參數(shù)資料
型號： 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
文件頁數(shù)： 27/69頁
文件大?。?/td> 865K
代理商： TDA7402
TDA7402
Stereo decoder part
4.3
Notes about the characteristics
4.3.1
Intermodulation suppression
measured with: 91% pilot signal; fm = 10kHz or 13kHz.
4.3.2
Traffic radio (V.F.) suppression
measured with: 91% stereo signal; 9% pilot signal; fm=1kHz; 5% subcarrier
(f=57kHz, fm=23Hz AM, m=60%)
4.3.3
SCA (subsidiary communications authorization)
measured with: 81% mono signal; 9% pilot signal; fm=1kHz; 10%SCA - subcarrier
(f
S = 67kHz, unmodulated).
Intermodulation (Note 4.3.1)
α2f
mod=10kHz, fspur=1kHz
65
dB
α3f
mod=13kHz, fspur=1kHz
75
dB
Traffic Radio (Note 4.3.2)
α57
Signal f=57kHz
70
dB
SCA - Subsidiary Communications Authorization (Note 4.3.3)
α67
Signal f = 67kHz
75
dB
ACI - Adjacent Channel Interference (Note 4.3.4)
α114
Signal f=114kHz
95
dB
α190
Signal f=190kHz
84
dB
Table 7.
Stereo decoder electrical characteristics (continued)
Symbol
Parameter
Test condition
Min.
Typ.
Max.
Unit
α2
V
O signal
() at1kHz
()
V
O spurious
() at1kHz
()
--------------------------------------------------------------- f
s
;
210kHz
() 19kHz
–
==
α3
V
O signal
() at1kHz
()
V
O spurious
() at1kHz
()
--------------------------------------------------------------- f
s
;
313kHz
() 38kHz
–
==
α57 V.W.F
()
V
O signal
() at1kHz
()
V
O spurious
() at1kHz 23kHz
±
()
---------------------------------------------------------------------------------------
=
α67
V
O signal
() at1kHz
()
V
O spurious
() at1kHz
()
--------------------------------------------------------------- f
s
;
238kHz
() 67kHz
–
==
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