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零件编号
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TDA7449L 查看數據表(PDF) - STMicroelectronics
零件编号
产品描述 (功能)
比赛名单
TDA7449L
LOW COST DIGITALLY CONTROLLED AUDIO PROCESSOR
STMicroelectronics
TDA7449L Datasheet PDF : 14 Pages
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TDA7449L
Table 5. Electrical Characteristcs
(continued)
AUDIO OUTPUTS
V
CLIP
Clipping Level
d = 0.3%
R
L
Output Load Resistance
R
O
Output Impedance
V
DC
DC Voltage Level
GENERAL
E
NO
Output Noise
All gains = 0dB;
BW = 20Hz to 20KHz flat
E
t
Total Tracking Error
A
V
= 0 to -24dB
A
V
= -24 to -47dB
S/N
Signal to Noise Ratio
All gains 0dB; V
O
= 1V
RMS
;
S
C
Channel Separation Left/Right
d
Distortion
A
V
= 0; V
I
= 1V
RMS
;
BUS INPUT
V
IL
Input Low Voltage
V
IH
Input High Voltage
I
IN
Input Current
V
IN
= 0.4V
V
O
Output Voltage SDA
Acknowledge
I
O
= 1.6mA
2.1 2.6
2
V
RMS
K
Ω
10
40
70
W
3.8
V
5
15
µ
V
0
1
dB
0
2
dB
106
dB
80
100
dB
0.01 0.08 %
1
V
3
V
-5
5
µ
A
0.4
0.8
V
Figure 4. Test Circuit
IN1L
J3
RCA
1
2
J4
3
4
5
CON3
GND
IN1L
GND
IN2L
GND
IN1R
J2
RCA
L-IN1 8
C3 0.47
µ
F
L-IN2 9
C4 0.47
µ
F
100K
100K
IN2R
1
GND
2
J1
IN1R
3
GND
4
CON
R-IN2 6
C1 0.47
µ
F
R-IN1 7
C2 0.47
µ
F
100K
100K
MOUTL
1
GND
2
J5
MOUTR
3
GND
4
CON4
J5
MUXOUTL
10
C9
5.6nF
R2 2K
150nF
330nF
TREBLE(L)
16
C7 C8
BIN(L)
15
BOUT(L)
14
R
B
5
LOUT
G
VOLUME
TREBLE
BASS
SPKR ATT
LEFT
J8
OUT_R
J9
OUT_L
1
OUT_L
2
J10
3
OUT_ R
4
CON4
0/30dB
2dB STEP
I
2
CBUS DECODER + LATCHES
18 DIG_GND
19 SCL
20 SDA
+9 V
JP1
JUMPER
1
2
J6
3
4
CON4
G
VOLUME
TREBLE
INPUT MULTIPLEXER
+ GAIN
11
MUXOUTR
17
TREBLE(R)
BASS
SPKR ATT
RIGHT
V
REF
SUPPLY
R
B
12
13
BOUT(R)
C5 C6
1
CREF
4
ROUT
3
R3 30
2 AGND
V
S
C13
100nF
C12
22
µ
F
1
+V8
J7
2
GND
+9V
CON2
C10
5.6nF
150nF 330nF
R1 2K
C11
10
µ
F
D98AU849A
4/14
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