參數(shù)資料
型號(hào): TDA7405
廠商: STMICROELECTRONICS
元件分類: 音頻控制
英文描述: 2 CHANNEL(S), TONE CONTROL CIRCUIT, PQFP44
封裝: 10 X 10 MM, 1.40 MM HEIGHT, TQFP-44
文件頁(yè)數(shù): 18/57頁(yè)
文件大?。?/td> 750K
代理商: TDA7405
Obsolete
Product(s)
- Obsolete
Product(s)
25/57
TDA7405
7
NOTES TO THE CHARACTERISTICS
Note 1. Intermodulation Suppression
measured with: 91% pilot signal; fm = 10 kHz or 13 kHz.
Note 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%)
Note 3. SCA ( Subsidiary Communications Authorization )
measured with: 81% mono signal; 9% pilot signal; fm=1kHz; 10%SCA - subcarrier ( fs = 67kHz, unmodulated ).
α2fmod=10kHz, fspur=1kHz
65
dB
α3fmod=13kHz, fspur=1kHz
75
dB
Traffic Radio (Note 2)
α57
Signal f=57kHz
70
dB
SCA - Subsidiary Communications Authorization (Note 3)
α67
Signal f=67kHz
75
dB
ACI - Adjacent Channel Interference (Note 4)
α114
Signal f=114kHz
95
dB
α190
Signal f=190kHz
84
dB
Table 7. ELECTRICAL CHARACTERISTICS (continued)
VS = 9V, deemphasis time constant = 50s, MPX input voltage VMPX = 500mV (75kHz deviation),
modulation frequency = 1kHz, input gain = 6dB, Tamb = 27°C, unless otherwise specified.
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
α2
V
o s i gna l
() at1kHz
()
V
o s pur io u s
() at1kHz
()
----------------------------------------------------------------
s
;
210kHz
() 19kHz
==
α3
V
o s i gna l
() at1kHz
()
V
o s pur io u s
() at1kHz
()
----------------------------------------------------------------
s
;
313kHz
() 38kHz
==
α57 V.W.F.
()
V
o s ig nal
() at1kHz
()
V
o s p uri ous
() at1kHz±23kHz
()
-------------------------------------------------------------------------------------
=
α67
V
o s i gn al
() at1kHz
()
V
o sp u r io u s
() at9kHz
()
----------------------------------------------------------------
s
;
338kHz
() 67kHz
==
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