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WM8983GEFLR Datasheet

  • WM8983GEFLR

  • Mobile Multimedia CODEC with 1W Speaker Driver

  • 1508.99KB

  • 88頁

  • WOLFSON

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DESCRIPTION
The WM8983 is a low power, high quality stereo codec designed
for portable multimedia applications. Highly flexible analogue
mixing functions enable new application features, combining hi-fi
quality audio with voice communication.
The device integrates preamps 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 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. 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
碌-law
companding are fully supported.
The WM8983 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. Speaker supplies can operate up to 5V for
increased speaker output power. Additional power management
control enables individual sections of the chip to be powered
down under software control.
WM8983
Mobile Multimedia CODEC with 1W Speaker Driver
FEATURES
Stereo Codec:
鈥?/div>
DAC SNR 98dB, THD -84dB (鈥楢鈥?weighted @ 48kHz)
鈥?/div>
ADC SNR 95dB, THD -84dB (鈥楢鈥?weighted @ 48kHz)
鈥?/div>
Speaker driver (1W into 8鈩?BTL with 5V supply)
鈥?/div>
Headphone driver with 鈥榗apless鈥?option
鈥?/div>
40mW per channel output power into 16鈩?/ 3.3V AVDD2
鈥?/div>
Pop and click suppression
Mic Preamps:
鈥?/div>
Stereo Differential or mono microphone Interfaces
鈥?/div>
Programmable preamp gain
鈥?/div>
Psuedo differential inputs with common mode rejection
鈥?/div>
Programmable ALC / Noise Gate in ADC path
鈥?/div>
Low-noise bias supplied for electret microphones
Other Features:
鈥?/div>
Enhanced 3-D function for improved stereo separation
鈥?/div>
Highly flexible mixing functions
鈥?/div>
5-band equaliser (ADC or DAC path)
鈥?/div>
ADC Programmable high pass filter (wind noise reduction)
鈥?/div>
ADC Programmable IIR notch filter
鈥?/div>
Aux inputs for stereo analog input signals or 鈥榖eep鈥?/div>
鈥?/div>
PLL supporting various clocks between 8MHz-50MHz
鈥?/div>
Sample rates supported (kHz): 8, 11.025, 16, 12, 16, 22.05,
24, 32, 44.1, 48
鈥?/div>
2.5V to 3.6V analogue supplies
鈥?/div>
1.71V to 3.6V digital supplies
鈥?/div>
2.5V to 5.5V speaker supplies
鈥?/div>
5x5mm 32-pin QFN package
APPLICATIONS
鈥?/div>
Multimedia phone
WOLFSON MICROELECTRONICS plc
To receive regular email updates, sign up
at
http://www.wolfsonmicro.com/enews/
Product Preview, August 2005, Rev 1.1
Copyright
餂?005
Wolfson Microelectronics plc

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