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PDF PE4245 Data sheet ( Hoja de datos )
| Número de pieza | PE4245 | |
| Descripción | SPDT UltraCMOS RF Switch DC | |
| Fabricantes | Peregrine Semiconductor | |
| Logotipo |  |
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Product Description
The PE4245 RF Switch is designed to cover a broad range of
applications from near DC to 4000 MHz. This switch integrates
on-board CMOS control logic with a low voltage CMOS
compatible control input. Using a +3-volt nominal power
supply voltage, a 1 dB compression point of +27 dBm can be
achieved. The PE4245 also exhibits excellent isolation of
better than 42 dB at 1000 MHz and is offered in a small 3x3
mm DFN package.
The PE4245 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
Product Specification
PE4245
SPDT UltraCMOS™ RF Switch
DC - 4000 MHz
Features
• Single 3.0 V Power Supply
• Low insertion loss: 0.6 dB at 1000 MHz,
0.7 dB at 2000 MHz
• High isolation of 42 dB at 1000 MHz,
32 dB at 2000 MHz
• Typical 1 dB compression of +27 dBm
• Single-pin CMOS logic control
• Available in a 6-lead DFN package
Figure 2. Package Type
6-lead DFN
RF1 RF2
CMOS
Control
Driver
CTRL
Table 1. Electrical Specifications @ +25 °C, VDD = 3 V (ZS = ZL = 50 Ω)
Parameter
Operation Frequency1
Insertion Loss
Isolation – RFC to RF1/RF2
Isolation – RF1 to RF2
Return Loss
‘ON’ Switching Time
‘OFF’ Switching Time
Video Feedthrough2
Input 1 dB Compression
Input IP3
Conditions
1000 MHz
2000 MHz
1000 MHz
2000 MHz
1000 MHz
2000 MHz
1000 MHz
2000 MHz
CTRL to 0.1 dB final value, 2 GHz
CTRL to 25 dB isolation, 2 GHz
2000 MHz
2000 MHz, 14 dBm
Minimum
DC
39
30
34
27
21
20
26
43
Typical
0.6
0.7
42
32
36
29
23
22
200
90
15
27
45
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.
Maximum
4000
0.75
0.85
Units
MHz
dB
dB
dB
dB
dB
dB
dB
dB
ns
ns
mVpp
dBm
dBm
Document No. 70-0104-04 │ www.psemi.com
©2005 Peregrine Semiconductor Corp. All rights reserved.
Page 1 of 8
1 page  
PE4245
Product Specification
Evaluation Kit
The SPDT Switch Evaluation Kit board was
designed to ease customer evaluation of the
PE4245 SPDT switch. The RF common port is
connected through a 50 Ω transmission line to the
top left SMA connector, J1. Port 1 and Port 2 are
connected through 50 Ω transmission lines to the
top two SMA connectors on the right side of the
board, J2 and J3. A through transmission line
connects SMA connectors J4 and J5. This
transmission line can be used to estimate the loss
of the PCB over the environmental conditions
being evaluated.
The board is constructed of a two metal layer FR4
material with a total thickness of 0.031”. The
bottom layer provides ground for the RF
transmission lines. The transmission lines were
designed using a coplanar waveguide with ground
plane model using a trace width of 0.0476”, trace
gaps of 0.030”, dielectric thickness of 0.028”,
metal thickness of 0.0021” and εr of 4.4.
J6 provides a means for controlling DC and digital
inputs to the device. Starting from the lower left
pin, the second pin to the right (J6-3) is connected
to the device CNTL input. The fourth pin to the
right (J6-7) is connected to the device VDD input.
Figure 12. Evaluation Board Layouts
Peregrine Specification 101/0085
Figure 13. Evaluation Board Schematic
Peregrine Specification 102/0110
Document No. 70-0104-04 │ www.psemi.com
©2005 Peregrine Semiconductor Corp. All rights reserved.
Page 5 of 8
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet PE4245.PDF ] | |
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