4270 Ver la hoja de datos (PDF) - Peregrine Semiconductor
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4270 Datasheet PDF : 8 Pages
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Product Description
The PE4270 is a is a high-isolation Switch designed for CATV
applications, covering a broad frequency range from near DC
up to 3000 MHz. This single-supply SPST switch offers a
single-pin CMOS control interface with industry leading CTB
performance. It also provides low insertion loss, high isolation
and extremely low bias requirements while operating on a
single 3-volt supply. In a typical CATV application, the PE4270
provides for a cost effective and manufacturable solution vs.
mechanical relays.
The PE4270 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.
Figure 1. Functional Diagram
RF1
RF2
Product Specification
PE4270
SPST CATV UltraCMOS™ Switch
DC - 3000 MHz
Features
• Integrated 0.25 watt terminations
• CTB performance of 90 dBc
• High isolation: 90 dB at 5 MHz, 63 dB
at 1000 MHz
• Low insertion loss: 0.5 dB at 50 MHz,
0.70 dB at 1000 MHz
• High input IP2: >80 dBm
• CMOS/TTL single-pin control
• Single +3-volt supply operation
• Extremely low bias: 8 µA @ 3 V
• Available in a 6-lead DFN package
Figure 2. Package Type
6-lead DFN
75
CMOS
75
Control
Driver
CTRL
Table 1. Electrical Specifications @ +25 °C (ZS = ZL = 75 Ω)
Parameter
Operating Frequency 1
Insertion Loss
Isolation
Return Loss
1 dB Compression 2,4
CTB / CSO
Input IP2 2
Input IP3 2
Video Feedthrough 3
Condition
DC – 50 MHz
1000 MHz
DC – 50 MHz
1000 MHz
5 - 1000 MHz,
VCNTL = 3.0V
1000 MHz
77 & 110 channels;
PO = 44 dBmV
1000 MHz
1000 MHz
Minimum
DC
85
60
15
28
80
50
Switching Time
Notes: 1. Device linearity will begin to degrade below 1 MHz.
2. Measured in a 50 Ω system.
3. Measured with a 1 ns risetime, 0/3 V pulse and 500 MHz bandwidth.
4. Note Absolute Maximum ratings in Table 3.
Document No. 70-0148-03 │ www.psemi.com
Typical
0.50
0.70
90
63
16
30
-90
2
Maximum
3000
0.65
0.85
15
Units
MHz
dB
dB
dB
dBm
dBc
dBm
dBm
mVpp
µS
©2005 Peregrine Semiconductor Corp. All rights reserved.
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