參數(shù)資料
型號(hào): TDA7440D
廠商: STMICROELECTRONICS
元件分類: 音頻控制
英文描述: 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO28
封裝: SO-28
文件頁數(shù): 12/17頁
文件大小: 735K
代理商: TDA7440D
TDA7440
4/17
Figure 4. Test Circuit
AUDIO OUTPUTS
VCLIP
Clipping Level
d = 0.3%
2.1
2.6
Vrms
RL
Output Load Resistance
2
K
RO
Output Impedance
10
30
50
VDC
DC Voltage Level
3.5
3.8
4.1
V
GENERAL
ENO
Output Noise
All gains = 0dB;
5
15
V
BW = 20Hz to 20KHz flat
Et
Total Tracking Error
AV = 0 to -24dB
0
1
dB
AV = -24 to -47dB
0
2
dB
S/N
Signal to Noise Ratio
All gains 0dB; VO = 1Vrms
95
106
dB
SC
Channel Separation Left/Right
80
100
dB
dDistortion
AV = 0; VI = 1Vrms
0.01
0.08
%
BUS INPUT
VIL
Input Low Voltage
1V
VIH
Input High Voltage
3
V
IIN
Input Current
VIN = 0.4V
-5
0
5
A
VO
Output Voltage SDA
Acknowledge
IO = 1.6mA
0.4
0.8
V
Table 5. Electrical Characteristcs (continued)
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
10
F
5.6nF
100nF
5.6K
2.2
F
5.6nF
2.2
F
100nF
5.6K
0.47
F
0.47
F
0.47
F
0.47
F
0.47
F
0.47
F
0.47
F
0.47
F
0/30dB
2dB STEP
MUXOUTL
INL
VOLUME
TREBLE
TREBLE(L)
MUXOUTR
INR
TREBLE(R)
BOUT(L)
SPKR ATT
LEFT
LOUT
SCL
SDA
DIG_GND
ROUT
D98AU885
I
2CBUS DECODER + LATCHES
100K
G
L-IN1
L-IN2
L-IN3
L-IN4
100K
R-IN1
R-IN2
R-IN3
R-IN4
G
INPUT MULTIPLEXER
+ GAIN
BASS
BIN(L)
BASS
SPKR ATT
RIGHT
BOUT(R)
BIN(R)
SUPPLY
CREF
AGND
VS
27
4
5
6
7
3
2
1
28
21
22
20
26
24
25
10
11
19
12
13
23
8
9
18
14
15
RB
VREF
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