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參數(shù)資料
| 型號(hào)： | TDA7402 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP44 |
| 封裝： | 10 X 10 MM, 1.40 MM HEIGHT, TQFP-44 |
| 文件頁(yè)數(shù)： | 25/69頁(yè) |
| 文件大?。?/td> | 865K |
| 代理商： | TDA7402 |
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TDA7402
Stereo decoder part
4
Stereo decoder part
4.1
Stereo decoder part features
●
No external components necessary
●
PLL with adjustment free, fully integrated VCO
●
Automatic pilot dependent MONO/STEREO switching
●
Very high suppression of intermodulation and interference
●
Programmable roll off compensation
●
Dedicated RDS-Soft Mute
●
Highcut and stereo blend-characteristics programmable in a wide range
●
FM/AM noiseblanker with several threshold controls
●
Multipath-detector with programmable internal/external influence
●
I2C-bus control of all necessary functions
4.2
Stereo decoder electrical characteristics
VS = 9V, de-emphasis time constant = 50s, MPX input voltage VMPX = 500mV (75kHz
deviation), modulation frequency = 1kHz, input gain = 6dB, Tamb = 27°C, unless otherwise
specified.
Table 7.
Stereo decoder electrical characteristics
Symbol
Parameter
Test condition
Min.
Typ.
Max.
Unit
Vin
MPX input level
Input gain = 3.5dB
0.5
1.25
Vrms
Rin
Input resistance
70
100
130
k
Ω
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
55
dB
a
Max. channel separation
30
50
dB
THD
Total harmonic distortion
fin=1kHz, mono
0.02
0.3
%
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 = 0
10
19
25
mV
PLL
Δf/f
Capture range
0.5
%
N
S+ N
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