NAU8812EVB Nuvoton Technology Corporation of America, NAU8812EVB Datasheet - Page 61

• Manufacturer Part Number: NAU8812EVB
• Description: BOARD EVAL FOR NAU8812
• Manufacturer: Nuvoton Technology Corporation of America
• Series: emPowerAudio™r

Specifications of NAU8812EVB

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

oversampling rate but slightly degrades the noise performance. To each lowest power possible after the device is
functioning set ABIASEN[3] address (0x01) bit to LOW.
NAU8812 can be programmed to enable or disable various analog blocks individually. The table below shows the
amount of current consumed by certain analog blocks. Sample rate settings will vary current consumption of the
VDDC supply. VDDC consumes approximately 4mA with VDDC = 1.8V and fs = 48kHz. Lower sampling rates will
draw lower current.
emPowerAudio
Datasheet Revision 2.0
0x0A
0x3A
0x01 DCBUFEN
0x0E MOUTFEN MOUTFAM
Addr
12.11.7. Estimated Supply Currents
LPSPKA
D8
0
™
REFIMP[1:0]
IOBUFEN[2]
ABIASEN[3]
MICBIASEN[4]
PLLEN[5]
DCBUFEN[8]
ADCEN[0]
PGAEN[2]
BSTEN[4]
DACEN[0]
SPKMXEN[2]
MOUTMXEN[3]
NSPKEN[6]
PSPKEN[5]
MOUTEN[7]
LPIPBST
BIT
D7
0
0
DACMT
AUXEN
LPADC LPSPKD
Table 32: Registers associated with Power Saving
D6
Address
0x01
0x02
0x03
Table 33: VDDA 3.3V Supply Current
MOUTF[2:0]
PLLEN MICBIASEN ABIASEN IOBUFEN
D5
DEEMP[1:0]
Page 61 of 109
10K => 300 uA
161k/595k < 100 uA
40uA
600uA
500 uA
2.5mA Clocks Applied
80uA
x64 - ADCOS= 0 => 2.0mA
x128 - ADCOS= 1 => 3.0mA
400uA
200 uA
X64 (DACOS=0)=>1.6mA
x128(DACOS=1)=>1.7mA
400uA
200uA
1mA from VDDSPK + 100uA (VDDA = 5V mode)
1mA from VDDSPK + 100uA (VDDA = 5V mode)
100uA
LPDAC
D4
VDDA CURRENT
TRIMREG
DACOS
ADCOS
D3
AUTOMT
D2
0
0
IBADJ
D1
0
0
REFIMP
NAU8812
January 2011
DACPL
ADCPL
D0
0
Default
0x000
0x000
0x100
0x000