AN12978A Datasheet, PDF (4/21 Pages) Panasonic Semiconductor – Monaural BTL amplifier IC with built-in AGC (I2C bus-control correspondence)

AN12978A
„ Application Circuit Example (Block Diagram)
Speaker 8 Ω
VCC = 3 V
Shutdown
1 μF
OUT_NEG VREFSP
11
10
9
Operate
1 μF
VCCD
SD
8
GNDSP ₁₂
+14 dB
+14dB
OUT_POS ₁₃
VCCSP = 3 V
14
1 μF
GND 15
DET
AGC
+3 dB/+6 dB
1 μF
7
I²C-BUS
Control
6
2.2 kΩ
SDA
5
2.2 kΩ
SCL
VCCD
= 1.8 V
1
VREF
1 μF
2
3
PREOUT
FB
100 pF
4
GND
10 kΩ
10 kΩ
0.1 μF
INPUT
Note) 1. This circuit and these circuit constants show an example and do not guarantee the design as a mass-production set.
2. The threshold voltage at 8pin has the VCCD dependency.
SDE00030BEB
4