupling. DA7280- A offers wideband operation that fully utilizes the capabilities of newer wideband and multi-directional LRAs. It is qualified for automotive applications to the AEC Q-100 Grade 2 standard.

KEY FEATUREs
■ AEC Q-100 Grade 2 Qualified
■ LRA or ERM drive capability
■ Automatic LRA resonant frequency tracking
■ Wideband LRA support
■ I2C and PWM input streaming
■ Low latency (0.75 ms) I2C/GPI wake-up from
   low power consumption IDLE state, IQ = 0.36
   µA
■ Ultra-low latency (0.15 ms) wake-up from
   STANDBY state, IQ = 0.8 mA
■ Three GPI pins for triggering of up to six
   independent haptic sequences
■ On-board Waveform Memory with amplitude,
   time, and frequency control
■ Active Acceleration and Rapid Stop technology
   for high-fidelity haptic feedback
■ Actuator diagnostics and fault handling
■ No software requirements with embedded
   operation
■ Differential PWM output drive
■ Current driven system to deliver constant
   actuator power
■ Configurable EMI suppression
■ Automatic short circuit protection
■ Ultra-low power consumption, IQ = 0.36 µA,
   with state retention in IDLE state
■ Supply monitoring, reporting, and automatic
   output limiting
■ Open- and closed-loop modes
■ Custom wave drive support
■ Small solution QFN footprint requiring only one
   decoupling capacitor

APPLICATIONs
■ Automotive
■ Industrial