GaAs SPST Switch
DC - 2.5 GHz
SW-259
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
1
Specifications Subject to Change Without Notice.
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q
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Electrical Specifications,
T
A
= +25C
Features
Very Low Power Consumption: 50 W
Low Insertion Loss: 1.0 dB
High Isolation: 35 dB up to 2 GHz
Very High Intercept Point: 46 dBm IP 3
Nanosecond Switching Speed
Temperature Range: -40C to + 85C
Tape and Reel Packaging Available 1
Description
M/A-COM's SW-259 is a GaAs MMIC SPST terminated switch
in a low cost SOIC 8-lead surface mount plastic package.
The SW-259 is ideally suited for use where very low power
consumption is required. Typical applications include trans-
mit/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 SW-259 is fabricated with a monolithic GaAs MMIC
using a mature 1-micron process. The process features full
chip passivation for increased performance and reliability.
1. Refer to "Tape and Reel Packaging" Section, or contact factory.
2. All measurements with 0, -5 control voltages at 1 GHz in a 50
system, unless otherwise specified.
SO-8
Model No.
Package
SW-259 PIN
SOIC 8-Lead Plastic
SW-259TR
Forward Tape & Reel
SW-259RTR
Reverse Tape & Reel
Ordering Information
Parameter Test
Conditions
2
Unit Min.
Typ.
Max
Insertion Loss
DC 0.1 GHz
dB
0.5
0.6
DC 0.5 GHz
dB
0.8
1.0
DC 1.0 GHz
dB
1.0
1.2
DC 2.0 GHz
dB
1.4
1.6
Isolation
DC 0.1 GHz
dB
62
65
DC 0.5 GHz
dB
55
58
DC 1.0 GHz
dB
45
48
DC 2.0 GHz
dB
32
35
VSWR On
DC 2.0 GHz
1.2:1
Off
DC 2.0 GHz
1.2:1
Trise, Tfall
10% to 90% RF, 90% to 10% RF
nS
4
Ton, Toff
50% Control to 90% RF, 50% Control to 10% RF
nS
8
Transients In
Band mV
35
One dB
Input Power
0.05 GHz
dBm
18
Compression Point
Input Power
0.5 2.0 GHz
dBm
23
2nd Order
Measured Relative
0.05 GHz
dBm
55
Intercept
to Input Power
0.5 2.0 GHz
dBm
68
(for two-tone input power up to +5 dBm)
3rd Order
Measured Relative
0.05 GHz
dBm
40
Intercept
to Input Power
0.5 2.0 GHz
dBm
46
(for two-tone input power up to +5 dBm)
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)
RF1
Q1
Q4
RF2
A
B
Q2
Q3
GaAs SPST Switch
SW-259
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.
Parameter
Absolute Maximum
1,2
Max. Input Power
0.05 GHz
+27 dBm
0.5 2 GHz
+34 dBm
Control Voltage
+5V, -8.5V
Storage Temperature
-65C to 150C
Absolute Maximum Ratings
1
1. Operation of this device above any one of these parameters may
cause permanent damage
2. When the RF Input power is applied to a terminated port, the
absolute maximum is +32 dBm.
2.0
1.5
1.0
0.5
0
0
0.5 1.0
1.5
2.0
2.5
FREQUENCY (GHz)
LOSS (dB)
INSERTION LOSS vs FREQUENCY
Pin No.
Description
1 GND
2 A
3 B
4 GND
5 RF2
6 GND
7 GND
8 RF1
Pin Configuration
Control Inputs
Condition of Switch
A B
RF
STATE
1 0
On
0 1
Off
Truth Table
"0" 0 -0.2V @ 20 A max.
"1" -5V @ 20A Typ to -8V @ 600 A max.
Typical Performance
+25C
90
80
70
60
50
40
30
20
10
0
0.5 1.0
1.5
2.0
2.5
FREQUENCY (GHz)
ISOLATION (
dB)
ISOLATION vs FREQUENCY
+85C
+40C
2.0
1.8
1.6
1.4
1.2
1.0
0 0.5
1.0
1.5
2.0
2.5
FREQUENCY (GHz)
LOSS (dB)
VSWR vs FREQUENCY
Electrical Schematic
Functional Schematic
8
7
6
5
1
4
3
2
RF1 GND
GND
GND
GND RF2
A
B
GaAs SPST Switch
SW-259
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
3
Specifications Subject to Change Without Notice.
V3.00
0
-5
-10
-15
-20
-25
-30
-35
-40
0
0.2
0.4
0.6
0.8
1
FREQUENCY (GHz)
S22 (dB)
S22 (On) vs FREQUENCY
0
-10
-20
-30
-40
-50
-60
-70
-80
0
0.2
0.4
0.6
0.8
1
FREQUENCY (GHz)
ISOLATION (
dB)
ISOLATION vs FREQUENCY
0
-2
-4
-6
-8
-10
-12
-14
-16
-18
0
0.2
0.4
0.6
0.8
1
FREQUENCY (GHz)
S22 (dB)
S22 (Off) vs FREQUENCY
0
-5
-10
-15
-20
-25
-30
-35
-40
0
0.2
0.4
0.6
0.8
1
FREQUENCY (GHz)
S11 (dB)
S11 (On) vs FREQUENCY
Swept Data Characterized in 75 Ohms
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