SLOS825E December 2012 – April 2018 DRV2605
When the DRV2605 device is in analog-input interface mode, the device accepts an analog voltage at the IN/TRIG pin. The DRV2605 device drives the actuator continuously in analog-input interface mode until the user sets the device to standby mode or to enter another interface mode. The reference voltage in standby mode is 1.8 V. Therefore, the 1.8-V reference voltage is interpreted as a 100% input value. A reference voltage of 0.9 V is interpreted as a 50% input value and a reference voltage of 0 V is interpreted as a 0% input value. The input value in standby mode is analogous to the duty-cycle percentage in PWM mode.
For the LRA, the DRV2605 automatically tracks the resonance frequency.