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参数资料
| 型号： | TDA7400 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP44 |
| 封装： | 10 X 10 MM, TQFP-44 |
| 文件页数： | 27/28页 |
| 文件大小： | 274K |
| 代理商： | TDA7400 |
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ELECTRICAL CHARACTERISTICS (continued)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
Carrier and harmonic suppression at the output
α19
Pilot Signal f = 19KHz
40
50
dB
α38
Subcarrier f = 38KHz
75
dB
α57
Subcarrier f = 57KHz
62
dB
α76
Subcarrier f = 76KHz
90
dB
Intermodulation (Note 1)
α2fmod = 10KHz, fspur = 1KHz
65
dB
α3fmod = 13KHz, fspur = 1KHz
75
dB
Traffic Ratio (Note 2)
α57
Signal f = 57KHz
70
dB
SCA - Subsidiary Communications Authoorization (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
Notes to the characteristics:
1. Intermodulation Suppression:
α2 =
VO(signal)(at1KHz)
VO(spurious)(at1KHz)
; fs
= (2 x 10KHz) 19KHz
α3 =
VO(signal)(at1KHz)
VO(spurious)(at1KHz)
; fs
= (3 x 13KHz) 38KHz
measured with: 91% pilot signal; fm = 10kHz or 13kHz.
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%)
α57 (V.W>F.
) =
VO(signal)(at1KHz)
VO(spurious)(at1KHz + 23KHz)
3. SCA ( Subsidiary Communications Authorization ) measured with: 81% mono signal; 9% pilot signal; fm = 1kHz; 10%SCA - subcarrier
( fs = 67kHz, unmodulated ).
α67 =
VO(signal)(at1KHz)
VO(spurious)(at9KHz)
;
FS
= (2 x 38KHz) 67KHz
4. ACI ( Adjacent Channel Interference ):
α114 =
VO(signal)(at1KHz)
VO(spurious)(at4KHz)
; FS
= 110KHz
(3 x 38KHz)
α190 =
VO(signal)(at1KHz)
VO(spurious)(at4KHz)
; FS
= 186KHz
(5 x 38KHz)
measured with: 90% mono signal; 9% pilot signal; fm =1kHz; 1% spurious signal ( fs = 110kHz or 186kHz, unmodulated).
TDA7400
8/28
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