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DRV2667 Datasheet(PDF) 1 Page - Texas Instruments |
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DRV2667 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 6 page C VBST VDD VREG SDA SCL IN+ IN- VPUMP GND SW VBST PVDD FB OUT+ OUT- REXT L1 I2C Analog Input R 1 R 2 Piezo Actuator 3 V to 5.5 V C VDD R PU R PU C VREG C PUMP R EXT DRV2667 DRV2667 www.ti.com SLOS807 – JANUARY 2013 Piezo Haptic Driver with Boost, Digital Front End, and Internal Waveform Memory Check for Samples: DRV2667 1 FEATURES DESCRIPTION The DRV2667 is a piezo haptic driver with integrated • Integrated Digital Front End 105 V boost switch, integrated power diode, – I2C Bus Control up to 400 kHz integrated fully-differential amplifier, and integrated – Advanced Waveform Synthesizer digital front end. This versatile device is capable of driving both high-voltage and low-voltage piezo haptic – 2 kB Internal Waveform Memory actuators. The input signal can be driven over the I2C – Internal 100 Byte FIFO Interface port or the analog inputs. – Immersion TS5000 Compliant The DRV2667 digital interface is available via an I2C – Optional Analog Inputs compatible bus. A digital interface relieves the costly • High Voltage Piezo-Haptic Driver processor burden of PWM generation or additional analog channel requirements in the host system. Any – Drives up to 100 nF at 200 VPP and 300 Hz writes to the internal FIFO will automatically wake up – Drives up to 150 nF at 150 VPP and 300 Hz the device and begin playing the waveform after the 2 – Drives up to 330 nF at 100 VPP and 300 Hz ms internal startup procedure. When the data flow stops or the FIFO under-runs, the DRV2667 will – Drives up to 680 nF at 50 VPP and 300 Hz automatically enter a pop-less shutdown procedure. – Differential Output The DRV2667 also includes deep volatile waveform • Integrated 105 V Boost Converter memory to store and recall waveforms with minimal – Adjustable Boost Voltage latency as well as an advanced waveform synthesizer – Adjustable Boost Current Limit to construct complex haptic waveforms with minimal memory usage. This provide a means of hardware – Integrated Power FET and Diode acceleration, relieving the host processor of haptic – No Transformer Required generation duties as well as minimizing bus traffic • Fast Start Up Time of 2 ms (typical) over the haptic interface. • Wide Supply Voltage Range of 3 V to 5.5 V The boost voltage is set using two external resistors, • 1.8 V Compatible, VDD Tolerant Digital Pins and the boost current limit is programmable via the REXT resistor. A typical start-up time of 2 ms makes • Available in a 4 mm × 4 mm × 0.9 mm QFN the DRV2667 an ideal piezo driver for fast haptic package (RGP) responses. Thermal overload protection prevents the • Pin-Similar with DRV8662 and Pin-Compatible device from being damaged when overdriven. with DRV2665 __ APPLICATIONS • Mobile Phones • Tablets • Portable Computers • Keyboards and Mice • Electronic Gaming • Touch Enabled Devices 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Copyright © 2013, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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