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參數(shù)資料
| 型號： | TDA7449L |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 音頻控制 |
| 英文描述： | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDIP20 |
| 封裝： | DIP-20 |
| 文件頁數(shù)： | 8/14頁 |
| 文件大?。?/td> | 102K |
| 代理商： | TDA7449L |
3/14
TDA7449L
Table 5. Electrical Characteristcs (refer to the test circuit Tamb = 25°C, VS = 9V, RL= 10K, RG = 600,
all controls flat (G = 0dB), unless otherwise specified)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
SUPPLY
V
Supply Voltage
6
9
10.2
V
IS
Supply Current
7
mA
SVR
Ripple Rejection
60
90
dB
INPUT STAGE
RIN
Input Resistance
100
K
VCL
Clipping Level
THD = 0.3%
2
2.5
Vrms
SIN
Input Separation
The selected input is grounded
through a 2.2
capacitor
80
100
dB
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
0
3
mV
from 0dB to AV max
0.5
mV
Amute
Mute Attenuation
80
100
dB
SPEAKER ATTENUATORS
CRANGE
Control Range
76
dB
SSTEP
Step Resolution
0.5
1
1.5
dB
EA
Attenuation Set Error
AV = 0 to -20dB
-1.5
0
1.5
dB
AV = -20 to -56dB
-2
0
2
dB
VDC
DC Step
adjacent attenuation steps
0
3
mV
Amute
Mute Attenuation
80
100
dB
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