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参数资料
| 型号： | AS221-306LF |
| 厂商： | SKYWORKS SOLUTIONS INC |
| 元件分类： | 开关 |
| 英文描述： | 100 MHz - 2500 MHz RF/MICROWAVE SGL POLE FOUR THROW SWITCH, 1.2 dB INSERTION LOSS |
| 封装： | 4 X 4 MM, ROHS COMPLIANT, PLASTIC, QFN-16 |
| 文件页数： | 2/4页 |
| 文件大小： | 718K |
| 代理商： | AS221-306LF |
Applications
The switching FET functions as a three port device, where
the source and drain ports form a conduction path or
channel for the RF signal and the gate port controls
whether the channel is opened or closed. A DC control
voltage applied to the gate is required to create this
function. Most switching FETs use a depletion mode
configuration, which means that the channel is normally
open (low resistance) with no voltage applied and a
negative voltage closes off the channel (high resistance).
A complete switch can be fabricated by arranging
switching FETs in various configurations depending upon
the end application. Shown below is a typical SP2T switch
comprised of series and shunt FETs. Capacitors are used
to level shift the switch to operate with positive control
voltage as shown in Figure 1.
Figure 1.0 SP2T Switch Schematic
Control
Voltage
2
Control
Voltage
1
RF
Common
(J1)
RF1
(J2)
RF2
(J3)
Q1
Q2
Q3
Q4
Transmit-Receive Switch
A SPDT switch can be used as a transmit-receive (Tx/Rx)
switch, to alternately connect a transmitter and a receiver
to a single antenna in a single duplex system.
Figure 2.0 Typical SP2T Tx/Rx Switch Application
LO
IF Output
Low
Noise
Amplifier
Downconverter
Mixer
SP2T
TR Switch
Power
Amplifier
Upconverter
Mixer
IF or BB Input
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AS221-306LF-B | 制造商:Skyworks Solutions Inc 功能描述:RF AND MICROWAVE SWITCH |
| AS2214 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Primary Side PWM Controller |
| AS2214N | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Primary Side PWM Controller |
| AS22150FLF | 制造商:TT Electronics / IRC 功能描述:AS22150FLF |
| AS22150HLF | 制造商:TT Electronics / IRC 功能描述:AS22150HLF |
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