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
74 of 76
© 2019 Dialog Semiconductor
8 Ordering Information
The ordering number consists of the part number followed by a suffix indicating the packing method.
For details and availability, please consult Dialog Semiconductor’s customer support portal or your
local sales representative.
Table 77: Ordering Information
Part Number
Package
Size (mm)
Shipment Form
Pack Quantity
DA7280-00V42
WLCSP
1.35 x 1.75
Tape and reel
4500
DA7280-00V4C
WLCSP
1.35 x 1.75
Tape and reel
250
DA7280-00FV2
QFN
3.0 x 3.0
Tape and reel
6000
DA7280-00FVC
QFN
3.0 x 3.0
Tape and reel
250
9 Application Information
The Dialog SmartCanvas GUI enables easy access to the device and can be used to accelerate
product development time. For further information, contact your Dialog Semiconductor
representative.
DA7280
GPI_0/PWM
GPI_1
GPI_2
VDDIO
VDDIO
GND_2
VDD
GND_1
VDD
SDA
SCL
LRA/
ERM
nIRQ
OUTN
OUTP
C1
100 nF
VDDIO
R3
5k6 Ω
VDDIO
R1
2k2 Ω
R2
2k2 Ω
Figure 41: External Components Diagram
Note: Drive the GPI pins from the same voltage level as the VDDIO pin.
Note: Ground any unused GPI pins.
Note: The C1 capacitor should be placed as close as possible to, and between, VDD and GND_1. It
removes high-frequency noise only; ensure additional decoupling (typ. 10 µF) is included elsewhere
in the system.