DRV2667 - 具有升压、数字前端和内部波形存储器的压电式触觉驱动器

DRV2667是TI德州仪器公司的一款压电式触觉驱动器产品，DRV2667是具有升压、数字前端和内部波形存储器的压电式触觉驱动器，本站介绍了DRV2667的封装应用图解、特点和优点、功能等，并给出了与DRV2667相关的TI元器件型号供参考。

DRV2667 - 具有升压、数字前端和内部波形存储器的压电式触觉驱动器 - 压电式触觉驱动器 - 触觉驱动器 - 德州仪器

产品特性

Integrated Digital Front End
- Up to 400-kHz I2C Bus Control
- Advanced Waveform Synthesizer
- 2-kB Internal Waveform Memory
- 100-Byte Internal FIFO Interface
- Immersion TS5000-Compliant
- Optional Analog Inputs
High-Voltage Piezo-Haptic Driver
- Drives up to 100 nF at 200 VPP and 300 Hz
- Drives up to 150 nF at 150 VPP and 300 Hz
- Drives up to 330 nF at 100 VPP and 300 Hz
- Drives up to 680 nF at 50 VPP and 300 Hz
- Differential Output
105-V Integrated Boost Converter
- Adjustable Boost Voltage
- Adjustable Boost Current Limit
- Integrated Power FET and Diode
- No Transformer Required
2-ms Fast Start Up Time
3- to 5.5-V Wide Supply Voltage Range
1.8 V-Compatible, VDD-Tolerant Digital Pins

产品应用

Mobile Phones and Tablets
Portable Computers
Keyboards and Mice
Electronic Gaming
Touch Enabled Devices

产品说明

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 I2C port or through the analog inputs.

The digital interface of the DRV2667 device is available through an I2C-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 REXT 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.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (MAX)
DRV2667	QFN (20)	4.00 mm × 4.00 mm

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