Data
sheet
www.bookham.com
Thinking RF solutions
GaAs MMIC SP4T
Reflective Switch,
DC - 2GHz
The P35-4250-3 is a high performance Gallium Arsenide
single pole four throw broadband RF switch. It is suitable for
use in broadband communications and instrumentation
applications. A short circuit reflective termination is presented
at the isolated outputs of the switch. Control is effected by
the application of complimentary 0V and -5V levels to the
control lines in accordance with the truth table below.
This die is fabricated using Bookham's 0.5mm gate length
MESFET process (S20) and is fully protected using Silicon
Nitride passivation for excellent performance and
reliability. This device is packaged in a low-cost surface-
mount plastic package.
Features
Broadband performance
Low insertion loss;
0.7dB typ at 1GHz
Ultra low DC power consumption
Fast switching speed;
3nS typical
SO16 surface mount package
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www.bookham.com
Thinking RF solutions
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Electrical Performance
Ambient temperature = 223C, Zo = 50
, Control voltages = 0V/-5V unless otherwise stated
P35-4250-3
Parameter Conditions
Min
Typ
Max
Units
Insertion Loss
1
DC - 1GHz
-
0.7
0.9
dB
1 - 2GHz
-
0.9
1.1
dB
Isolation
1
DC - 1GHz
26
28
-
dB
1 - 2GHz
16
20
-
dB
Input Return Loss
2
DC - 1GHz
21
28
-
dB
1 - 2GHz
14
25
-
dB
Output Return Loss
2
DC - 1GHz
21
28
-
dB
1 - 2GHz
14
22
-
dB
1dB power compression point
3
0/-5V Control; 50MHz
-
19
-
dBm
0/-5V Control; 2GHz
-
22.5
-
dBm
0/-8V Control; 50MHz
-
21.5
-
dBm
0/-8V Control; 2GHz
-
30
-
dBm
Switching Speed
50% Control to 10%90%RF
-
3
-
ns
Notes
1. Insertion Loss and Isolation measured between RF input and any output.
2. Return Loss measured in low loss switch state.
3. Input power at which insertion loss compresses by 1dB.
Typical Performance at 22 C
Insertion Loss
Isolation
Input Return Loss
Output Return Loss
Absolute Maximum Ratings
Max control voltage
-8V
Max I/P power
+30 dBm
Operating temperature
-40C to +85C
Storage temperature
-65C to +150C
Package Outline
Electrical Schematic
Package Pin Out
Switching Truth Table
Ordering Information
P35-4250-3
www.bookham.com
462/SM/00074/200 Issue 1
Bookham Technology 2003 Bookham is a registered trademark of Bookham Technology plc
MMICS
Bookham Technology plc
Caswell
Towcester
Northamptonshire
NN12 8EQ
UK
Tel: +44 (0) 1327 356 789
Fax: +44 (0) 1327 356 698
rfsales@bookham.com
Important Notice
Bookham Technology has a policy of
continuous improvement. As a result
certain parameters detailed on this flyer
may be subject to change without notice.
If you are interested in a particular product
please request the product specification
sheet, available from any RF sales
representative.
P35-4250-3
Pin
Function
Pin
Function
Pin
Function
Pin
Function
1
A4
5
Ground
9
B2
13
RF3
2
RF4
6
RF1
10
A2
14
A3
3
Ground
7
A1
11
RF2
15
B3
4
RF IN
8
B1
12
Ground
16
B4
Control Pin Voltage (V)
Path From RF IN to
A1
B1
A2
B2
A3
B3
A4
B4
RF1
RF2
RF3
RF4
-5
0
0
-5
0
-5
0
-5
Low Loss
Isolated
Isolated
Isolated
0
-5
-5
0
0
-5
0
-5
Isolated
Low Loss
Isolated
Isolated
0
-5
0
-5
-5
0
0
-5
Isolated
Isolated
Low Loss
Isolated
0
-5
0
-5
0
-5
-5
0
Isolated
Isolated
Isolated
Low Loss
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