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Haptic Driver for ERM/LRA with Waveform Memory and Smart Loop Architecture


Package | PIN: YZF | 9
Temp: I (-40 to 85)
Carrier: Cut Tape
Qty Price
1-9 $2.20
10-24 $1.98
25-99 $1.84
100-249 $1.61
250-499 $1.51
500-749 $1.29
750-999 $1.08
1000+ $1.04


  • Flexible Haptic/Vibra Driver
    • LRA (Linear Resonance Actuator)
    • ERM (EccentricRotating Mass)
  • I2C Controlled Digital Playback Engine
    • Internal RAM for Waveform Storage
    • Real-TimePlayback Mode through I2C
  • Smart-Loop Architecture(1)
    • Automatic Overdrive/Braking(ERM/LRA)
    • Automatic Resonance Tracking(LRA)
    • Automatic Actuator Diagnostic(ERM/LRA)
    • Automatic Level Calibration(ERM/LRA)
  • Immersion TouchSense® 3000 Compatible
  • Optional PWM Input with 0% to 100% Duty Cycle Control Range
  • Optional Analog Input Control
  • Optional Hardware Trigger Pin
  • Efficient Output Drive
  • Fast Startup Time
  • Constant Acceleration Over Supply Voltage
  • 1.8-V Compatible, VDD-Tolerant Digital Pins (1)

(1)Patent pending control algorithm

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Texas Instruments  DRV2604YZFT

The DRV2604 device is designed to provide extremely flexible hapticcontrol of ERM andLRA actuators over a shared I2C compatible bus. This control relievesthe host processor from ever generating pulse-width modulated (PWM) drive signals, saving bothcostly timer interrupts and hardware pins.

The DRV2604 device includes enough integrated RAM to allow the userto pre-load over 100 customized waveforms. These waveforms can be instantly played back throughI2C or optionally triggered through a hardware trigger pin.Additionally, the real-time playback mode allows the host processor to bypass the library playbackengine and play waveforms directly from the host through I2C.

The DRV2604 device also contains a smart-loop architecture, whichallows effortless auto resonant drive for LRA as well asfeedback-optimized ERM drive. This feedback gives automatic overdrive and braking, whichcreates a simplified input waveform paradigm as well as reliable motor control and consistent motorperformance.

The DRV2604 device features a trinary-modulated output stage,providing greater efficiency than linear-based output drivers. The 9-ball WCSP footprint, flexibleoperation, and low component count make the DRV2604 device the ideal choicefor portable and touch-enabled vibratory and haptic applications.