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參數(shù)資料
| 型號(hào)： | SW-438SMB |
| 英文描述： | GaAs SPDT Switch DC. 3.0 GHz |
| 中文描述： | 砷化鎵單刀雙擲開關(guān)直流。 3.0千兆赫 |
| 文件頁(yè)數(shù)： | 1/4頁(yè) |
| 文件大小： | 84K |
| 代理商： | SW-438SMB |
S
Functional Schematic
V 1.00
Features
1. For best results at 2.4 GHz, use 8 pF 0402 profile SMT capaci-
tors on RF ports and 100 pF bypassing on pins 4 and 6.
Description
Low Insertion Loss, 0.7 dB @ 2.4 GHz
1
High Isolation, 25 dB @ 2.4 GHz
1
Low Power Consumption, < 10 μA @ +3 V
Low Cost Plastic SOT-363 Package
The SW-438 is a GaAs MMIC SPDT switch in a low cost
SOT-363 surface mount plastic package. Typical applica-
tions include transmit/receive switching for Bluetooth and
WLAN equipment. The SW-438 can also be used in applica-
tions up to 500 mW in systems such as cellular, PCS,
DCS1800, GSM, CDMA and other analog and digital wire-
less communications systems.
M/A-COM fabricates the SW-438 using a 0.5 micron gate
length GaAs p-HEMT process. The process features full pas-
sivation for increased performance and reliability.
GaAs SPDT Switch
DC– 3.0 GHz
RF1 GND RF2
V1
RFC
V2
PIN 1
C
3
39pF
C
3
39pF
C
3
39pF
C=100pF
C=100pF
Broad Band Applications
RF1 GND RF2
V1
RFC
V2
PIN 1
C=8pF
C=8pF
C=8pF
C=100pF
C=100pF
2.4 GHz Application
External Component Requirements
Please note the values of the external capacitors. The ca-
pacitors at each of the RF ports are used as for achieving
optimum insertion loss. They also provide DC blocking for
positive control. The 8 pF (0402) capacitor is recom-
mended
for 2 - 3 GHz operation. If this value is changed or
the capacitor placed too far from the
switch, the
perform-
ance will be affected. We also recommend 100 pF bypass
capacitors on pins 4 and 6.
For broadband applications with positive control voltages,
use DC blocking capacitors with value of 39 pF or more
.
Pin Configuration
Pin No.
Function
Description
1
RF1
RF Input/Output
2
GND
RF Ground
3
RF2
RF Input/Output
4
V2
Control 2 Input
5
RFC
RF Common Port
6
V1
Control 1 Input
Ordering Information
Part Number
Package
SW-438TR-3000
SW-438 on 13 Inch, 3000 piece Reel
SW-438SMB
SW-438 sample test board
Mode
(Control)
V1
V2
RFC-RF1
RFC-RF2
Positive
1
0 + 0.2V
+2.3 to +5V
+2.3 to +5V
0 + 0.2V
Off
On
On
Off
Negative
2
0 + 0.2V
-2.3 to +5V
-2.3 to +5V
0 + 0.2V
On
Off
Off
On
Truth Table
1.
2.
External DC blocking capacitors are required on all RF ports.
If negative control is used, DC blocking capacitors are not required on RF ports.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SW-439 | GaAs High Isolation Switch DC - 3.0 GHz |
| SW-439TR | GaAs High Isolation Switch DC - 3.0 GHz |
| SW-442 | GaAs SPDT Terminated Switch DC - 3.0 GHz |
| SW-442RTR | GaAs SPDT Terminated Switch DC - 3.0 GHz |
| SW-442SMB | GaAs SPDT Terminated Switch DC - 3.0 GHz |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SW-438TR-3000 | 制造商:MA-COM 制造商全稱:M/A-COM Technology Solutions, Inc. 功能描述:GaAs SPDT Switch DC. 3.0 GHz |
| SW-439 | 制造商:MA-COM 制造商全稱:M/A-COM Technology Solutions, Inc. 功能描述:Drivers for GaAs FET Switches and Digital Attenuators |
| SW-439_V4 | 制造商:MA-COM 制造商全稱:M/A-COM Technology Solutions, Inc. 功能描述:GaAs High Isolation Switch |
| SW-439PIN | 制造商:MA-COM 制造商全稱:M/A-COM Technology Solutions, Inc. 功能描述:GaAs High Isolation Switch DC - 3.0 GHz |
| SW-439SMB | 制造商:MA-COM 制造商全稱:M/A-COM Technology Solutions, Inc. 功能描述:GaAs High Isolation Switch DC - 3.0 GHz |
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