器件名称: WM8985_07
功能描述: Multimedia CODEC With Class D Headphone and Line Out
文件大小: 1386.63KB 共118页
简 介:w
DESCRIPTION
The WM8985 is a low power, high quality, feature-rich stereo codec designed for portable multimedia applications that require low power consumption and high quality audio. The device integrates preamps for stereo differential mics, and includes class D and class AB drivers for headphone and differential or stereo line output. External component requirements are reduced as no separate microphone or headphone amplifiers are required. Advanced DSP features include a 5-band equaliser, an ALC/limiter for the microphone or line input through the ADC and a digital playback limiter. Additional digital filtering options are available in the ADC path, to cater for application filtering such as ‘wind noise reduction’ and a programmable notch filter. Highly flexible mixers enable many new application features, with the option to record and playback any combination of voice, line inputs and digital audio such as FM Radio or MP3. The WM8985 digital audio interface can operate in master or slave mode, while an integrated PLL provides flexible clocking schemes. The WM8985 operates at analogue supply voltages from 2.5V to 3.3V, although the digital core can operate at voltages down to 1.71V to save power. Additional power management control enables individual sections of the chip to be powered down under software control.
WM8985
Multimedia CODEC With Class D Headphone and Line Out
FEATURES
Stereo Codec: DAC SNR 98dB, THD -84dB (‘A’ weighted @ 48kHz) ADC SNR 92.5dB, THD -83dB……
