Datasheet
Table Of Contents
- General Description
- Key Features
- Applications
- System Diagrams
- Contents
- Figures
- Tables
- Legal
- Product Family
- 1 Terms and Definitions
- 2 Block Diagram
- 3 Pinout
- 4 Characteristics
- 5 Functional Description
- 5.1 Features Description
- Driving LRA and ERM Actuators
- Automatic LRA Resonant Frequency Tracking
- Wideband LRA Support
- I2C and PWM Input Streaming
- Low Latency I2C/GPI Wake-Up from IDLE State
- Three GPI Sequence Triggers for up to Six Independent Haptic Responses
- On-Board Waveform Memory with Amplitude, Time, and Frequency Control
- Active Acceleration and Rapid Stop for High-Fidelity Haptic Feedback
- Continuous Actuator Diagnostics and Fault Handling
- No Software Requirements with Embedded Operation
- Differential Output Drive
- Current Driven System
- Configurable EMI Suppression
- Automatic Short Circuit Protection
- Ultra-Low Power Consumption with State Retention
- Ultra-Low Latency in STANDBY State
- Supply Monitoring, Reporting, and Automatic Output Limiting
- Open- and Closed-Loop Modes
- Open-Loop Sine/Custom Wave Drive Support
- Small Solution Footprint
- Additional Features
- 5.2 Functional Modes
- 5.3 Resonant Frequency Tracking
- 5.4 Active Acceleration and Rapid Stop
- 5.5 Wideband Frequency Control
- 5.6 Device Configuration and Playback
- 5.7 Advanced Operation
- 5.7.1 Frequency Tracking
- 5.7.2 Rapid Stop
- 5.7.3 Initial Impedance Update
- 5.7.4 Amplitude PID
- 5.7.5 Wideband Operation
- 5.7.6 Custom Waveform Operation
- 5.7.7 Embedded Operation
- 5.7.8 Polarity Change Reporting for Half-Period Control in DRO Mode
- 5.7.9 Loop Filter Configuration
- 5.7.10 UVLO Threshold
- 5.7.11 Edge Rate Control
- 5.7.12 Double Output Current Range
- 5.7.13 Supply Monitoring, Reporting, and Automatic Output Limiting
- 5.7.14 BEMF Fault Limit
- 5.7.15 Increasing Impedance Detection Accuracy
- 5.7.16 Frequency Pause during Rapid Stop
- 5.7.17 Frequency Pause during Rapid Stop
- 5.7.18 Coin ERM Operation
- 5.8 Waveform Memory
- 5.9 General Data Format
- 5.10 I2C Control Interface
- 5.1 Features Description
- 6 Register Overview
- 7 Package Information
- 8 Ordering Information
- 9 Application Information
- 10 Layout Guidelines
DA7280
LRA/ERM Haptic Driver with Multiple Input Triggers,
Integrated Waveform Memory and Wideband Support
Datasheet
Revision 3.0
30-Jul-2019
CFR0011-120-00
3 of 76
© 2019 Dialog Semiconductor
Contents
General Description ............................................................................................................................ 1
Key Features ........................................................................................................................................ 1
Applications ......................................................................................................................................... 1
System Diagrams ................................................................................................................................ 2
Figures .................................................................................................................................................. 4
Tables ................................................................................................................................................... 4
Legal ..................................................................................................................................................... 6
Product Family ..................................................................................................................................... 6
1 Terms and Definitions ................................................................................................................... 7
2 Block Diagram ............................................................................................................................... 8
3 Pinout ............................................................................................................................................. 9
4 Characteristics ............................................................................................................................ 10
4.1 Absolute Maximum Ratings ................................................................................................ 10
4.2 Recommended Operating Conditions ................................................................................. 10
4.3 Electrical Characteristics ..................................................................................................... 11
4.4 Timing Characteristics ......................................................................................................... 12
4.5 Thermal Characteristics ...................................................................................................... 13
5 Functional Description ............................................................................................................... 14
5.1 Features Description ........................................................................................................... 14
5.2 Functional Modes ................................................................................................................ 19
5.3 Resonant Frequency Tracking ............................................................................................ 23
5.4 Active Acceleration and Rapid Stop .................................................................................... 23
5.5 Wideband Frequency Control ............................................................................................. 25
5.6 Device Configuration and Playback .................................................................................... 25
5.7 Advanced Operation ........................................................................................................... 34
5.8 Waveform Memory .............................................................................................................. 42
5.9 General Data Format .......................................................................................................... 48
5.10 I
2
C Control Interface ............................................................................................................ 51
6 Register Overview ....................................................................................................................... 54
6.1 Register Map ....................................................................................................................... 54
6.2 Register Descriptions .......................................................................................................... 56
7 Package Information ................................................................................................................... 71
7.1 WLCSP Package Outline .................................................................................................... 71
7.2 QFN Package Outline ......................................................................................................... 72
7.3 Moisture Sensitivity Level.................................................................................................... 73
7.4 WLCSP Handling ................................................................................................................ 73
7.5 Soldering Information .......................................................................................................... 73
8 Ordering Information .................................................................................................................. 74
9 Application Information .............................................................................................................. 74
10 Layout Guidelines ....................................................................................................................... 75