3 Volt GaAs SPDT Switch, DC - 2.0 GHz
SW-395
M/A-COM Division of AMP Incorporated
3
North America: Tel. (800) 366-2266, Fax (800) 618-8883
3
Asia/Pacific: Tel.+85 2 2111 8088, Fax +85 2 2111 8087
3
Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
www.macom.com
AMP and Connecting at a Higher Level are trademarks.
Specifications subject to change without notice.
V2.00
Features
Low Insertion Loss: <0.7 dB @ 900 MHz
Low Power Consumption: <10
A @ =3 VDC
Very High Intercept Point: 52 dBm IP
3
Both Positive and Negative 3 to 8 V Control
Low Cost SOT-26 Package
SOT-26
1
Electrical Specifications: T
A
= +25C
1
3 Volt GaAs SPDT Switch
DC - 2.0 GHz
SW-395
Parameter
Test Conditions
Units
Min.
Typ.
Max.
Insertion Loss
DC - 1.0 GHz
dB
0.7
0.9
1.0 - 2.0 GHz
dB
0.8
1.0
Isolation
DC - 1.0 GHz
dB
23
25
1.0 - 2.0 GHz
dB
17
19
VSWR
DC - 2.0 GHz
1.3:1
1 dB Compression
Input Power (3V Control) 0.5 GHz
dBm
27
Input Power (5V Control) 0.5 GHz
dBm
28
Input Power (3V Control) 0.05 GHz
dBm
16
Input Power (5V Control) 0.05 GHz
dBm
18
T
rise
, T
fall
10% to 90% RF, 90% to 10% RF
S
7
T
on
, T
off
50% Control to 90% RF, Control to 10% RF
S
8
Transients
In-band
mV
38
Input IP
2
2-Tone, 5 MHz spacing, 3 V Control 0.05 GHz
dBm
61
+10 dBm each 0.5 GHz
dBm
71
Input IP
3
2-Tone, 5 MHz spacing, 3 V Control 0.05 GHz
dBm
48
+10 dBm each 0.5 GHz
dBm
52
Description
M/A-COM's SW-395 is a GaAs monolithic switch in a low cost
SOT-26 surface mount plastic package. The SW-395 is ideally
suited for applications where very low power consumption, low
intermodulation products, very small size and low cost are
required. Typical application is an internal/external antenna
select switch for portable telephones and data radios. In addi-
tion, because of its low loss, good isolation and inherent speed,
the SW-395 can be used as a conventional T/R switch or as an
antenna diversity switch. The SW-395 can be used in power
applications up to 0.5 Watts in systems such as cellular, PCN,
GSM an other analog/digital wireless communications systems.
The SW-395 is fabricated using a mature 1-micron gate length
GaAs MESFET process. The process features full chip passiva-
tion for increased performance and reliability.
Ordering Information
Part Number
Package
SW-395 PIN
SOT-26 Plastic Package
SW-395TR
Forward Tape and Reel
1
1. Refer to Application Note M513 for reel size information.
1.
All measurements at 1 GHz in a 50
system with a 3V control unless otherwise specified. Loss varies at 0.003 dB/C.
PIN 1
XX#Y
1. Dimensions are in: inches/mm
3 Volt GaAs SPDT Switch, DC - 2.0 GHz
SW-395
M/A-COM Division of AMP Incorporated
3
North America: Tel. (800) 366-2266, Fax (800) 618-8883
3
Asia/Pacific: Tel.+85 2 2111 8088, Fax +85 2 2111 8087
3
Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
www.macom.com
AMP and Connecting at a Higher Level are trademarks.
Specifications subject to change without notice.
V2.00
ISOLATION vs FREQUENCY
0
5
10
15
20
25
30
35
40
45
50
0
0.5
1
1.5
2
2.5
3
3.5
FREQUENCY (GHz)
ISOLATION (dB)
VSWR vs FREQUENCY
1
1.1
1.2
1.3
1.4
1.5
0
0.5
1
1.5
2
2.5
3
3.5
FREQUENCY (GHz)
VSWR (dB)
INSERTION LOSS vs FREQUENCY
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
0
0.5
1
1.5
2
2.5
3
3.5
FREQUENCY (GHz)
INSERTION LOSS (dB)
Parameter
Absolute Maximum
Input Power
+33 dBm
Operating Voltage
+8.5 Volts
Operating Temperature
-40C to +85C
Storage Temperature
-65C to +150C
Absolute Maximum Ratings
1
1.
Exceeding any one or a combination of these limits may cause
permanent damage.
Typical Performance Curves
Insertion Loss vs. Frequency
VSWR vs. Frequency
Functional Schematic
1
Mode
(Control)
Control
A
Control
B
RFC - RF1
RFC - RF2
Positive
1
00.2V
+3V to +8V
+3V to +8V
00.2V
Off
On
On
Off
Positive/
Negative
1,2
-Vc0.2V
+Vc
+Vc
-Vc0.2V
On
Off
Off
On
Negative
3
00.2V
-3V to -8V
-3V to -8V
00.2V
On
Off
Off
On
Truth Table
1. External DC blocking capacitors are required on all RF ports.
2. |-Vc|<
8 V.
3. If negative control is used, DC blocking capacitors are not re-
quired on RF ports.
R F1 G N D R F2
V A
R FC
V B
P IN 1
Isolation vs Frequency
1. DC blocking capacitors not required if negative control voltage is
used.
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