AN12959A Datasheet, PDF (4/27 Pages) Panasonic Semiconductor – I2C bus control compatible AGC built-in stereo BTL amplifier IC

AN12959A
„ Application Circuit Example (Block Diagram)
VCC = 3 V
7.5 Ω to 10 Ω
Piezoelectric speaker
GND_SPR
ROUT_POS
E2
N.C.
D2
+14 dB
E1
GND
D3
N.C.
C3
VREF
1 μF
1 μF
VCC
E3
E4
E5
GND
ROUT_NEG _D1
7.5 Ω to 10 Ω
VCC_SP = 6.1 V
VCC_SP _C1
1 μF
VREF_SP
C2
1 μF
Piezoelectric speaker
7.5 Ω to 10 Ω
B1
LOUT_NEG
GND_SPL
A1
+14 dB
Gain Select
+6 dB / 0 dB
+
AGC
−
VREG
(5 V)
AGC
DET
AGC
−
+
+14 dB
+6 dB / 0 dB
Gain Select
+14 dB
I²C-BUS
Control
D4 PREOUT_R
10 kΩ
D5
FB_R
1500 pF
10 kΩ _{INPUT_R}
0.1 μF
C5 ^FB_L
10 kΩ INPUT_L
0.1 μF
10 kΩ
C4
1500 pF
PREOUT_L
A5
GND
7.5 Ω to 10 Ω
A2
LOUT_POS
B2
B3
A3
B4
A4
N.C. S.D VCC_D SDA SCL
0.1 μF
*
VCC_D
Operate
Shutdown
2.2 kΩ
1 μF
VCC_D = 1.8 V
2.2 kΩ
B3 pin Operate voltage
VCC_D = 1.8 V
VCC_D = 2.6 V
Operate > 1.62 V
Operate > 2.34 V
Shut-down < 0.18 V Shut-down < 0.26 V
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 Pin B3 has the VCC_D dependency.
SDE00028BEB
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