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
2 of 76
© 2019 Dialog Semiconductor
System Diagrams
GPI and I
2
C
PWM Only
I
2
C Only
Embedded Operation
DA7280
OUTN
OUTP
SCL
SDA
GPI_0/PWM
GPI_1
GPI_2
LRA/
ERM
VDDVDDIO
VDDIO
VBAT
DA7280
OUTN
OUTP
SCL
SDA
GPI_0/PWM
GPI_1
GPI_2
LRA/
ERM
VDDVDDIO
VDDIO
VBAT
DA7280
OUTN
OUTP
SCL
SDA
GPI_0/PWM
GPI_1
GPI_2
LRA/
ERM
Host
VDDVDDIO
VDDIO
VBAT
DA7280
OUTN
OUTP
SCL
SDA
GPI_0/PWM
GPI_1
GPI_2
LRA/
ERM
Host
VDDVDDIO
VDDIO
VBAT
DA7280
OUTN
OUTP
SCL
SDA
GPI_0/PWM
GPI_1
GPI_2
LRA/
ERM
Sensor
Hub
or
Button
Press
Detect
VDDVDDIO
VDDIO
VBAT
DA7280
OUTN
OUTP
SCL
SDA
GPI_0/PWM
GPI_1
GPI_2
LRA/
ERM
Host
VDDVDDIO
VDDIO
VBAT
GND
GND
GND
GNDGND
GND
nIRQ
nIRQnIRQ
nIRQ
nIRQ
nIRQ
Embedded Operation
No Host
External Boost
up to 5.5V
VBST
External Boost
Operation
Host
Host
Host
(startup
only)
Figure 1: System Diagrams