GaAs SPST Single Positive Control Matched Switch
0.5 - 1.5 GHz
SW-349
Preliminary Specifications
V3.00
Features
Single Supply Voltage +3 V to +5 V
Single Control +3 V to +5 V
Matched Input and Output
Low Distortion 47 dBm IP3 @ 0.5 GHz with +5 V
Low Power Consumption <10 mA @ 5 V typ.
Low Cost Plastic SOIC-8 Package
Part Number
Package
SW-349 PIN
SOIC 8-Lead Plastic
SW-349TR
Foward Tape & Reel *
SW-349RTR
Reverse Tape & Reel *
Description
The SW-349 is a GaAs MMIC matched SPST switch in a low
cost plastic SOIC 8-lead package. This switch is designed
for high isolation from 0.5-1.5 GHz, with typical isolation
greater than 40 dB @ 0.9 GHz. The SW-349 requires exter-
nal DC blocks on the RF ports. The SW-349 is ideally suited
for applications where very low power consumption (<10
mA @ 5 V) and low intermodulation products are required.
Typical applications include switching and blanking for
radio and cellular equipment, wireless LANs, GPS equip-
ment and other RF control circuits.
The SW-349 is fabricated with a GaAs MMIC using a mature
1-micron process. The process features full chip passivation
for increased performance and reliability.
SO-8
Parameter
Test Conditions
1
Units
Min.
Typ.
Max.
Insertion Loss
500-1500 MHz
dB
0.9
1.2
Isolation
500 - 1500 MHz
dB
20
750 - 960 MHz
dB
35
38
VSWR
500 - 750 MHz
1.5:1
1.7:1
750 - 960 MHz
1.3:1
1.4:1
960 - 1500 MHz
1.2:1
1.3:1
Trise, Tfall
10%-90% RF, 90% - 10% RF
S
1
Ton , Toff
50% Control to 90% RF, 50% Control to 10% RF
S
2
Transients
In Band
mV
20
1 dB Compression
Vctl = +5 V
500 MHz
dBm
26
Vctl = +3 V
500 MHz
dBm
20
Input IP3
Vctl = +5 V
2
dBm
47
Vctl = +3 V
2
dBm
44
Input IP2
Vctl = +5 V
2
dBm
60
Vctl = +3 V
2
dBm
56
1. All measurements are in a 50 ohm system. DC blocks are required on RF1 and RF2. Vin Low = 0V 0.2V, Vin High = V
S
0.2V, V
S
= +3 to +5V.
For inputs under 20 dBm, hot switching can be used.
2. Two tone +5 dBm each (+8 dBm total) F1 = 900 MHz, F2 = 900.05 MHz.
Electrical Specifications,
T
A
= +25C
Ordering Information
q
q
q
q
q
q
*If specific reel size is required, consult factory for part number
assignment.
M/A-COM, Inc.
North America:
Tel. (800) 366-2266
s
Asia/Pacific: Tel. +81 3 3263 8761
s
Europe: Tel. +44 (1344) 869 595
Fax (800) 618-8883
Fax +81 3 3263 8769
Fax +44 (1344) 300 020
1
Specifications Subject to Change Without Notice.
0-8
.0075-0.0098
(0.19-0.25)
.1890-.1968
(4.80-5.00)
.0099-0.0196
x 45 Chamfer
(0.25-0.50)
.2284-.2440
(5.80-6.20)
PIN 8
Orientation
mark
PIN 1
8- Lead SOP outline dimensions
Narrow body .150
(All dimensions per JEDEC No. MS-012-AA, Issue C)
Dimensions in ( ) are in mm.
.1497-.1574
(3.80-4.00)
- B -
- A -
.050(1.27) BSC.
.013-.020 TYP.
(0.33-0.51)
.0040-.0098
(0.10-0.25)
- C -
.0532-.0688
(1.35-1.75)
.016-.050
(0.40-1.27)
.010(0.25) M B M
.010(0.25) M C A M B S
Unless Otherwise Noted: .xxx = 0.010 (.xx = 0.25)
.xx = 0.02 (.x = 0.5)
.004 (0.10)
GaAs SPST Single Positive Control Matched Switch
SW-349
V3.00
M/A-COM, Inc.
North America:
Tel. (800) 366-2266
s
Asia/Pacific: Tel. +81 3 3263 8761
s
Europe: Tel. +44 (1344) 869 595
Fax (800) 618-8883
Fax +81 3 3263 8769
Fax +44 (1344) 300 020
2
Specifications Subject to Change Without Notice.
Typical Performance
@ +25C
2. DC Blocks are required on RF1 and RF2.
Parameter
Absolute Maximum
RF Input Power @ +3 V
+23 dBm
RF Input Power @ +5 V
+29 dBm
Supply Voltage (V
s
)
+8 V
Control Voltage (Vctl)
V
s
+0.2 V
Operating Temperature
-40C to +85C
Storage Temperature
-65C to +150C
1. Operation of this device above any one of these parameters
may cause permanent damage.
Truth Table
Absolute Maximum Ratings
1
Functional Schematic
1
Control Input
+Vctl
RF1-RF2
Vin Low
ON
Vin High
OFF
Vin Low = 0 to +0.2 V @ 5 A typ.
Vin High = Vs 0.2 V @ 10 A typ
.
ISOLATION vs FREQUENCY
INSERTION LOSS vs FREQUENCY OVER TEMPERATURE
OUTPUT VSWR vs FREQUENCY
Vs
GND
Vctl
GND
GND
GND
RF2
RF1
1
2
3
4
8
7
6
5
ISOLATION (dB)
INSERTION LOSS (dB)
FREQUENCY (GHz)
FREQUENCY (GHz)
FREQUENCY (GHz)
0.5
0.7
0.9
1.1
1.3
1.5
0.5
0.7
0.9
1.1
1.3
1.5
0.50
0.75
1.00
1.25
1.50
1.2
1.0
0.8
0.6
0.4
0.2
0.0
1.6
1.5
1.4
1.3
1.2
1.1
1.0
60
55
50
45
40
35
30
25
VSWR
+85C
+25C
-40C
Off
On
INPUT VSWR vs FREQUENCY
FREQUENCY (GHz)
0.5
0.7
0.9
1.1
1.3
1.5
1.6
1.5
1.4
1.3
1.2
1.1
1.0
VSWR
Off
On
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