Features
- 5nA standby current consumption
- Wideband LRA driver: 25Hz to 1kHz with resonant mode
- Frequency tracking support up to 300Hz
- Low-latency direct drive for haptics
- On-the-fly diagnostics
- Custom waveform sequences
- Three methods of drive with Linux and C-like driver (HAL)
- Packages
- WLCSP-12 (0.4mm pitch)
- QFN-12 (0.65mm pitch)
Description
The DA7282 ultra-low power haptic driver, combines custom drive sequences, on- and off-resonance, at up to 1kHz. The DA7282 drives both ERM and LRA (narrow and wideband) actuators and track resonance up to 300Hz producing highly complex click/vibration touch effects in a wide range of applications.
The DA7282 differs from the DA7280 and DA7281 by providing the capability to go into a full standby mode, lowering current consumption to 5nA.
Benefits
- 20x lower standby current, minimizing the drain on small battery systems
- Constant resonance frequency tracking through continuous current drive monitoring
- Ultra-low power consumption meaning longer battery life
- Only 0.75ms latency when responding from ultra-low power state
- Drives LRAs off-resonance for custom effects, or dual-resonant systems for two-dimensional vibration
- Enables wideband effects as well as supporting dual-resonant systems
- Drives distinct haptic effects triggered by multiple inputs without need to wake the host processor
- Detects issues with motor automatically
- Frequency, time, amplitude triplets to program the waveform
- Quick and easy software development using the SmartCanvas™ GUI
Parameters
| Attributes | Value |
|---|---|
| Target applications | Smartphone, Gaming, Wearables, Portable computing systems, Computing – all-in-ones (display), Notebook PC |
Application Block Diagrams
 | Active Stylus A tablet active stylus with pressure sensitivity, motion detection, and wireless charging. |
Additional Applications
- Smartphone
- Gaming
- Wearables
- Portable computing systems (POS, barcode scanners, etc.)
- Computing – All-in-ones (display), notebook PC
- Any display driven consumer product
- Automotive
- Industrial
- Medical
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Support Communities
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DA7282 waveform memory examples
I got the HAL code for the driver, but are there any examples of what to fill the waveform memory with to get certain effects? That would be super helpful rather than reinventing that wheel.
Apr 8, 2022
Support Communities
