TDA7449D 查看數據表（PDF） - STMicroelectronics
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TDA7449D Datasheet PDF : 19 Pages
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TDA7449
Table 5. Electrical Characteristcs (refer to the test circuit Tamb = 25°C, VS = 9V, RL= 10KΩ, RG = 600Ω,
all controls flat (G = 0dB), unless otherwise specified)
Symbol
Parameter
Test Condition
Min. Typ. Max. Unit
SUPPLY
VS
Supply Voltage
6
9
10.2
V
IS
Supply Current
7
mA
SVR
Ripple Rejection
60
90
dB
INPUT STAGE
RIN
Input Resistance
100
KΩ
VCL
Clipping Level
THD = 0.3%
2
2.5
Vrms
SIN
Input Separation
The selected input is grounded 80
100
dB
through a 2.2µ capacitor
Ginmin
Minimum Input Gain
-1
0
1
dB
Ginman
Maximum Input Gain
30
dB
Gstep
Step Resolution
2
dB
VOLUME CONTROL
CRANGE
Control Range
45
47
49
dB
AVMAX
Max. Attenuation
45
47
49
dB
ASTEP
Step Resolution
0.5
1
1.5
dB
EA
Attenuation Set Error
AV = 0 to -24dB
-1.0
0
1.0
dB
AV = -24 to -47dB
-1.5
0
1.5
dB
ET
Tracking Error
AV = 0 to -24dB
0
1
dB
AV = -24 to -47dB
0
2
dB
VDC
DC Step
adjacent attenuation steps
from 0dB to AV max
0
3
mV
0.5
mV
Amute
Mute Attenuation
80
100
dB
BASS CONTROL (1)
Gb
Control Range
Max. Boost/cut
+12.0 +14.0 +16.0 dB
BSTEP
Step Resolution
1
2
3
dB
RB
Internal Feedback Resistance
18.75 25 31.25 KΩ
TREBLE CONTROL (1)
Gt
Control Range
Max. Boost/cut
+13.0 +14.0 +15.0 dB
TSTEP
Step Resolution
1
2
3
dB
3/19
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