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參數(shù)資料
| 型號(hào)： | RF2421 |
| 廠商： | RF MICRO DEVICES INC |
| 元件分類： | 衰減器 |
| 英文描述： | 10dB SWITCHED ATTENUATOR |
| 中文描述： | 500 MHz - 3000 MHz RF/MICROWAVE VARIABLE ATTENUATOR, 10.5 dB INSERTION LOSS-MAX |
| 封裝： | SOIC-8 |
| 文件頁數(shù)： | 3/4頁 |
| 文件大?。?/td> | 40K |
| 代理商： | RF2421 |
9-17
RF2421
Rev A6 001102
9
A
S
Evaluation Board S chematic
(Download Bill of Materials from www.rfmd.com.)
Pin
1
2
Function
NC
RF IN
Description
Not internally connected. This pin can be grounded.
Interface Schematic
RF Input. This pin is not DC blocked, and an external blocking capacitor
is recommended. The value depends on the frequency used.
3
GND
Ground connection. Keep trace physically short and connect immedi-
ately to the ground plane for best performance.
RF Output. This pin is not DC blocked, and an external blocking capac-
itor is recommended. The value depends on the frequency used.
Not internally connected. This pin can be grounded.
4
RF OUT
See pin 2.
5
6
7
NC
VDD
G10
Power supply pin. An external RF bypass capacitor is recommended.
Control pin for the 10dB attenuator. This pin has an internal pull-down
resistor, so when the pin is not connected the attenuator will be turned
off.
8
NC
Not internally connected. This pin can be grounded.
RF IN
RF OUT
G10
1
2
3
4
8
7
6
5
C1
100 pF
C2
100 nF
P1-1
P1-3
C3
100 pF
C4
100 pF
50
μ
strip
RF IN
J1
RF OUT
J2
50
μ
strip
P1-1
P1-3
P1
ATTN
GND
VDD
1
2
3
2421400 Rev A
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| RF2421PCBA | 制造商:RFMD 制造商全稱:RF Micro Devices 功能描述:10dB SWITCHED ATTENUATOR |
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| RF2422PCBA | 制造商:RFMD 制造商全稱:RF Micro Devices 功能描述:2.5GHZ DIRECT QUADRATURE MODULATOR |
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