GaAs SPDT Terminated Switch
DC - 2.5 GHz
SW-337, SW-338, SW-339
V2.00
Features
q
q
q
SO-8
PIN 8
.1497-.1574
(3.80-4.00)
-B-
.2284-.2440
(5.80-6.20)
.010(0.25) M B M
q
q
q
q
q
Very Low Power Consumption: 75 µW
Low Insertion Loss: 0.5 dB
High Isolation: 33 dB up to 2 GHz (SW-337, SW-338)
28 dB up to 2 GHz (SW-339)
Very High Intercept Point: 46 dBm IP
3
Nanosecond Switching Speed
Temperature Range: -40°C to +85°C
Low Cost SOIC8 Plastic Package
Tape and Reel Packaging Available
1
Orientation
mark
PIN 1
.1890-.1968
(4.80-5.00)
-A-
.004 (0.10)
.0532-.0688
(1.35-1.75)
0°-8°
-C-
.0040-.0098
(0.10-0.25)
.013-.020 TYP.
(0.33-0.51)
.0099-0.0196
x 45° Chamfer
(0.25-0.50)
.016-.050
(0.40-1.27)
.0075-0.0098
(0.19-0.25)
.050(1.27) BSC.
Description
M/A-COM’s SW-337, SW-338 and SW-339 are GaAs MMIC
SPDT terminated switches in a low cost SOIC 8-lead
surface mount plastic package. They are ideally suited for
use where very low power consumption is required.
Typical applications include transmit/receive switching,
switch matrices, and filter banks in systems such as: radio
and cellular equipment, PCM, GPS, fiber optic modules,
and other battery powered radio equipment. The difference
between the switches is in the pin configuration.
The SW-337, SW-338 and SW-339 are fabricated with
monolithic GaAs MMICs using a mature 1-micron process.
The process features full chip passivation for increased
performance and reliability.
.010(0.25) M C A M B S
8-Lead SOP outline dimensions
Narrow body .150
(All dimensions per JEDEC No. MS-012-AA, Issue C)
Dimensions in ( ) are in mm.
Unless otherwise noted: .xxx = ±0.010 (.xx = ±0.25)
.xx = ±0.02 (.x = ±0.5)
Ordering Information
Part Number
SW-337 PIN
SW-337 TR
SW-337 RTR
SW-338 PIN
SW-338 TR
SW-338 RTR
SW-339 PIN
SW-339 TR
SW-339 RTR
Package
SOIC 8 Lead
Forward Tape & Reel
Reverse Tape & Reel
SOIC 8 Lead
Forward Tape & Reel
Reverse Tape & Reel
SOIC 8 Lead
Forward Tape & Reel
Reverse Tape & Reel
Electrical Specifications,
T
A
= ±25°C
DC – 0.1 GHz
DC – 0.5 GHz
DC – 1.0 GHz
DC – 2.0 GHz
Isolation
DC – 0.1 GHz
DC – 0.5 GHz
DC – 1.0 GHz
DC – 2.0 GHz
VSWR
On
DC – 2.0 GHz
Off
DC – 2.0 GHz
Trise, Tfall
10% to 90% RF, 90% to 10% RF
Ton, Toff
50% Control to 90% RF, 50% Control to 10% RF
Transients
In Band
One dB
Input Power
0.05 GHz
Compression Point Input Power
0.5 – 2.0 GHz
2nd Order
Measured Relative
0.05 GHz
Intercept
to Input Power
0.5 – 2.0 GHz
(for two-tone input power up to +5 dBm)
3rd Order
Measured Relative
0.05 GHz
Intercept
to Input Power
0.5 – 2.0 GHz
(for two-tone input power up to +5 dBm)
1. Refer to "Tape and Reel Packaging" Section, or contact factory.
Specifications Subject to Change Without Notice.
Parameter
Insertion Loss
Test Conditions
2
Unit
dB
dB
dB
dB
dB
dB
dB
dB
nS
nS
mV
dBm
dBm
dBm
dBm
dBm
dBm
SW-337, SW-338
Min.
Typ.
Max
0.4
0.6
0.5
0.7
0.5
0.7
0.7
0.9
50
53
43
46
36
39
30
33
1.2:1
1.2:1
7
10
25
25
30
60
65
40
46
Min.
50
43
35
25
SW-339
Typ.
0.4
0.5
0.5
0.7
53
46
38
28
1.2:1
1.2:1
7
10
25
25
30
60
65
40
46
Max.
0.6
0.7
0.7
0.9
2. All measurements with 0, -5 control voltages at 1 GHz in a 50Ω
system, unless otherwise specified.
M/A-COM, Inc.
North America:
Tel. (800) 366-2266
Fax (800) 618-8883
s
1
Asia/Pacific: Tel. +81 (03) 3226-1671
Fax +81 (03) 3226-1451
s
Europe: Tel. +44 (1344) 869 595
Fax +44 (1344) 300 020
GaAs SPDT Terminated Switch
Absolute Maximum Ratings
Parameter
Max. Input Power
0.05 GHz
0.5 – 2.0 GHz
Control Voltage
Operating Temperature
Storage Temperature
+27 dBm
+34 dBm
+5V, -8.5V
-40°C to +85°C
-65°C to +150°C
RFC 1
GND 2
RF1 3
A 4
SW-337, SW-338, SW-339
V2.00
Functional Schematics
SW-337
A 1
RFC 2
B 3
GND 4
8 RF2
7 GND
6 GND
5 RF1
B 1
RFC 2
A 3
GND 4
Absolute Maximum
1
SW-338
8 RF2
7 GND
6 GND
5 RF1
SW-339
8 GND
7 GND
6 RF2
5 B
1. Operation of this device above any one of these parameters may
cause permanent damage.
Typical Performance
@ +25°C
INSERTION LOSS vs FREQUENCY
2.0
Pin Configuration
SW-337
Pin
No. Description
SW-338
Pin
No. Description
1
2
3
4
5
6
7
8
B
RF Common
A
GND
RF1
GND
GND
RF2
SW-339
Pin
No. Description
1
2
3
4
5
6
7
8
RF Common
GND
RF1
A
B
RF2
GND
GND
1.5
LOSS (dB)
SW-337, SW-338
1.0
0.5
SW-339
0
0
0.5
1.0
1.5
2.0
2.5
1
2
3
4
5
6
7
8
A
RF Common
B
GND
RF1
GND
GND
RF2
FREQUENCY (GHz)
ISOLATION vs FREQUENCY
80
70
Truth Table
Control Inputs
SW-337, SW-338
ISOLATION (dB)
60
50
40
30
20
10
0
0
0.5
1.0
1.5
2.0
2.5
Condition of Switch
RF Common to Each RF Port
RF1
ON
OFF
RF2
OFF
ON
A
1
0
B
0
1
SW-339
"0" – 0 – -0.2V @ 20 µA max.
"1" – -5V @ 30 µA Typ to -8V @ 720 µA max.
FREQUENCY (MHz)
VSWR vs FREQUENCY
2.0
1.8
1.6
Electrical Schematic
RF COM
RF1
Q5
Q1
Q2
Q6
Q3
Q4
Q7
RF2
Q8
VSWR
RCF, RF1, RF2 On
1.4
T1
1.2
G1
G2
T2
RF1, RF2 Off
1.0
0
0.5
1.0
1.5
2.0
2.5
A
B
FREQUENCY (GHz)
Specifications Subject to Change Without Notice.
2
North America:
Tel. (800) 366-2266
Fax (800) 618-8883
s
M/A-COM, Inc.
Asia/Pacific: Tel. +81 (03) 3226-1671
Fax +81 (03) 3226-1451
s
Europe: Tel. +44 (1344) 869 595
Fax +44 (1344) 300 020
PCB Design
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