Product Specification
PE4235
SPDT UltraCMOS™ RF Switch
DC - 4000 MHz
Product Description
The PE4235 RF Switch is designed to cover a broad range of
applications from near DC to 4000 MHz. This single-supply
reflective switch integrates on-board CMOS control logic
driven by a simple, single-pin CMOS or TTL control input.
Using a nominal +3-volt power supply, a 1 dB compression
point of +15 dBm can be achieved. The PE4235 also exhibits
outstanding isolation of better than 40 dB at 1000 MHz and is
offered in a small 3x3 mm DFN package.
Features
• Single 3.0-volt power supply
• Low insertion loss: 0.40 dB at
1000 MHz, 0.45 dB at 2000 MHz
• High isolation of 40 dB at 1000 MHz,
30 dB at 2000 MHz
• Typical 1 dB compression point of
+15 dBm
The PE4235 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.
• Single-pin CMOS or TTL logic control
• Available in a 6-lead DFN package
Figure 1. Functional Diagram
Figure 2. Package Type
6-lead DFN
RFC
RF1
RF2
CMOS
Control
Driver
CTRL
Table 1. Electrical Specifications @ +25 °C, VDD = 3 V (ZS = ZL = 50 Ω)
Parameter
Conditions
Minimum
Typical
Maximum
Units
Operating Frequency1
DC
4000
MHz
1000 MHz
2000 MHz
0.40
0.45
0.50
0.60
dB
dB
Insertion Loss
1000 MHz
2000 MHz
39
29
40
30
dB
dB
Isolation – RFC to RF1/RF2
Isolation – RF1 to RF2
Return Loss
1000 MHz
2000 MHz
36
28
37
29
dB
dB
1000 MHz
2000 MHz
20
17
22
19
dB
dB
CTRL to 0.1 dB final value, 2 GHz
CTRL to 25 dB isolation, 2 GHz
200
90
ns
‘ON’ Switching Time
‘OFF’ Switching Time
Video Feedthrough2
Input 1 dB Compression
Input IP3
ns
2.5
15
mVpp
dBm
dBm
2000 MHz
13.5
32.5
2000 MHz, 5 dBm
36
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 Ω test set-up, measured with 1ns risetime pulses and 500 MHz bandwidth.
Document No. 70-0069-03 │ www.psemi.com
©2005 Peregrine Semiconductor Corp. All rights reserved.
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