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參數(shù)資料
| 型號： | TDA7348 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 音頻控制 |
| 英文描述： | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDIP28 |
| 封裝： | DIP-28 |
| 文件頁數(shù)： | 9/14頁 |
| 文件大?。?/td> | 357K |
| 代理商： | TDA7348 |
ELECTRICAL CHARACTERISTICS (VS = 9V; RL = 10K
; Rg = 50; Tamb = 25°C; all controls flat
(G = 0.3dB step 0dB); f = 1KHz. Refer to the test circuit, unless otherwise specified.)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
INPUT SELECTOR
RI
Input Resistance
70
100
130
K
VCL
Clipping Level
d
≤ 0.3%
2.1
2.6
VRMS
SI
Input Separation
80
100
dB
RL
Output Load Resistance
2
K
GI MIN
Minimum Input Gain
-0.75
0
0.75
dB
GI MAX
Maximum Input Gain
10.25
11.25
12.25
dB
Gstep
Step Resolution
2.75
3.75
4.75
dB
eN
Input Noise
20Hz to 20 KHz unweighted
2.3
V
VDC
DC Steps
Adiacent Gain Steps
1.5
10
mV
GIMIN to GIMAX
3mV
VOLUME CONTROL (1 + 2)
RI
Input Resistance
35
50
K
GMAX
Maximum Gain
18.75
20
21.25
dB
AMAX
Maximum Attenuation
78.45
dB
ASTEPC
Step Resolution Coarse
Attenuation
0.51.252.0
dB
ASTEPF
Step Resolution Fine Attenuation
(Only Volume 1)
0.11
0.31
0.51
dB
EA
Attenuation Set Error
G = 20 to -20dB
-1.25
0
1.25
dB
G = -20 to -58dB
-3
2
dB
Et
Tracking Error
2dB
VDC
DC Steps
Adiacent Attenuation Steps
-3
0
3
mV
From 0dB to AMAX
0.5
5
mV
ZERO CROSSING MUTE
VTH
Zero Crossing Threshold
(note 1)
WIN = 11
20
mV
WIN = 10
40
mV
WIN = 01
80
mV
WIN = 00
160
mV
AMUTE
Mute Attenuation
80
100
dB
VDC
DC Step
0dB to Mute
0
3
mV
SOFT MUTE
AMUTE
Mute Attenuation
45
60
dB
TDON
ON Delay Time
CCSM = 22nF; 0 to -20dB; I = IMAX
0.7
1
1.7
ms
CCSM = 22nF; 0 to -20dB; I = IMIN
20
35
55
ms
TDOFF
OFF Current
VCSM = 0V; I = IMAX
25
50
75
A
VCSM = 0V; I = IMIN
1
A
VTHSM
Soft Mute Threshold
1.5
2.5
3.5
V
RINT
Pullup Resistor (pin 22)
(note 2)
35
50
65
K
VSMH
(pin 22) Level High
Soft Mute Active
3.5
V
VSML
(pin 22) Level Low
1
V
TDA7348
4/14
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