DA7280

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Low-power, wide-bandwidth Haptic Driver

The DA7280 High-Definition (HD) Haptic Driver combines custom drive sequences, on- and off-resonance, at up to 1kHz. The DA7280 can drive both ERM and LRA (narrow and wideband) actuators and track resonance up to 300Hz to drive the most complex click/vibration touch effects in a wide range of applications.

The DA7280 combines very low idle current consumption (360nA) with low-latency trigger inputs to minimize the delay after button presses when an application process is in deep sleep.

Features

360nA idle power mode with full I²C control and memory retention
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)

Benefits

Constant resonance frequency tracking through continuous current drive monitoring
Ultra-low power consumption means 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 wide-band effects as well as supporting dual-resonant systems
Drives distinct haptic effects triggered by multiple inputs without need to wake the apps processor
Detects issues with motor automatically
Frequency, time, amplitude triplets to program the waveform
Quick and easy software development using Dialog’s SmartCavas™ GUI

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

Package

12-pin WLCSP Package (0.4mm pitch)

12-pin QFN Package (0.65mm pitch)

Resources

Product Briefs and Summaries
	Date	Version
DA7280 Product Brief	14/09/2018	1.0

Datasheets
	Date	Version
DA7280 Automotive Grade Datasheet	27/10/2020	1.3
DA7280 Datasheet	30/07/2019	3.0

Schematics
	Date	Version
DA7280 EVB Build BOM	14/09/2018	1.0
DA7280 EVB PCB Layout	14/09/2018	1.0
DA7280 EVB Schematic	14/12/2017	1.0

Software Resources
	Date	Version
DA7280 GUI (Registered users only)	10/09/2018	0.0.20

User guides and manuals
	Date	Version
DA7280 Performance Board User Manual	03/10/2018	1.3
Generating an LRA Configuration Script for DA7280 User Manual	24/10/2018	1.1

Videos
	Date	Version
DA7280 Eval board to buzz in 5 minutes,(Video Tutorial)	08/03/2018	1v0

Diagrams

DA7280 System Diagram

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DA7280 Block Diagram

Evaluation support

The Dialog SmartCanvas™ GUI in conjunction with the DA7280 performance evaluation board enables quick and easy evaluation of the DA7280 along with the chosen LRA or ERM. With the attached 100g mass and an analog accelerometer the board is used to evaluate, design, and fine-tune your haptic sequences.