NAU8812EVB Nuvoton Technology Corporation of America, NAU8812EVB Datasheet - Page 104

• 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

Note 1: All non-polar capacitors are assumed to be low ESR type parts, such as with MLC construction or similar. If
Note 2: Load resistors to ground on outputs may be helpful in some applications to insure a DC path for the output
Note 3: To minimize pops and clicks, large polarized output capacitors should be a low leakage type.
Note 4: Depending on the microphone device and PGA gain settings, common mode rejection can be improved by
emPowerAudio
Datasheet Revision 2.0
1.2k ohm
capacitors are not low ESR, additional 0.1uF and/or 0.01uF capacitors may be necessary in parallel with the
bulk 4.7uF capacitors on the supply rails.
capacitors to charge/discharge to the desired levels. If the output load is always present and the output load
provides a suitable DC path to ground, then the additional load resistors may not be necessary. If needed,
such load resistors are typically a high value, but a value dependent upon the application requirements.
choosing the resistors on each node of the microphone such that the impedance presented to any noise on
either microphone wire is equal.
R2
™
VSS
VDDA
1.2k ohm
4.7uF
C6
R1
4.7uF
1uF
1uF
C8
C7
C1
VDDC
4.7uF
C2
VDDB
10nF
C11
4.7uF
C3
VDDA
VDDL
VDDC
VDDB
VSSD
VSSA
VSSA
Figure 57: Application Diagram for 32-Pin QFN
MICBIAS
NC
1
2
3
4
5
6
7
8
Page 104 of 109
MONO AUDIO
4.7uF
C9
QFN 32-Pin
NAU8812
CODEC
VSS
C10
1uF
VDDSPK
4.7uF
C4
24
23
22
21
20
19
18
17
NC
VSSSPK
VSSSPK
SPKOUT +
MOUT
MODE
SO
SDIO
NAU8812
January 2011
1uF
C5