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參數(shù)資料
| 型號： | FX118 |
| 英文描述： | Frequency Inverter? |
| 中文描述： | 變頻器？ |
| 文件頁數(shù)： | 4/7頁 |
| 文件大?。?/td> | 114K |
| 代理商： | FX118 |
4
0.1
0.2
0.3
0.5
2.0
1.0
7.0
Frequency kHz
3.0
-40
-30
-20
-10
-3
0
+5
Gain
dB
Audio Input Level = 275mVrms
V = 3.75V
Fig.4 Typical Audio Frequency Response of a Single Scrambled or De-scrambled Channel
0
Lowpass Filtered Voiceband
for Input to
Balanced Modulator
1000Hz
2000Hz
3000Hz
0
Carrier Frequency (3300Hz)
Generated On-Chip for Input to
Balanced Modulator
1000
2000
3000
0
Bandpass Filtered Voiceband
Presented at the Ouput
after Mixing with the Carrier Frequency
in the Balanced Modulator
1000
2000
3000
Speech Band
Input Voiceband Frequencies
3300
A
B
C
D
A
B
C
D
(1)
(2)
(3)
(4)
How the Inverter Works
Carrier Frequency minus Input Voice Frequency equals Scrambled Voice Frequency
System Gains
When calculating the external components for the operation of the FX118 the following points should be considered:
(a)
The Input Lowpass Filter has a (typical) gain of 0.5dB.
(b)
The Balanced Modulator has a (typical) attenuation of 4.0dB.
(c)
The Output Bandpass Filter has a (typical) gain of 4.5dB.
Application Information ......
Fig.5 A Pictorial Explanation of the FX118 “Scramble Operation”
相關PDF資料 |
PDF描述 |
|---|---|
| FX118D4 | Analog Miscellaneous |
| FX118DW | Telecommunication IC |
| FX118P | Telecommunication IC |
| FX118P3 | Analog Miscellaneous |
| FX2030 | Selcall Encoder/Decoder Hybrid |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| FX118D4 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog Miscellaneous |
| FX118DW | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
| FX118P | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
| FX118P3 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog Miscellaneous |
| FX1-192P-1.27DSA | 功能描述:CONN HEADER 192POS 1.27MM STR AU RoHS:否 類別:連接器，互連式 >> 板對板 - 陣列，邊緣類型，包廂 系列:FX1 標準包裝:3,000 系列:SlimStack™ 502396 連接器類型:插頭，外罩觸點 位置數(shù):100 間距:0.016"（0.40mm） 行數(shù):2 安裝類型:表面貼裝 特點:固定焊尾 觸點表面涂層:金 觸點涂層厚度:8µin（0.20µm） 包裝:帶卷 (TR) 配接層疊高度:2.5mm 板上方高度:0.084"（2.13mm） 其它名稱:502396-1010 |
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