WAU8812RG Nuvoton Technology Corporation of America, WAU8812RG Datasheet

IC MON AUD CODEC SPKR DVR 28SSOP

WAU8812RG

Manufacturer Part Number
WAU8812RG
Description
IC MON AUD CODEC SPKR DVR 28SSOP
Manufacturer
Nuvoton Technology Corporation of America
Series
emPowerAudio™r
Type
Audio Codecr
Datasheet

Specifications of WAU8812RG

Data Interface
Serial
Number Of Adcs / Dacs
1 / 1
Sigma Delta
No
S/n Ratio, Adcs / Dacs (db) Typ
91 / 93
Voltage - Supply, Analog
2.5 V ~ 3.6 V
Voltage - Supply, Digital
1.71 V ~ 1.95 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
28-SSOP
For Use With
WAU8812EVB - BOARD EVALUATION FOR WAU8812
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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1.
The WAU8812 is a cost effective and low power wideband MONO audio CODEC. It is designed for voice telephony
related applications. Functions include Automatic Level Control (ALC) with noise gate, PGA, standard audio interface
I
single ended auxiliary input (multi purpose). There are few variable gain control stages in the audio path. It also
includes MONO line output and integrated BTL speaker driver.
The analog inputs have PGA on the front end, allowing dynamic range optimization with a wide range of input
sources. The microphone amplifiers have a programmable gain from -12dB to +35.25dB to handle both amplified
microphones. In addition to a digital high pass filter to remove DC offset voltages, the ADC also features voice band
digital filtering. Voice-band data is accepted by the audio interface (I
and mixing, programmable-gain amplifiers (PGA), and soft muting. The digital interfaces, 2-Wire or SPI, have
independent supply voltage to allow integration into multiple supply systems. The WAU8812 operates at supply
voltages from 2.5V to 3.6V, although the digital core can operate at voltage as low as 1.71V to save power.
2.
24-bit signal processing linear Audio CODEC
Analog I/O
Interfaces
emPowerAudio
Preliminary Datasheet Revision 0.85
2
S, PCM with time slot assignment, and on-chip PLL. The device provides one differential microphone input and one
GENERAL DESCRIPTION
FEATURES
Audio DAC: 93dB SNR and -84dB THD
Audio ADC: 91dB SNR and -79dB THD
Support variable sample rates for 8 - 48KHz
Integrated BTL Speaker Driver 0.8W into 8Ω / 5V
Integrated Headset Driver 40mW into 16Ω / 3.3V
Integrated programmable Microphone Amplifier
Integrated Line Input and Line Output
Integrated Audio Switches
Earphone / Speaker / Line Output selection
Microphone / Line Inputs selection
Low Noise bias supplied for microphone
Digital Playback Limiter
On-chip PLL
I
PCM output with time slot assignment
SPI & 2-Wire serial control Interface (I
Read/Write capable)
2
S digital interface
2
C style;
Page 1 of 15
Mono Audio Codec with Speaker Driver
Low Power, Low Voltage
Additional features
Applications
Analog Supply: 2.5V to 3.6V
Digital Supply: 1.71V to 1.95V
Nominal Operating Voltage: 3.3V
Programmable ALC
ADC Notch Filter
Programmable High Pass Filter
Digital A/D-D/A Passthrough
AEC-Q100 & TS16949 qualification
Industrial temperature: range: –40°C to +85°C
VoIP Telephones
Conference speaker-phone
IP PBX
Mobile Telephone Hands-free Kits
Residential & Consumer Intercoms
General Purpose low power audio CODEC
2
S). The DAC converter path includes filtering
October 2008
emPowerAudio

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WAU8812RG Summary of contents

Page 1

GENERAL DESCRIPTION The WAU8812 is a cost effective and low power wideband MONO audio CODEC designed for voice telephony related applications. Functions include Automatic Level Control (ALC) with noise gate, PGA, standard audio interface ...

Page 2

PIN CONFIGURATION VREF MIC - MIC + MICBIAS NC VDDA VSSA VSSA VDDC VDDB VSSD ADCOUT DACIN FS emPowerAudio ™ Preliminary Datasheet Revision 0. WAU8812 MONO AUDIO ...

Page 3

PIN DESCRIPTION Pin Name 28-Pin 32-Pin VREF 1 29 MIC MIC MICBIAS VDDA 6 2 VSSA 7 3 VSSA VDDL VDDC 9 6 VDDB 10 7 ...

Page 4

BLOCK DIAGRAM emPowerAudio ™ Preliminary Datasheet Revision 0.85 Figure 3: WAU8812 General Block Diagram Page October 2008 ...

Page 5

REGISTER DESCRIPTION Register Address DEC HEX 0x0 1 0x01 DCBUFEN 0 AUXEN 2 0x02 0x03 0 MOUTEN NSPKEN 4 0x04 BCLKP FSP 5 0x05 0x06 CLKM MCLKSEL[2:0] 7 0x07 SPIEN ...

Page 6

ABSOLUTE MAXIMUM RATINGS CONDITION VDDB, VDDC, VDDA supply voltages VDDSPK supply voltage (MOUT3V=0, SPK3V=0) VDDSPK supply voltage (MOUT3V=1, SPK3V=1) Core Digital Input Voltage range Buffer Digital Input Voltage range Analog Input Voltage range Industrial operating temperature Storage temperature range ...

Page 7

ELECTRICAL CHARACTERISTICS VDDC = 1.8V, VDDA = VDDB = SPK3V = 3.3V, T otherwise stated. PARAMETER Analogue to Digital Converter (ADC) 1 Full scale input signal 2 Signal to Noise Ratio 3 Total Harmonic Distortion Digital to Analogue Converter ...

Page 8

VDDC = 1.8V, VDDA = VDDB = SPK3V = 3.3V, T otherwise stated. PARAMETER SYMBOL Speaker Output PGA Programmable Gain Programmable Gain Step Size BTL Speaker Output (SPKOUT+, SPKOUT- with 8Ω bridge tied load) 7 Full scale output Output Power ...

Page 9

VDDC = 1.8V, VDDA = VDDB = SPK3V = 3.3V, T otherwise stated. PARAMETER SYMBOL Automatic Level Control (ALC)/Limiter – ADC only Target Record Level Programmable Gain Programmable Gain Step Size 4, 6 Gain Hold Time tHOLD Gain Ramp-Up (Decay) ...

Page 10

DIGITAL FILTER CHARACTERISTICS PARAMETER ADC Filter Passband Passband Ripple Stopband Stopband Attenuation Group Delay ADC High Pass Filter High Pass Filter Corner Frequency DAC Filter Passband Passband Ripple Stopband Stopband Attenuation Group Delay TERMINOLOGY 1. Stop Band Attenuation (dB) ...

Page 11

Figure 4: DAC Filter Frequency Response Figure 6: DAC Filter Ripple emPowerAudio ™ Preliminary Datasheet Revision 0.85 Figure 5: ADC Filter Frequency Response Figure 7: ADC Filter Ripple Page October 2008 ...

Page 12

TYPICAL APPLICATION emPowerAudio ™ Preliminary Datasheet Revision 0.85 Figure 8: Application Diagram 28-Pin SSOP Figure 9: Application Diagram For 32-Pin QFN Page October 2008 ...

Page 13

PACKAGE SPECIFICATION 12.1. 28 Pin SSOP SEATING PLANE DIMENSION IN MM SYMBOL MIN. A 0. 0.22 0.09 c 10. 0.55 ...

Page 14

QFN emPowerAudio ™ Preliminary Datasheet Revision 0.85 Page October 2008 ...

Page 15

ORDERING INFORMATION Nuvoton Part Number Description WAU8812_ _ emPowerAudio ™ Preliminary Datasheet Revision 0.85 Package Material Pb-free Package Package Type 28-Pin SSOP Package Y = 32-Pin QFN Package Page October 2008 ...

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