GaAs SPST Switch
DC - 2.5 GHz
Features
q
q
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SW-259
V3.00
SO-8
PIN 8
.1497-.1574
(3.80-4.00)
-B-
.2284-.2440
(5.80-6.20)
.010(0.25) M B M
Very Low Power Consumption: 50 µW
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: -40˚C to + 85˚C
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)
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.
.050(1.27) BSC.
.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
Model No.
SW-259 PIN
SW-259TR
SW-259RTR
Package
SOIC 8-Lead Plastic
Forward Tape & Reel
Reverse Tape & Reel
Electrical Specifications,
T
A
= +25°C
Parameter
Insertion Loss
Test Conditions
2
DC – 0.1 GHz
DC – 0.5 GHz
DC – 1.0 GHz
DC – 2.0 GHz
DC – 0.1 GHz
DC – 0.5 GHz
DC – 1.0 GHz
DC – 2.0 GHz
DC – 2.0 GHz
DC – 2.0 GHz
10% to 90% RF, 90% to 10% RF
50% Control to 90% RF, 50% Control to 10% RF
In Band
Input Power
0.05 GHz
Input Power
0.5 – 2.0 GHz
Measured Relative
0.05 GHz
to Input Power
0.5 – 2.0 GHz
(for two-tone input power up to +5 dBm)
Measured Relative
0.05 GHz
to Input Power
0.5 – 2.0 GHz
(for two-tone input power up to +5 dBm)
Unit
dB
dB
dB
dB
dB
dB
dB
dB
Min.
Typ.
0.5
0.8
1.0
1.4
65
58
48
35
Max
0.6
1.0
1.2
1.6
Isolation
VSWR On
Off
Trise, Tfall
Ton, Toff
Transients
One dB
Compression Point
2nd Order
Intercept
3rd Order
Intercept
62
55
45
32
1.2:1
1.2:1
nS
nS
mV
dBm
dBm
dBm
dBm
dBm
dBm
4
8
35
18
23
55
68
40
46
1. Refer to "Tape and Reel Packaging" Section, or contact factory.
2. All measurements with 0, -5 control voltages at 1 GHz in a 50Ω system, unless otherwise specified.
Specifications Subject to Change Without Notice.
M/A-COM, Inc.
North America:
Tel. (800) 366-2266
Fax (800) 618-8883
s
1
Asia/Pacific: Tel. +81 3 3263 8761
Fax +81 3 3263 8769
s
Europe: Tel. +44 (1344) 869 595
Fax +44 (1344) 300 020
GaAs SPST Switch
Absolute Maximum Ratings
1
Parameter
Max. Input Power
0.05 GHz
0.5 – 2 GHz
Control Voltage
Storage Temperature
Absolute Maximum
1,2
+27 dBm
+34 dBm
+5V, -8.5V
-65°C to 150°C
SW-259
V3.00
Functional Schematic
RF1 GND GND RF2
8
7
6
5
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.
1
GND
2
A
3
B
4
GND
Typical Performance
INSERTION LOSS vs FREQUENCY
2.0
Pin Configuration
Pin No.
1
+85°C
Description
GND
A
B
GND
RF2
GND
GND
RF1
1.5
LOSS (dB)
1.0
0.5
0
0
+25°C
2
3
4
5
+40°C
6
7
2.0
2.5
0.5
1.0
1.5
FREQUENCY (GHz)
8
ISOLATION vs FREQUENCY
90
Truth Table
Control Inputs
A
1
0
B
0
1
Condition of Switch
RF STATE
On
Off
ISOLATION (dB)
80
70
60
50
40
30
20
10
0
0.5
1.0
1.5
2.0
2.5
"0" – 0 – -0.2V @ 20 µA max.
"1" – -5V @ 20µA Typ to -8V @ 600 µA max.
FREQUENCY (GHz)
Electrical Schematic
RF1
Q1
Q3
RF2
Q4
VSWR vs FREQUENCY
2.0
1.8
LOSS (dB)
1.6
1.4
1.2
1.0
0
0.5
1.0
1.5
2.0
2.5
Q2
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 3 3263 8761
Fax +81 3 3263 8769
s
Europe: Tel. +44 (1344) 869 595
Fax +44 (1344) 300 020
GaAs SPST Switch
Swept Data Characterized in 75 Ohms
ISOLATION vs FREQUENCY
ISOLATION (dB)
0
-10
-20
-30
-40
-50
-60
-70
-80
0
0
-5
-10
-15
-20
-25
-30
-35
0.2
0.4
0.6
0.8
1
-40
0
0.2
0.4
0.6
0.8
SW-259
V3.00
S22 (On) vs FREQUENCY
S22 (dB)
1
FREQUENCY (GHz)
FREQUENCY (GHz)
S11 (On) vs FREQUENCY
0
-5
S22 (Off) vs FREQUENCY
0
-2
-4
-6
-8
-10
-12
-14
-16
-18
0
S11 (dB)
-25
-30
-35
-40
0
0.2
0.4
0.6
0.8
1
S22 (dB)
-10
-15
-20
0.2
0.4
0.6
0.8
1
FREQUENCY (GHz)
FREQUENCY (GHz)
Specifications Subject to Change Without Notice.
M/A-COM, Inc.
North America:
Tel. (800) 366-2266
Fax (800) 618-8883
s
3
Asia/Pacific: Tel. +81 3 3263 8761
Fax +81 3 3263 8769
s
Europe: Tel. +44 (1344) 869 595
Fax +44 (1344) 300 020
