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Product Specification
PE4237
Product Description
The PE4237 RF Switch is designed to cover a broad range of
applications from near DC to 4000 MHz. This reflective switch
integrates on-board CMOS control logic driven by a single-pin,
low voltage CMOS or TTL control input. Using a nominal +3-
volt power supply, a 1 dB compression point of +32 dBm can
be achieved. The PE4237 also exhibits outstanding isolation
of better than 43 dB at 1000 MHz and is
offered in a small 3x3 mm DFN package.
The PE4237 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
RFC
RF1
SPDT UltraCMOS? RF Switch
DC - 4000 MHz
Features
Single 3.0-volt power supply
Low insertion loss: 0.35 dB at
1000 MHz, 0.45 dB at 2000 MHz
High isolation of 43 dB at 1000 MHz,
35 dB at 2000 MHz
Typical 1 dB compression point of
+32 dBm
Single-pin CMOS or TTL logic control
Available in a 6-lead DFN package
Figure 2. Package Type
6-lead DFN
ESD
ESD
CMOS
Control
Driver
CTRL
Table 1. Electrical Specifications @ +25 °C, V DD = 3 V (ZS = ZL = 50 ? )
Parameter
Operation Frequency 1
Insertion Loss
Isolation – RFC to RF1/RF2
Isolation – RF1 to RF2
Return Loss
‘ON’ Switching Time
‘OFF’ Switching Time
Conditions
1000 MHz
2000 MHz
1000 MHz
2000 MHz
1000 MHz
2000 MHz
1000 MHz
2000 MHz
50% CTRL to 0.1 dB final value, 2 GHz
50% CTRL to 25 dB isolation, 2 GHz
Minimum
DC
41
33
33.5
26.5
19
10.5
Typical
0.35
0.45
43
35
35
28
24
14
200
90
Maximum
4000
0.50
0.60
Units
MHz
dB
dB
dB
dB
dB
dB
dB
dB
ns
ns
Video Feedthrough 2
15
mV pp
Input 1 dB Compression
Input IP3
2000 MHz
2000 MHz, 17 dBm
30
50
32
dBm
dBm
Notes: 1. Device linearity will begin to degrade below 10 MHz.
2. The DC transient at the output of any port of the switch when the control voltage is switched from Low to
High or High to Low in a 50 ? test set-up, measured with 1ns risetime pulses and 500 MHz bandwidth.
Document No. 70-0071-06 │ www.psemi.com
?2003-2009 Peregrine Semiconductor Corp. All rights reserved.
Page 1 of 8
Peregrine products are protected under one or more of the following U.S. Patents: http://patents.psemi.com
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