• Codec:
• DAC SNR 98dB, THD -84dB (’A’ weighted @ 48kHz)
• ADC SNR 90dB, THD -84dB (’A’ weighted @ 48kHz)
• 1W output power into 8W BTL speaker / 5V SPKVDD
• Capable of driving piezo speakers
• Mic Preamp:
• Differential microphone Interface
• Programmable preamp gain
• Psuedo differential inputs with common mode rejection
• Programmable ALC / Noise Gate in ADC path
• Low-noise bias supplied for electret microphones 
• Other Features: 
• Integrated 0-6dB video buffer with LPF filter and clamp
• Digital playback limiter
• 5-band Equaliser (record or playback)
• Programmable ADC High Pass Filter (wind noise reduction)
• Programmable ADC Notch Filter
• Aux inputs for analog input signals or ‘beep’
• On-chip PLL supporting 12, 13, 19.2MHz and other clocks
• Low power, low voltage - 2.5V to 3.6V (digital core: 1.62V to 3.6V)
• Power consumption <30mW all-on with 2.5V supplies 
• 5x5mm 32-pin QFN package

The WM8982 is a low power, high quality codec with integrated video buffer designed for portable applications such as Digital still camera or Digital Camcorder.

The device integrates a preamp for a differential mic, and includes drivers for speaker and line outputs. External component requirements are reduced as no separate microphone or headphone/speaker amplifiers are required.

An integrated video buffer is provided which has programmable gain from 0-6dB, sync-tip clamp and a 3rd order input low pass filter for signal re-construction.

Advanced on-chip digital signal processing includes a 5-band equaliser, a mixed signal Automatic Level Control for the microphone or line input through the ADC as well as a purely digital limiter function for record or playback. Additional digital filtering options are available in the ADC path, to cater for application filtering such as ‘wind noise reduction’.

The WM8982 CODEC can operate as a master or a slave. An internal PLL can generate all required audio clocks for the Codec from common reference clock frequencies, such as 12MHz and 13MHz.

The WM8982 operates at analogue supply voltages from 2.5V to 3.3V, although the digital core can operate at voltages down to 1.62V to save power. The speaker outputs and mono line output can run from a 5V supply if increased output power is required. Individual sections of the chip can also be powered down under software control.