apa2010 Anpec Electronics Corporation, apa2010 Datasheet - Page 14

• Manufacturer Part Number: apa2010
• Description: 3w Mono Class-d Audio Power Amplifier Features
• Manufacturer: Anpec Electronics Corporation

Output LC Filter (Cont.)
Figure 3’ s low pass filter cut-off frequency is F
Mixing Two Single-Ended Input Signals
For mixing two Single-Ended (SE) input signals, please
refer to Figure 4. The gains of each input can be set
difference:
The corner frequency of each input high- pass-filter also
can be set by R
The non-inverting input’ s resistor (R
need to match the impedances of invert inputs.
Copyright
Rev. A.5 - Mar., 2008
Application Information (Cont.)
APA2010/2010A
Figure 4. Mixing Two Single-Ended Input Signals
F
C
R
A
A
C(lowpass)
P
P
V
V
(1)
(2)
R
C
1
1
//
//R
2
2
C
ANPEC Electronics Corp.
2
2
1
2
C
C
150k
150k
C
&C
P
Figure 3. LC output filter
1
2
1
VON
C
R
VOP
R
1
LC
, and R
1
1
1
R
R
R
R
R
P
1
(or
(or
2
C
R
R
1
2
47 H
2
2
2
125k
125k
INN
INP
2
&C
H
1 F
1 F
2
.
)
)
P
) and capacitor (C
4
C
(4)
(7)
(8)
(5)
(6)
P
)
14
Layout Recommendation
0.65mm
0.35mm
Figure 5. WLCSP-9 land pattern recommendation
Figure 6. TDFN3x3-8 Layout Recommendation
1.2mm
ThermalVia
0.3mm X 5
diameter
0.5mm
TDFN3X3-8 Land Pattern
Recommendation
Ground plane for
9 X
ThermalPAD
1.8mm
0.275mm
www.anpec.com.tw
0.275mm