WAU8822YG Nuvoton Technology Corporation of America, WAU8822YG Datasheet - Page 13

• 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

2.3
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 current
consumed with different register settings. Sample rate settings will vary current consumption of VDDC supply,
which draws consumes approximately 4mA @ 1.8V and fs = 48kHz. Lower sampling rates draw lower current.
WAU8822 Data Sheet Rev 0.86
emPowerAudio
Supply Currents of Specific Blocks
Dec
58
Register
1
2
3
™
Hex
3A
01
02
03
Management
Management
Management
Management
Function
Power
Power
Power
Power
Table 2: VDDA 3.3V Supply Current in Various Modes
1
2
3
4
AUXOUT2EN[7]
AUXOUT1EN[8]
AUX2MXEN[6]
AUX1MXEN[7]
MICBIASEN[4]
REGVOLT[2:3]
MICBIASM[4]
DCBUFEN[8]
REFIMP[1:0]
IOBUFEN[2]
ABIASEN[3]
BIASGEN[4]
LADCEN[0]
RADCEN[1]
RPGAEN[3]
LDACEN[0]
RDACEN[1]
LPGAEN[2]
LMIXEN[2]
RMIXEN[3]
IBIADJ[1:0]
LPIPBST[7]
LBSTEN[4]
RBSTEN[5]
RSPKEN[5]
LSPKEN[6]
LPSPKD[5]
LHPEN[7]
RHPEN[8]
LPADC[6]
LPDAC[8]
PLLEN[5]
SLEEP[6]
Bit
Page 13 of 21
+100μA for 80kΩ and 300kΩ
+260μA for 3kΩ
+100μA
+600μA
+540μA
+2.5 mA +1/5mA from VDDC with
clocks applied
+200μA
+200μA
+140μA
+2.3 mA with 64X OSR
+3.3 mA with 128X OSR
+2.3 mA with 64X OSR
+3.3 mA with 128X OSR
+300μA
+300μA
+650μA
+650μA
+800μA
+800μA
+1.6 mA with 64X OSR
+1.7 mA with 128X OSR
+1.6 mA with 64X OSR
+1.7 mA with 128X OSR
+250μA
+250μA
+1.1 mA from VDDSPK
+1.1 mA from VDDSPK
+225μA
+225μA
-1.2mA with IBIADJ at 11
-1.1mA with no SNR decrease @ 8kHz
-600μA with no SNR decrease @ 8kHz
-1.1mA with 1.4dB SNR decrease
@ 44.1kHz
VDDA current increase/
Decrease when enabled
September 4, 2008