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參數資料
| 型號： | FSD270TA |
| 廠商： | ZETEX PLC |
| 元件分類： | 參考電壓二極管 |
| 英文描述： | SILICON DUAL VARIABLE CAPACITANCE DIODE |
| 中文描述： | VHF-UHF BAND, 33 pF, 25 V, SILICON, HYPERABRUPT VARIABLE CAPACITANCE DIODE |
| 封裝： | SOT-23, 3 PIN |
| 文件頁數： | 3/5頁 |
| 文件大小： | 156K |
| 代理商： | FSD270TA |
APPLICATIONS INFORMATION
FSD270 in Digital Audio Broadcasting (DAB)
Circuits
Digital audio is set to dominate car radio and other
mobile radio applications. Most of the required
functions can be achieved with a single integrated
circuit. One parts of the circuit that are not integrated
are the Voltage Controlled Oscillator (VCO) used in the
Phase-Locked Loop (PLL) channel selection circuit and
the tracking filters. Figure 1 shows the FSD270 dual
variable capacitance diode (also known as varactor or
tuner diode) in a DAB application.
Most textbook circuits show a single variable
capacitance diode in place of the FSD270. In practice
radio frequency oscillations in the tracking filters can
drive the single diode into conduction on peaks
increasing the bias voltage and giving rise to
undesirable harmonics. Common-cathode variable
capacitancediodesareusedtoovercomethisproblem.
The FSD270 dual common cathode device in the space
saving SOT23 package has been optimized for this
application. Zetex application note AN9 covers our
range of variable capacitance diodes and their
applications in detail.
FSD270
ISSUE 1 - AUGUST 2002
3
Figure 1.
相關PDF資料 |
PDF描述 |
|---|---|
| FSD270(2) | |
| FSD273 | SILICON LOW VOLTAGE HYPERABRUPT VARACTOR DIODES |
| FSD273(1) | |
| FSDH0165D | Fairchild Power Switch(FPS) |
| FSDH0165 | Fairchild Power Switch(FPS) |
相關代理商/技術參數 |
參數描述 |
|---|---|
| FSD271TA | 功能描述:變容二極管 New Product RoHS:否 制造商:Skyworks Solutions, Inc. 電容:5.2 pF 反向電壓:10 V 正向連續電流:20 mA 端接類型:SMD/SMT 封裝 / 箱體:SC-79 封裝:Reel |
| FSD273 | 制造商:ZETEX 制造商全稱:ZETEX 功能描述:SILICON LOW VOLTAGE HYPERABRUPT VARACTOR DIODES |
| FSD273(1) | 制造商:ZETEX 制造商全稱:ZETEX 功能描述: |
| FSD273TA | 功能描述:變容二極管 Dual Tuner Diode RoHS:否 制造商:Skyworks Solutions, Inc. 電容:5.2 pF 反向電壓:10 V 正向連續電流:20 mA 端接類型:SMD/SMT 封裝 / 箱體:SC-79 封裝:Reel |
| FSD-3 | 制造商:MISCELLANEOUS 功能描述: |
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