WAU8822YG Nuvoton Technology Corporation of America, WAU8822YG Datasheet - Page 7

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

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

Electrical Characteristics, cont’d.
Conditions: VDDC = 1.8V, VDDA = VDDB = VCCSPK = 3.3V, MCLK = 12.88MHz,
T
Parameter
Automatic Level Control (ALC) & Limiter: ADC path only
Target record level
Programmable gain
Gain hold time
Gain ramp-up (decay)
Gain ramp-down (attack)
Mute Attenuation
Microphone Bias
Bias voltage
Bias current source
Output noise voltage
Digital Input/Output
Input HIGH level
Input LOW level
Output HIGH level
Output LOW level
Input capacitance
Notes
WAU8822 Data Sheet Rev 0.86
emPowerAudio
A
1. Full Scale is relative to the magnitude of VDDA and can be calculated as FS = VDDA/3.3.
2. Distortion is measured in the standard way as the combined quantity of distortion products plus noise. The signal level for
3. Time values scale proportionally with MCLK. Complete descriptions and definitions for these values are contained in the
4. With default register settings, SPKVDD should be 1.5xVDDA (but not exceeding maximum recommended operating
= +25°C, 1kHz signal, fs = 48kHz, 24-bit audio data, unless otherwise stated.
distortion measurements is at 3dB below full scale, unless otherwise noted.
detailed descriptions of the ALC functionality.
voltage) to optimize available dynamic range in the AUXOUT1, AUXOU2, RSPKOUT, and LSPKOUT outputs stages.
3
™
3
3
Symbol
V
I
MICBIAS
t
MICBIAS
HOLD
t
t
V
V
V
V
DCY
ATK
V
OH
OL
IL
IH
n
Comments/Conditions
Doubles every gain step,
with 16 steps total
ALC Mode
Limiter Mode
ALC Mode
Limiter Mode
See Figure 3
1kHz to 20kHz
I
I
Page 7 of 21
Load
Load
ALC = 0
ALC = 1
ALC = 0
ALC = 1
= 1mA
= -1mA
Min
VDDC
VDDC
-22.5
0.7 *
0.9 *
-12
0 / 2.67 / 5.33 / … / 43691
0.25 / 0.5 / 1 / … / 128
0.50, 0.60,0.65, 0.70,
4 / 8 / 16 / … / 4096
1 / 2 / 4 / … / 1024
1 / 2 / 4 / … / 1024
0.75, 0.85, or 0.90
Typ
120
14
10
3
September 4, 2008
Max
VDDC
VDDC
35.25
0.3 *
0.1 *
-1.5
Units
nV/√Hz
VDDA
VDDA
dBFS
mA
dB
ms
ms
ms
ms
ms
dB
pF
V
V
V
V