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参数资料
| 型号： | TDA7420 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| 封装： | 14 X 14 MM, TQFP-64 |
| 文件页数： | 24/29页 |
| 文件大小： | 230K |
| 代理商： | TDA7420 |
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ELECTRICAL CHARACTERISTICS (VS = 8.5V; Tamb =25
°C; RL = 10K; all gains = 0dB; f = 1KHz;
unless otherwise specified, refer to the Test Circuit.)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
INPUT SECTION
Differential Input Pins 52, 53, 54, 55
RI
Input Resistance
37
50
63
K
VCL
Clipping Level
THD = 0.3%
2.0
2.5
Vrms
CMRR
Common Mode Rejection Ratio
45
55
dB
GDIFF
Differential Gain
-1
0
1
dB
Stereo Input Pins 56, 57
RI
Input Resistance
75
100
125
K
VCL
Clipping Level
2.0
2.5
Vrms
Quasi Differential Input Pins 58, 59,60
RI
Input Resistance
18
25
32
K
VCL
Clipping Level
2.0
2.5
Vrms
Composite Input Pin 61
RI
Input Resistance
18
25
32
K
VCL
Clipping Level
2.0
2.5
Vrms
MULTIPLEXER
RO
Output Resistance (pin 2,3)
100
200
300
GIMIN
Minimum Gain
-1
0
1
dB
GIMAX
Maximum Gain
14
15
16
dB
GSTEP
Step Resolution
0.5
1
1.5
dB
VDC
Dc Steps
Adjacent Gain Step
-5
1
5
mV
GMIN to GMAX
2mV
VOLUME CONTROL
RI
Input Resistance (1, 64)
24
33
42
K
CMAX
Max Gain
15
16
17
dB
AMAX
Max Attenuation
63
dB
ASTEPC
Step Resolution Coarse
Attenuation
AV = 16 to -40dB
0.5
1.0
1.5
dB
EA
Attenuation Set Error
G =16 to -40dB
-1.5
0
1.5
dB
ET
Tracking Error
2dB
VDC
DC Steps
Adjacent Attenuation Steps
-3
0.1
3
mV
from 0dB to AMAX
0.5
5
mV
SOFT MUTE
AMUTE
Mute Attenuation
40
50
dB
tD
Delay Time
CEXT = 22nF;
I = IMAX
0 to -20dB;
I = IMIN
1.0
ms
23
ms
BASS CONTROL
CRANGE
Control Range
+15
+18
+20
dB
ASTEP
Step Resolution
0.5
1
1.5
dB
RB
Internal Feedback Resistance
48
65
82
K
TDA7420
4/29
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