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參數(shù)資料
| 型號： | TDA7439B |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | THREE BANDS DIGITALLY CONTROLLED AUDIO PROCESSOR |
| 中文描述： | 三頻段數(shù)字控制音頻處理器 |
| 文件頁數(shù)： | 4/19頁 |
| 文件大小： | 167K |
| 代理商： | TDA7439B |
TDA7439
4/19
Notes: 1. The device is functionally good at Vs = 5V. a step down, on Vs, to 4V does’t reset the device.
2. BASS, MIDDLE and TREBLE response: The center frequency and the response quality can be chosen by the external circuitry.
SPEAKER ATTENUATORS
C
RANGE
Control Range
70
76
82
dB
S
STEP
Step Resolution
0.5
1
1.5
dB
E
A
Attenuation Set Error
A
V
= 0 to -20dB
-1.5
0
1.5
dB
A
V
= -20 to -56dB
-2
0
2
dB
V
DC
DC Step
adjacent attenuation steps
0
3
mV
A
mute
Mute Attenuation
80
100
dB
AUDIO OUTPUTS
V
CLIP
Clipping Level
d = 0.3%
2.1
2.6
V
RMS
R
L
Output Load Resistance
2
K
R
O
Output Impedance
10
40
70
V
DC
DC Voltage Level
3.5
3.8
4.1
V
GENERAL
E
NO
Output Noise
All gains = 0dB;
BW = 20Hz to 20KHz flat
5
15
μ
V
E
t
Total Tracking Error
A
V
= 0 to -24dB
0
1
dB
A
V
= -24 to -47dB
0
2
dB
S/N
Signal to Noise Ratio
All gains 0dB; V
O
= 1V
RMS
;
95
106
dB
S
C
Channel Separation Left/Right
80
100
dB
d
Distortion
A
V
= 0; V
I
= 1V
RMS
;
0.01
0.08
%
BUS INPUT
V
IL
Input Low Voltage
1
V
V
IH
Input High Voltage
3
V
I
IN
Input Current
V
IN
= 0.4V
-5
0
5
μ
A
V
O
Output Voltage SDA Acknowledge
I
O
= 1.6mA
0.4
0.8
V
Table 5. Electrical Characteristcs
(continued)
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