The DRV2667 device is a piezo haptic driver with integrated 105-V boost switch, integrated power diode, integrated fully-differential amplifier, and integrated digital front end capable of driving both high-voltage and low-voltage piezo haptic actuators. This versatile device supports HD haptics through the I 2C port or through the analog inputs.
The digital interface of the DRV2667 device is available through an I 2C-compatible bus. A digital interface relieves the costly processor burden of the PWM generation or additional analog channel requirements in the host system. Any writes to the internal FIFO will automatically wake up the device and begin playing the waveform after the 2-ms internal startup procedure. When the data flow stops or the FIFO under-runs, the device will automatically enter a pop-less shutdown procedure.
The DRV2667 device also includes waveform memory to store and recall waveforms with minimal latency as well as an advanced waveform synthesizer to construct complex haptic waveforms with minimal memory usage. This provide a means of hardware acceleration, relieving the host processor of haptic generation duties as well as minimizing bus traffic over the haptic interface.
The boost voltage is set using two external resistors, and the boost current limit is programmable through the R EXT resistor. A typical start-up time of 2 ms makes the DRV2667 an ideal piezo driver for fast haptic responses. Thermal overload protection prevents the device from being damaged when overdriven.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | DRV2667 Piezo Haptic Driver with Boost, Digital Front End, and Internal Waveform Memory datasheet (Rev. E) | PDF | HTML | 18 Oct 2022 |
| Application note | DRV8662, DRV2700, DRV2665, and DRV2667 Configuration Guide (Rev. A) | PDF | HTML | 08 Dec 2021 | |
| User guide | Haptic Control Console GUI (Rev. B) | 14 Oct 2021 | ||
| Application note | Haptic Energy Consumption (Rev. A) | PDF | HTML | 28 Sep 2021 | |
| Application note | Piezo Haptics With Integrated Waveforms: DRV2605L-Q1 and DRV2700 | 27 Sep 2017 | ||
| Technical article | Haptics: touch screens come alive in the new HMI design | PDF | HTML | 22 Sep 2015 | |
| Product overview | Haptic Solutions for Wearable Devices (Rev. A) | 30 Sep 2014 | ||
| Product overview | Automotive Haptics Solutions | 16 Sep 2013 | ||
| EVM User's guide | DRV2667 Evaluation Module | 28 Jun 2013 | ||
| Product overview | Haptics: Touch feedback that really moves you (Rev. A) | 08 Jan 2013 |
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