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參數資料
| 型號： | U2305B |
| 英文描述： | VHF/ UHF-Tuner-IC |
| 中文描述： | 甚高頻/超高頻調諧器集成電路 |
| 文件頁數： | 6/8頁 |
| 文件大?。?/td> | 200K |
| 代理商： | U2305B |
U2305B
TELEFUNKEN Semiconductors
Rev. A1, 10-Sep-96
6 (8)
Preliminary Information
Input Impedance Mixer Band A (S11A), B and C (S11B/C)
–0.2j
–0.5j
–j
–2j
0
0.2j
0.5j
j
2j
5j
áá
áá
áá
áá
á
á
á
á
95 9928
áááá
áááá
45 MHz
áááá
ááá
ááá
445 MHz
ááá
645 MHz
ááá
845 MHz
ááá
1045 MHz
ááá
ááá
áááá
áááá
áááá
500 MHz
áááá
750 MHz
2
1
Z
0
= 50
Figure 4.
Input impedance mixer band A (S11A), B and C (S11B/C)
1)
VHF-low
Normalised to 50 , measuring range 45 MHz to 750 MHz.
2)
VHF-high and UHF
Normalised to 50 , measuring range 45 MHz to 1045 MHz. Both inputs are driven symmetrical.
The output impedance of hybrid is 100 ,the measured levels are then calculated in reference to 50 .
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