TDA7409 查看數據表（PDF） - STMicroelectronics
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TDA7409 Datasheet PDF : 25 Pages
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TDA7409
ELECTRICAL CHARACTERISTICS (continued)
Symbol
Parameter
Test Conditions
QBASS Quality Factor
Q1
Q2
Q3
Q4
DCGAIN Bass-DC-Gain
DC = off
DC = on
TREBLE CONTROL
CRANGE Control Range
ASTEP Step Resolution
fC
Center Frequency
fC1
fC2
fC3
fC4
SPEAKER ATTENUATORS
CRANGE Control Range
ASTEP Step Resolution
only for attenuation up to 24dB
AMUTE Output Mute Attenuation
EE Attenuation Set Error
VDC DC Steps
Adjacent Attenuation Steps
TZC Zero Cross Timer
Data bit D1=1 , D2=1
Vth Zero Cross Threshold
FADER OUTPUTS
VCLIP Clipping Level
d = 0.3%
RL Output Load Resistance
CL Output Load Capacitance
ROUT Output Impedance
VDC DC Voltage Level
SUBWOOFER ATTENUATORS
CRANGE Control Range
ASTEP Step Resolution
AMUTE Output Mute Attenuation
Min. Typ. Max. Unit
0.9
1
1.1
1.1 1.25 1.4
1.3
1.5
1.7
1.8
2
2.2
-1
0
1
dB
4
4.4
6
dB
+14
+15 +16
dB
0.5
1
1.5
dB
8
10
12
kHz
10
12.5
15
kHz
12
15
18
kHz
14
17.5
21
kHz
-53
50
-47
dB
0.5
1
1.5
dB
80
90
dB
-2
2
dB
0.10
5
mV
29
37
45
ms
+20
mV
2.20
2
4.3
2.60
30
4.5
VRMS
kΩ
10
nF
100
Ω
4.7
V
-53
50
-47
dB
0.5
1
1.5
dB
80
90
dB
6/25
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