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參數(shù)資料
| 型號(hào)： | TDA7434 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | BASIC FUNCTION AUDIO PROCESSOR |
| 中文描述： | 基本功能音頻處理器 |
| 文件頁(yè)數(shù)： | 4/10頁(yè) |
| 文件大?。?/td> | 88K |
| 代理商： | TDA7434 |
ELECTRICALCHARACTERISTICS
(T
amb
= 25
°
C, V
S
= 9V, R
L
= 10k
, R
g
= 50
,
all variable gains = 0dB, f = 1kHz, unlessotherwise specified.)
Symbol
INPUT SELECTOR
R
IN
V
CL
S
IN
A
MUTE
V
DC
MUTE AT AM INPUT (*)
V
IL
VOLUME CONTROL
G
MAX
A
MAX
A
step
E
A
Parameter
Test Condition
Min.
Typ.
Max.
Unit
Input Resistance
Clipping Level
Input Separation
Input Mute Attenuation
Mute DC Step
70
1.3
70
70
100
1.6
90
95
0.2
130
k
Vrms
dB
dB
mV
d
≤
0.3%
10
Input Low Voltage
AM not selected
0.4
V
Max. Gain
Max Attenuation
Step Resolution
Attenuation Set Error
Note 2
30.5
75
0.5
-1
-2
32
79
1
0
33.5
83
1.5
+1
2
2
4
dB
dB
dB
dB
dB
dB
mV
G = +20 to -20dB
G = -20 to -60dB
G = +20 to -60dB
Adjacent Attenuation Steps,
Range from 0 to -79dB
From 0dB to -79dB
E
T
V
DC
Tracking Error
DC Steps
0.1
0.5
10
mV
LOUDNESS CONTROL
A
MAX
A
step
R
LOUD
BASS CONTROL
B
RANGE
B
CUT
A
Step
R
B
TREBLE CONTROL
C
RANGE
A
step
SPEAKER ATTENUATORS
C
RANGE
Control Range
A
step
Step Resolution
A
MUTE
Output Mute Attenuation
E
A
Attenuation Set Error
V
DC
DC Steps
AUDIO OUTPUTS
V
CLIP
Clipping Level
G
OUT
Output Gain(fixed)
R
L
Output Load Resistance
Step Resolution
Internal Resistor
14
0.5
37
15
1
50
16
1.5
63
dB
dB
k
Max. Bass boost
Max. Bass cut
Step Resolution
Internal Feedback Resistance
15.5
-20
1
48
+18
-18
2
65
20
dB
dB
dB
k
-15.5
3
82
Control Range
Step Resolution
±
13
1
±
14
2
±
15
3
dB
dB
36
0.5
70
37.5
1
90
39
1.5
dB
dB
dB
dB
mV
From 0 to -24dB
From 0 to -24dB
Adjacent Attenuation Steps
1
4
0.1
d = 0.3%
2
2.5
4
Vrms
dB
k
3.5
3
5
4.5
AC - connected
DC connected to GND
C
L
R
OUT
V
DC
Output Load Capacitance
Output Impedance
DC Voltage Level
10
100
4.3
nF
V
30
4.0
3.7
(*) The mute function can be activated without using the I2C bus by grounding the AM input whenAM is not selected. This causes the input
multiplexer to select the reference voltage instead of an input signal.
TDA7434
4/10
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