WM9001GEFL

w WM9001 1W Dual-Mode Class AB/D Speaker Driver DESCRIPTION FEATURES The WM9001 is a powerful, high quality speaker driver which can operate in class D or AB mode, providing total flexibility to the system designer. Low leakage, high PSRR and pop/click suppression enable direct battery connection to the speaker supply. RF noise suppression techniques and differential design are used to suppress undesired noise. A single-ended input option has been included for complete system flexibility. The device is enabled by setting a logic '1' on the EN pin. The class D clock can be generated by an internal oscillator, or supplied from an external clock source. • • • • • • • • • • • Flexible speaker boost options (requiring no additional components) allow output volume to be maximised for various SPKVDD/AVDD combinations while minimising internal power consumption. • • • The WM9001 is available in a 3x3mm QFN package, ideal for portable systems such as mobile phones, portable navigation devices, media players, laptop computers and electronic dictionaries. Class D and AB speaker driver modes for flexibility Speaker driver provides 1W into 8Ω at 80dB PSRR @ 217Hz (SPKVDD)