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DA7282 - LRA/ERM Ultra-Low Power Haptic Driver

Description

DA7282 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.

Features

  • LRA or ERM drive capability.
  • No software requirements with embedded.
  • Automatic LRA resonant frequency tracking operation.
  • Wideband LRA support.
  • Differential PWM output drive.
  • I2C and PWM input streaming.
  • Current driven system to deliver constant actuator power.
  • Low latency (0.75 ms) I2C/GPI wake-up from low power consumption IDLE state,.
  • Automatic short circuit protection IQ = 0.68 µA.
  • Ultra-low power consumption, IQ = 5 nA, when.

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Full PDF Text Transcription

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DA7282 LRA/ERM Ultra-Low Power Haptic Driver with Multiple Input Triggers and Integrated Waveform Memory General Description DA7282 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. DA7282 offers wideband operation that fully utilizes the capabilities of newer wideband and multi-directional LRAs. The differential output drive architecture and continuous actuator motion sensing enable efficient, calibration-free playback and minimize software complexity.
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