特性
•1MHz I2C Bus
•12-KByte Memory
•12k/24k/48k input wave sampling rate
•F0 detect and tracking
•Advance autobrake engine integrated
•Playback mode:
➢Real time playback(Up to 4KByte FIFO)
➢Memory playback
➢I2S playback
➢3 Trigger playback
➢One wire playback
➢Cont playback
•Resistance-Based LRA Diagnostics
•Drive signal monitor for LRA protect
•Drive Compensation Over Battery Discharge
•Fast Start Up Time ＜1ms
•Dedicated interrupt output pin
•Boost output voltage up to 11V
•VOUT=8.5V@Vbat=4.2V for 8Ω LRA
•Support automatically switch to standby mode
•Standby current：8uA@Vbat=3.6V
•Shutdown current：0.1uA
•Supply voltage range 3 to 5.5V
•Short-Circuit Protection, Over-Temperature Protection, Under-Voltage Protection
•FCQFN 2mm × 3mm × 0.55mm -20L Package
•AW86917A included Immersion IP license
•AW86917B included Immersion IP and dedicated software license
说明
AW86917A/B is a high voltage H-bridge, single chip LRA haptic driver, with F0 detecting and tracking based on BEMF, with a boost converter up to 11V drive voltage inside, supporting real time playback, memory playback, cont playback, I2S playback, one wire and hardware pin trigged playback. A typical startup time of 1ms makes the AW86917A/B an ideal haptic driver for fast responses.
AW86917A/B integrates a 12KByte SRAM for user-defined waveforms to achieve a variety of vibration experiences, supporting 3 sampling rate(12k/24k/48k) of waveforms loaded in SRAM, supporting output waveform sampling rate up-sampling to 48k.
AW86917A/B integrates an autobrake engine to suppress the aftershocks to zero for different drive waveforms(short in long) on different LRA motor.
AW86917A/B supports LRA fault diagnostic based on resistance measurement and protections of short-circuit, over-temperature and under-voltage.
AW86917A/B integrates a high-efficiency boost converter as the H-Bridge driver supply rail. The output voltage, maximum current limit and maximum boost current are configurable.
AW86917A/B features configurable automatically switch to standby mode. This can less quiescent power consumption. Dedicated interrupt output pin can detect real time FIFO status and the error status of the chip.
AW86917A/B features general settings are communicated via an I2C-bus interface and its I2C address is configurable.
AW86917A/B is available in a FCQFN 2mm x 3mm x 0.55mm -20L package.
