Product Specification
PE4256
Product Description
The PE4256 is an
UltraCMOS™
Switch designed for CATV
applications, covering a broad frequency range from 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 CATV application, the PE4256
provides for a cost effective and manufacturable solution when
compared to mechanical relays.
The PE4256 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
RFC
75
Ω
SPDT CATV UltraCMOS™ Switch
DC - 3.0 GHz
Features
•
75
Ω
characteristic impedance
•
Integrated 75
Ω
0.25 watt terminations
•
CTB performance of -90 dBc
•
High isolation 65 dB at 1000 MHz
•
Low insertion loss: typically 0.5 dB at
5 MHz, 0.9 dB at 1000 MHz
•
High input IP3: >50 dBm
•
CMOS two-pin control
•
Single +3 volt supply operation
•
Low current consumption: 8
µA
•
Unique all off terminated mode
•
4x4 mm QFN package
Figure 2. Package Type
20-lead 4x4 mm QFN
75
RF1
RF2
75
CMOS
Control
Driver
75
C1
C2
Table 1. Electrical Specifications @ +25 °C, V
DD
= +3 V
(Z
S
= Z
L
= 75
Ω)
Parameter
Operating Frequency
1
Insertion Loss
5 MHz – 250 MHz
250 MHz – 750 MHz
750 MHz – 1000 MHz
1000 MHz – 2200 MHz
5 MHz – 250 MHz
250 MHz – 750 MHz
750 MHz – 1000 MHz
1000 MHz – 2200 MHz
5 MHz - 1000 MHz
5 MHz - 1000 MHz
1000 MHz
77 & 110 channels;
Power Out = 44 dBmV
50% CTRL to 10/90% RF
5 MHz - 1000 MHz
50
29
75
65
62
49
Condition
Minimum
DC
Typical
0.5
0.8
0.9
1.1
80
70
65
52
80
55
31
-90
2
Maximum
3000
0.6
0.95
1.1
1.3
Units
MHz
dB
Isolation
Input IP2
2
Input IP3
2
Input 1dB Compression
2
CTB / CSO
Switching Time
Video Feedthrough
3
Notes:
dB
dBm
dBm
dBm
dBc
µs
15
mV
pp
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
©2005 Peregrine Semiconductor Corp. All rights reserved.
Page 1 of 8
Document No. 70-0144-01
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