WAU8822YG Nuvoton Technology Corporation of America, WAU8822YG Datasheet

IC STER AUDIO CODEC 24BIT 32-QFN

WAU8822YG

Manufacturer Part Number
WAU8822YG
Description
IC STER AUDIO CODEC 24BIT 32-QFN
Manufacturer
Nuvoton Technology Corporation of America
Series
emPowerAudio™r
Type
Stereo Audior
Datasheets

Specifications of WAU8822YG

Data Interface
I²C, Serial
Resolution (bits)
24 b
Number Of Adcs / Dacs
2 / 2
Sigma Delta
Yes
S/n Ratio, Adcs / Dacs (db) Typ
90 / 94
Voltage - Supply, Analog
2.5 V ~ 3.6 V
Voltage - Supply, Digital
1.65 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
32-QFN
For Use With
WAU8822EVB - BOARD EVALUATION FOR WAU8822
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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Description
The WAU8822 is a low power, high quality CODEC for portable applications. In addition to precision 24-bit stereo
ADCs and DACs, this device integrates a broad range of additional functions to simplify implementation of
complete audio system solutions. The WAU8822 includes drivers for speaker, headphone, and differential or stereo
line outputs, and integrates preamps for stereo differential microphones, significantly reducing external components.
Advanced on-chip digital signal processing includes a 5-band equalizer, a 3-D audio enhancer, a mixed-signal
automatic level control for the microphone or line input through the ADC, and a digital limiter function for the
playback path. Additional digital filtering options are available in the ADC path, to simplify implementation of
specific application requirements such as „wind noise reduction‟. The digital interface can operate as either a master
or a slave. Additionally, an internal fractional PLL is available to generate accurate audio sample rate clocks for the
CODEC derived from a wide range of commonly available system clock frequencies such as 12MHz and 13MHz.
The WAU8822 operates with analog supply voltages from 2.5V to 3.6V, while the digital core can operate at 1.65V
to conserve power. The loudspeaker BTL output pair and two auxiliary line outputs can operate using a 5V supply to
increase output power capability, enabling the WAU8822 to drive 1 Watt into an external speaker. Internal register
controls enable flexible power saving modes by powering down sub-sections of the chip under software control.
The WAU8822 is specified for operation from -40°C to +85°C, and is available with full automotive AEC-/Q100 &
TS16949 qualification. It is packaged in a cost-effective, space-saving 32-lead QFN package.
Key Features
WAU8822 Data SheetRev 0.86
DAC: 94dB SNR and -84dB THD (“A” weighted)
ADC: 90dB SNR and -80dB THD (“A” weighted)
Integrated BTL speaker driver: 1W into 8Ω
Integrated head-phone driver: 40mW into 16Ω
Integrated programmable microphone amplifier
Integrated line input and line output
On-chip PLL
Integrated DSP with specific functions:
5-band equalizer
3-D audio enhancement
Automatic level control
Audio level limiter
Multiple filtering options
RAUXIN
LAUXIN
RMICN
LMICN
RMICP
LMICP
RLIN
LLIN
Microphone
Microphone
Interface
Stereo
Bias
Mixer
Input
GPIO
RADC
LADC
PLL
24-bit Stereo Audio Codec with Speaker Driver
Notch Filters
High Pass &
ADC Filter
Volume
Page 1 of 21
Control
Digital Audio Interface
I
2
S
5-band EQ
3D
Applications
DAC Filter
Volume
Control
Limiter
PCM
Standard audio interfaces: PCM and I
Serial control interfaces with read/write capability
Supports audio sample rates from 8kHz to 48kHz
Personal Media Players
Smartphones
Personal Navigation Devices
Portable Game Players
Camcorders
Digital Still Cameras
Portable TVs
Stereo Bluetooth Headsets
Interface
Control
Serial
LDAC
RDAC
Output
Mixer
WAU8822YG
BTL Speaker
Headphones/
Line drivers
September 4, 2008
emPowerAudio
WAU8822
2
AUXOUT2
AUXOUT1
LHP
RHP
LSPKOUT
RSPKOUT
S

Related parts for WAU8822YG

WAU8822YG Summary of contents

Page 1

... Volume Control Control High Pass & Limiter RADC RDAC Notch Filters 5-band EQ 3D Digital Audio Interface Serial Control PCM Interface PLL Page WAU8822 emPowerAudio ™ Headphones/ Line drivers AUXOUT2 AUXOUT1 LHP Output Mixer RHP BTL Speaker LSPKOUT RSPKOUT WAU8822YG September 4, 2008 ...

Page 2

... Pinout LMICP LMICN LLIN/GPIO2 RMICP RMICN RLIN/GPIO3 FS BCLK Part Number WAU8822YG WAU8822 Data Sheet Rev 0.86 emPowerAudio ™ WAU8822YG 32-lead QFN RoHS Dimension Package 32-QFN Page VSSSPK RSPKOUT AUXOUT2 AUXOUT1 RAUXIN LAUXIN MODE SDIO Package Material Pb-Free September 4, 2008 ...

Page 3

Pin Descriptions Pin # Name 1 LMICP Analog Input 2 LMICN Analog Input 3 LLIN/GPIO2 Analog Input / Digital I/O 4 RMICP Analog Input 5 RMICN Analog Input 6 RLIN/GPIO3 Analog Input / Digital I Digital I/O 8 ...

Page 4

WAU8822 Data Sheet Rev 0.86 emPowerAudio ™ Figure 1: WAU8822 Block Diagram Page September 4, 2008 ...

Page 5

Conditions: VDDC = 1.8V, VDDA = VDDB = VCCSPK = 3.3V, MCLK = 12.88MHz, T 24-bit audio data, 64X oversampling rate, unless otherwise stated. Parameter Symbol Analog to Digital Converter (ADC) 1 Full scale input signal Signal-to-noise ratio 2 Total ...

Page 6

Electrical Characteristics, cont’d. Conditions: VDDC = 1.8V, VDDA = VDDB = VCCSPK = 3.3V, MCLK = 12.288MHz +25°C, 1kHz signal 48kHz, 24-bit audio data, unless otherwise stated. A Parameter Symbol Headphone Output (RHP / LHP with ...

Page 7

Electrical Characteristics, cont’d. Conditions: VDDC = 1.8V, VDDA = VDDB = VCCSPK = 3.3V, MCLK = 12.88MHz +25°C, 1kHz signal 48kHz, 24-bit audio data, unless otherwise stated. A Parameter Symbol Automatic Level Control (ALC) & Limiter: ...

Page 8

Absolute Maximum Ratings Condition VDDB, VDDC, VDDA supply voltages VDDSPK supply voltage (default register configuration) VDDSPK supply voltage (optional low voltage configuration) Core Digital Input Voltage range Buffer Digital Input Voltage range Analog Input Voltage range Industrial operating temperature Storage ...

Page 9

General Description The WAU8822 is a stereo device with identical left and right channels that share common support elements. Additionally, the right channel auxiliary output path includes a dedicated submixer that supports mixing the right auxiliary input directly into ...

Page 10

ADC, DAC, and Digital Signal Processing Each left and right channel has an independent high quality ADC and DAC associated with it. These are high performance, 24-bit delta-sigma converters that are suitable for a very wide range of applications. ...

Page 11

Application Information 2.1 Typical Application Schematic 220K ohm VDDB 3 VSS Analog Inputs: 6 Jack Switch No Connection Detection if “not used” Example 19 C16 1uF 20 C15 R4 ...

Page 12

Power Consumption WAU8822 has flexible power management capability which allows sections not being used to be powered down, to draw minimum current in battery-powered applications. Table – shows typical power consumption in different operating conditions. Mode Conditions OFF Sleep ...

Page 13

Supply Currents of Specific Blocks WAU8822 can be programmed to enable/disable various analog blocks individually, and the current to some of the major blocks can be reduced with minimum impact on performance. The table below shows the change in ...

Page 14

Appendix A: 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 ...

Page 15

Figure 3: DAC Filter Frequency Response Figure 4: DAC Filter Ripple WAU8822 Data Sheet Rev 0.86 emPowerAudio ™ Figure 5: ADC Filter Frequency Response Figure 6: ADC Filter Ripple Page September 4, 2008 ...

Page 16

Figure 7: ADC Highpass Filter Response, Audio Mode 0 0 -20 - -40 - -60 -60 -80 -80 100 100 Figure 8: ADC Highpass Filter Response, HPF ...

Page 17

-10 -10 -10 -15 -15 - Figure 11: EQ Band 1 Gains for ...

Page 18

-10 -10 -10 -10 -15 -15 -15 - ...

Page 19

Appendix D: Register Overview DEC HEX NAME Bit Software Reset 1 01 Power Management 1 DCBUFEN AUX1MXEN 2 02 Power Management 2 RHPEN 3 03 Power Management 3 AUXOUT1EN AUXOUT2EN General Audio Controls 4 04 Audio ...

Page 20

Package Dimensions 32-lead Plastic QFN; 5X5mm WAU8822 Data Sheet Rev 0.86 emPowerAudio ™ 1.0mm thickness, 0.5mm lead pitch Page September 4, 2008 ...

Page 21

... Ordering Information Nuvoton Part Number Description WAU8822YG Version History VERSION DATE A0.0 February, 2008 A0.6 May 2008 A0.86 September 2008 Important Notice Nuvoton products are not designed, intended, authorized or warranted for use as components in systems or equipment intended for surgical implantation, atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, or for other applications intended to support or sustain life ...

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