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參數(shù)資料
| 型號(hào)： | TDA7400D |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO28 |
| 封裝： | SOP-28 |
| 文件頁(yè)數(shù)： | 26/28頁(yè) |
| 文件大?。?/td> | 277K |
| 代理商： | TDA7400D |
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ELECTRICAL CHARACTERISTICS (VS = 9V; deemphasis time constant = 50
s,
VMPX = 500mV(75KHz deviation), fm= 1KHz, Gv = 6dB, Tamb = 27°C; unless otherwise specified).
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
Vin
MPX Input Level
Gv = 3.5dB
0.5
1.25
VRMS
Rin
Input Resistance
70
100
130
K
GMIN
Min. Input Gain
1.5
3.5
4.5
dB
GMAX
Max. Input Gain
8.5
11
12.5
dB
GSTEP
Step Resolution
1.75
2.5
3.25
dB
SVRR
Supply Voltage Ripple
Rejection
Vripple = 100mV; f = 1KHz
35
60
dB
α
Max. channel Separation
30
50
dB
THD
Total Harmonic Distortion
0.02
0.3
%
S
+N
N
Signal plus Noise to Noise
Ratio
A-weighted, S = 2Vrms
80
91
dB
MONO/STEREO-SWITCH
VPTHST1
Pilot Threshold Voltage
for Stereo, PTH = 1
10
15
25
mV
VPTHST0
Pilot Threshold Voltage
for Stereo, PTH = 0
15
25
35
mV
VPTHMO1
Pilot Threshold Voltage
for Mono, PTH = 1
7
12
17
mV
VPTHMO0
Pilot Threshold Voltage
for Mono, PTH = 1
10
19
25
mV
PLL
f/f
Capture Range
0.5
%
DEEMPHASIS and HIGHCUT
τHC50
Deemphasis Time Constant
Bit 7, Subadr, 10 = 0,
VLEVEL >> VHCH
25
50
75
s
τHC75
Deemphasis Time Constant
Bit 7, Subadr, 10 = 1,
VLEVEL >> VHCH
50
75
100
s
τHC50
Highcut Time Constant
Bit 7, Subadr, 10 = 0,
VLEVEL >> VHCL
100
150
200
s
τHC75
Highcut Time Constant
Bit 7, Subadr, 10 = 1,
VLEVEL >> VHCL
150
225
300
s
STEREOBLEND-and HIGHCUT-CONTROL
REF5V
Internal Reference Voltage
4.7
5
5.3
V
TCREF5V
Temperature Coefficient
3300
ppm
LGmin
Min. LEVEL Gain
-1
0
1
dB
LGmax
Max. LEVEL Gain
8
10
12
dB
LGstep
LEVEL Gain Step Resolution
0.3
0.67
1
dB
VSBLmin
Min. Voltage for Mono
25
29
33
%REF5V
VSBLmax
Min. Voltage for Mono
54
58
62
%REF5V
VSBLstep
Step Resolution
2.2
4.2
6.2
%REF5V
VHCHmin
Min. Voltage for NO Highcut
38
42
46
%REF5V
VHCHmax
Min. Voltage for NO Highcut
62
66
70
%REF5V
VHCHstep
Step Resolution
5
8.4
12
%REF5V
VHCLmin
Min. Voltage for FULL Highcut
12
17
22
%VHCH
VHCLmax
Max. Voltage for FULL Highcut
28
33
38
%VHCH
VHCLstep
Step Resolution
2.2
4.2
6.2
%VHCH
Stereodecoder Part
TDA7400D
7/28
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