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TDA7402 bảng dữ liệu(PDF) 36 Page - STMicroelectronics

tên linh kiện TDA7402
Giải thích chi tiết về linh kiện  Car radio signal processor
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
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TDA7402 bảng dữ liệu(HTML) 36 Page - STMicroelectronics

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Stereo decoder part
TDA7402
36/71
5.3.4
ACI (adjacent channel interference)
measured with: 90% mono signal; 9% pilot signal; fm=1kHz; 1% spurious signal
( f
S = 110kHz or 186kHz, unmodulated).
5.4
Noise blanker part
5.4.1
Features:
●
AM and FM mode
●
internal 2nd order 140kHz high-pass filter for MPX path
●
internal rectifier and filters for AM-IF path
●
programmable trigger thresholds
●
trigger threshold dependent on high frequency noise with programmable gain
●
additional circuits for deviation and fieldstrength dependent trigger adjustment
●
4 selectable pulse suppression times for each mode
●
programmable noise rectifier charge/discharge current
All parameters measured in FM mode if not otherwise specified.
α114
V
O sign al
() at1kHz
()
V
O sp urio us
() at4kHz
()
---------------------------------------------------------------- f
s
;
110kHz
3 38kHz
⋅
()
–
==
α190
V
O sign al
() at1kHz
()
V
O sp urio us
() at4kHz
()
---------------------------------------------------------------- f
s
;
186kHz
5 38kHz
⋅
()
–
==
Table 8.
Electrical characteristics
Symbol
Parameter
Test condition
Min.
Typ.
Max.
Unit
V
TR
Trigger threshold (1)
meas.with
VPEAK=0.9V
111
30
mV
OP
110
35
mV
OP
101
40
mV
OP
100
45
mV
OP
011
50
mV
OP
010
55
mV
OP
001
60
mV
OP
000
65
mV
OP
V
TRNOISE
Noise controlled
Trigger threshold
meas.with
VPEAK=1.5V
00
260
mV
OP
01
220
mV
OP
10
180
mV
OP
11
140
mV
OP



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