Product Specification
PE4257
Product Description
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 in Peregrine’s patented Ultra
Thin Silicon (UTSi®) CMOS process, offering the performance
of GaAs with the economy and integration of conventional
CMOS.
Figure 1. Functional Diagram
Figure 2. Package Type
RFC
50
Ω
SPDT Absorptive UltraCMOS™
DC – 3.0 GHz RF Switch
Features
•
50
Ω
characteristic impedance
•
Integrated 50
Ω
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
µA
4x4mm 20 Lead QFN
RF1
RF2
CMOS
Control
Driver
CTRL1 CTRL2
Table 1. Electrical Specifications @ +25 °C, V
DD
= 3.0 V
(Z
S
= Z
L
= 50
Ω)
Parameter
Operating Frequency
1
Insertion Loss
1000 MHz
2000 MHz
3000 MHz
1000 MHz
2000 MHz
3000 MHz
1000 MHz
2000 MHz
3000 MHz
5 MHz - 1000 MHz
5 MHz - 1000 MHz
1000 MHz
50% CTRL to 10 / 90 RF
5 MHz - 1000 MHz
50
29
61
46
40
57
54
42
Condition
Minimum
DC
Typical
0.75
0.95
1.2
64
50
44
63
60
48
80
55
31
2
Maximum
3000
0.95
1.15
1.4
Units
MHz
dB
Isolation Input to Output
dB
Isolation Output to Output
Input IP2
Input IP3
Input 1dB Compression
2
Switching Time
Video Feedthrough
3
dB
dBm
dBm
dBm
µs
15
mV
pp
Notes: 1. Device linearity will begin to degrade below 1 MHz.
2. Note Absolute Maximum ratings in Table 3.
3. Measured with a 1 ns risetime, 0/3 V pulse and 500 MHz bandwidth
Document No. 70-0166-02
│
www.psemi.com
©2005 Peregrine Semiconductor Corp. All rights reserved.
Page 1 of 7
PEREGRINE [ PEREGRINE SEMICONDUCTOR CORP. ]
