DESCRIPTION

· The WM8350 is an integrated audio and power management subsystem designed for portable audio and multimedia systems.
· It includes a high-quality stereo CODEC, programmable amplifiers, and a low-noise bias voltage for electret microphones.
· The device features six DC-DC converters, four LDO regulators, and a current limit switch for system power management.
· It supports lithium battery, wall adaptor, or USB power sources and includes an on-chip battery charger.
· The WM8350 also includes a 32.768kHz crystal oscillator, an internal RC oscillator, and a real-time clock with an alarm function.

FEATURES

· Stereo Hi-Fi CODEC with DAC SNR 95dB and ADC SNR 95dB.
· On-chip headphone driver with 'capless' option and 16Ω headphone load support.
· Two differential microphone inputs with programmable preamps and a high-pass filter for ADC.
· System control with support for 2-wire or 3-/4-wire control interface and autonomous power source selection.
· Supply generation with multiple DC-DC converters and LDO voltage regulators.
· LED drivers with programmable constant-current sinks and open-drain outputs for RGB LEDs.
· Single-cell Li-Ion/Li-Pol battery charger with thermal protection and LED status indicators.
· Additional features include an "always on" RTC, watchdog timer, and up to 13 configurable GPIO pins.

APPLICATIONS

· Portable Audio and Media players.
· Portable Navigation Devices.
· Portable systems powered by single-cell lithium batteries.