The WM8983 is a low power stereo codec featuring highly flexible analog mixing functions to enable new applications and combining hi-fi quality audio with voice communication. This IC integrates pre-amps for stereo differential mics, and includes drivers for speaker, headphone and differential or stereo line output. External component requirements are reduced as no separate microphone or headphone amplifiers are required. Advanced on-chip digital signal processing includes a five-band equalizer, a mixed-signal automatic level control for the microphone or line input through the A/D converter, as well as a purely digital limiter function for record or playback. A programmable high pass filter in the ADC path is provided for wind noise reduction and an IIR with programmable coefficients can be used as a notch filter to suppress fixed-frequency noise. The WM8983 digital audio interface can operate in master or slave mode, while an integrated PLL supports flexible clocking schemes. A-law and ?-law companding are fully supported.
Headphone driver with capless option
40mW/channel output power into 16W/3.3V AVDD2
Pop and click suppression
Stereo differential or mono microphone interfaces
Programmable preamp gain
Pseudo-differential inputs with common mode rejection
Programmable ALC/noise gate in ADC path
Low-noise bias supplied for electret microphones
Enhanced 3-D function for improved stereo separation
Highly flexible mixing functions
5-band equaliser (ADC or DAC path)
ADC programmable high pass filter (wind noise reduction)
ADC programmable IIR notch filter
Aux inputs for stereo analog input signals or beep
PLL supporting various clocks between 8 to 50MHz.
Applications:
Multimedia mobile phones
Decoder or Encoder Signal Type - Audio
Decoder/Encoder Type - Analog to Digital Decoder/Encoder
Decoder/Encoder Type - Digital to Analog Decoder/Encoder
