NXP New TFA9911 Smart Sensing Amplifier Turns Smartphone Speaker Into Microphone, Vibration Sensor with Superior Audio Performance

NXP Semiconductors recently introduced a new smart sensing amplifier, TFA9911, featuring a high efficiency class-D audio amplifier, sophisticated speaker boost and protection, and combining speaker sensing and processing algorithms to optimize recording and calling experiences. The device transforms speaker into a microphone and features vibration detection, which enables development of new “tap” activating use cases for smartphones.