WM8983GEFL/RV Wolfson Microelectronics, WM8983GEFL/RV Datasheet
WM8983GEFL/RV
Manufacturer Part Number
WM8983GEFL/RV
Description
Audio CODECs Mbl Multimedia CODEC w/ 1W Speaker Driver
Manufacturer
Wolfson Microelectronics
Specifications of WM8983GEFL/RV
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
QFN-32
Minimum Operating Temperature
- 25 C
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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 µ-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.
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FEATURES
Stereo CODEC:
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Mic Preamps:
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Other Features:
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APPLICATIONS
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DAC SNR 98dB, THD -84dB (‘A’ weighted @ 48kHz)
ADC SNR 95dB, THD -84dB (‘A’ weighted @ 48kHz)
Speaker driver (1W into 8Ω BTL with 5V supply)
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Headphone driver with ‘capless’ option
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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 8MHz-50MHz
Sample rates supported (kHz): 8, 11.025, 16, 12, 16, 22.05,
2.5V to 3.6V analogue supplies
1.71V to 3.6V digital supplies
2.5V to 5.5V speaker supplies
5x5mm 32-lead QFN package
Multimedia mobile phones
24, 32, 44.1, 48
SNR 90dB
PSRR 80dB
40mW/channel output power into 16Ω / 3.3V AVDD2
Production Data, November 2006, Rev 4.0
Copyright ©2006 Wolfson Microelectronics plc
WM8983
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