DESCRIPTION

· The WM9001 is a high-quality, dual-mode Class AB/D speaker driver offering flexibility for system designers.

· It supports low leakage, high PSRR, and pop/click suppression, enabling direct battery connection.

· Features RF noise suppression and differential design to minimize unwanted noise.

· Includes a single-ended input option for enhanced system flexibility.

· Enabled by setting a logic '1' on the EN pin.

· Class D clock can be internally generated or externally sourced.

· Offers flexible speaker boost options to maximize output volume and minimize power consumption.

· Available in a compact 3x3mm QFN package, suitable for portable devices.

FEATURES

· Supports both Class D and AB modes for versatile applications.

· Delivers 1W into 8 Ω with <0.1% THD.

· SNR of 102dB (Class AB) and 97dB (Class D).

· Differential and single-ended input modes.

· >80dB PSRR @ 217Hz (SPKVDD).

· <1 μA typical leakage with direct battery connection.

· Filterless speaker connection.

· Fully differential architecture in differential mode.

· Pop/click and RF noise suppression.

· Compatible with Wolfson CODECs like WM8990/WM8991.

· Internal oscillator or external clock source.

· Thermal shutdown protection.

· Compact 3x3mm QFN package.

APPLICATIONS

· Mobile phones.

· Portable navigation devices.

· Portable media players.

· Laptop computers and portable gaming devices.

· Electronic dictionaries.

· General-purpose high-quality speaker amplification.