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參數(shù)資料
| 型號： | 4257-51 |
| 廠商： | PEREGRINE SEMICONDUCTOR CORP |
| 元件分類： | 開關(guān) |
| 英文描述： | 50 ?SPDT Absorptive UltraCMOS?DC ?3.0 GHz RF Switch |
| 中文描述： | 0 MHz - 3000 MHz RF/MICROWAVE SGL POLE DOUBLE THROW SWITCH, 1.4 dB INSERTION LOSS |
| 封裝： | 4 X 4 MM, GREEN, QFN-20 |
| 文件頁數(shù)： | 1/7頁 |
| 文件大小： | 298K |
| 代理商： | 4257-51 |
Page 1 of 7
2004-2009 Peregrine Semiconductor Corp. All rights reserved.
Document No. 70-0166-06
│ www.psemi.com
20-Lead 4x4 mm QFN
The PE4257 is a high-isolation UltraCMOS Switch designed
for wireless applications, covering a broad frequency range
from near DC up to 3000 MHz. This single-supply SPDT
switch integrates a two-pin CMOS control interface. It also
provides low insertion loss with extremely low bias
requirements while operating on a single 3-volt supply. In a
typical wireless application, the PE4257 provides
unprecedented isolation and integration.
The PE4257 is manufactured on Peregrine’s UltraCMOS
process, a patented variation of silicon-on-insulator (SOI)
technology on a sapphire substrate, offering the performance
of GaAs with the economy and integration of conventional
CMOS.
Product Specification
50
SPDT Absorptive UltraCMOS
DC – 3.0 GHz RF Switch
Product Description
Figure 1. Functional Diagram
PE4257
Features
50 characteristic impedance
Integrated 50 0.25 watt terminations
High input IP3 > +55 dBm
High isolation 64 dB at 1000 MHz
Low insertion loss: typically 0.75 dB
at 1000 MHz and 0.95 dB at 2000 MHz
LV CMOS two-pin control
Single +3 volt supply operation
Low current consumption: 8 A
Parameter
Condition
Minimum
Typical
Maximum
Units
Operating Frequency1
DC
3000
MHz
Insertion Loss
1000 MHz
2000 MHz
3000 MHz
0.75
0.95
1.2
0.95
1.15
1.4
dB
Isolation Input to Output
1000 MHz
2000 MHz
3000 MHz
61
46
40
64
50
44
dB
Isolation Output to Output
1000 MHz
2000 MHz
3000 MHz
57
54
42
63
60
48
dB
Input IP2
5 MHz - 1000 MHz
80
dBm
Input IP3
5 MHz - 1000 MHz
50
55
dBm
Input 1dB Compression2
1000 MHz
29
31
dBm
Switching Time
50% CTRL to 10 / 90 RF
2
s
Video Feedthrough3
5 MHz - 1000 MHz
15
mVpp
Notes: 1. Device linearity will begin to degrade below 5 MHz.
2. Note Absolute Maximum ratings in Table 3.
3. Measured with a 1 ns risetime, 0/3 V pulse and 500 MHz bandwidth
Figure 2. Package Type
Table 1. Electrical Specifications @ +25 °C, VDD = 3.0 V (ZS = ZL = 50 )
RF1
RF2
50
50
CMOS
Control
Driver
ESD
50
RFC
CTRL CTRL2
ES
D
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