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AN12945A Datasheet - Page 4

Download or read online Panasonic Corporation AN12945A Monophonic Audio Power IC With Built-in AGC pdf datasheet.
Also see for AN12945A: Datasheet #2 (5 pages)



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AN12945A
Application Circuit Example (Block Diagram)
1 μF
VREF
16
Audio input
33 kΩ
17
0.47 μF
47 kΩ
−28 dBV
−22 dBV
18
For LPF
GND
19
20
−16 dBV
0.47 μF
Note) This circuit and these circuit constants show an example and do not guarantee the design as a mass-production set.
VREG
1 μF
13
15
14
VCC
+3 dB
+
+3 dB
AGC
+9 dB
AGC
Det
1
3
2
100 kΩ
GND
0.47 μF
1 μF
AGC DET
SDF00041BEB
1 μF
12
11
AGC ON/OFF
10
&
LEVEL SET
VREG
9
OUT
2.25 V
−2 dBV
8
+14 dB
7
−2 dBV
6
+14 dB
VCC-SP
4
5
1 μF
1 μF
VREFSP
3.30 V
VCC
From
microcomputer
10 kΩ
12 kΩ
GND-SP
Speaker
8 Ω
+4 dBV
5.00 V
VCC_SP
4

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