WM8983 Mobile Multimedia CODEC with 1W Speaker Driver DESCRIPTION FEATURES Stereo CODEC: The WM8983 is a low power, high quality stereo CODEC designed for portable multimedia applications. Highly flexible DAC SNR 98dB, THD -84dB (A weighted 48kHz) analogue mixing functions enable new application features, ADC SNR 95dB, THD -84dB (A weighted 48kHz) combining hi-fi quality audio with voice communication. Speaker driver (1W into 8 BTL with 5V supply) The device integrates preamps for stereo differential mics, - SNR 90dB and includes drivers for speaker, headphone and differential - PSRR 80dB or stereo line output. External component requirements are Headphone driver with capless option reduced as no separate microphone or headphone amplifiers - 40mW/channel output power into 16 / 3.3V AVDD2 are required. Pop and click suppression Advanced on-chip digital signal processing includes a 5-band equaliser, a mixed signal Automatic Level Control for the Mic Preamps: microphone or line input through the ADC as well as a purely Stereo Differential or mono microphone Interfaces digital limiter function for record or playback. A programmable high pass filter in the ADC path is provided for wind noise Programmable preamp gain reduction and an IIR with programmable coefficients can be Pseudo differential inputs with common mode rejection used as a notch filter to suppress fixed-frequency noise. Programmable ALC / Noise Gate in ADC path The WM8983 digital audio interface can operate in master or Low-noise bias supplied for electret microphones slave mode, while an integrated PLL supports flexible clocking schemes. A-law and -law companding are fully supported. Other Features: The WM8983 operates at analogue supply voltages from 2.5V Enhanced 3-D function for improved stereo separation to 3.3V, although the digital core can operate at voltages Highly flexible mixing functions down to 1.71V to save power. Speaker supplies can operate 5-band equaliser (ADC or DAC path) up to 5V for increased speaker output power. Additional ADC Programmable high pass filter (wind noise reduction) power management control enables individual sections of the ADC Programmable IIR notch filter chip to be powered down under software control. 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, 24, 32, 44.1, 48 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 APPLICATIONS Multimedia mobile phones Rev 4.6 Copyright Cirrus Logic, Inc., 20052016 AUG 16 WM8983 BLOCK DIAGRAM CSB/GPIO1 SDIN SCLK MODE ADCDAT LRC DACDAT BCLK MCLK AVDD1 VMID AGND1 2 Rev 4.6 DGND DBVDD DCVDD AGND2 AVDD2 OUT4 MIXER OUT4 + AUXR -1 Stereo line or AUXL OUT3 MIXER differential output OUT3 + LEFT OUTPUT MIXER -1 NOISY ADC DIGITAL LOUT1 GND Gains: -12dB to +35.25dB FILTERS Hi-Fi DAC LIN VMID DIGITAL Volume LOUT1VOL Mic L FILTERS LDAC Rbias LIP ADC 5 Band EQ Volume Stereo headphone IP PGA output IP BOOST/MIX 3D Enhance 5 Band EQ L2/ WM8983 GPIO2 ALC / Limiter NOISY 3D Enhance GND ROUT1VOL Gains: -12dB to +35.25dB Wind noise RIN ROUT1 Playback filter R limiter Mic RDAC Rbias RIP ADC Programmable RIGHT IIR notch filter OUTPUT IP PGA LOUT2 MIXER IP BOOST/MIX R2/ GPIO3 LOUT2VOL Stereo or BTL ROUT2VOL speaker output ROUT2 -1 ADCREF, DACREF PLL GPIO1 MICBIAS 2 I S / PCM AUDIO CONTROL INTERFACE 50k 50k INTERFACE A-law and u-law support 4k 5k 250k 250k