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參數資料
| 型號： | FSD270(2) |
| 廠商： | Zetex Semiconductor |
| 文件頁數： | 3/5頁 |
| 文件大小： | 156K |
| 代理商： | FSD270(2) |
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 |
|---|---|
| FSD273 | SILICON LOW VOLTAGE HYPERABRUPT VARACTOR DIODES |
| FSD273(1) | |
| FSDH0165D | Fairchild Power Switch(FPS) |
| FSDH0165 | Fairchild Power Switch(FPS) |
| FSDH0170RNB | Green Mode Fairchild Power Switch (FPSTM) |
相關代理商/技術參數 |
參數描述 |
|---|---|
| FSD270TA | 功能描述:DIODE VARIABLE CAP CC SOT23-3 RoHS:是 類別:分離式半導體產品 >> 可變電容二極管（可變電容二極管，變容二極管） 系列:- 產品變化通告:Product Discontinuation 08/Dec/2009 標準包裝:3,000 系列:- 電容@ Vr, F:13.5pF @ 4.5V，1MHz 電容比:5.41 電容比條件:C1/C4.5 電壓 - 峰值反向(最大):12V 二極管類型:單一 在 Vr、F 時的 Q 值:- 安裝類型:表面貼裝 封裝/外殼:SC-79，SOD-523 供應商設備封裝:PG-SC79-2 包裝:帶卷 (TR) 其它名稱:SP000013483 |
| 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 |
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