SW-425
3 Watt Cellular T/R and Antenna Changeover Switch
DC - 3.0 GHz
Features
•
•
•
•
•
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Low Cost Plastic SOT-26 Package
Low Insertion Loss: < 0.6 dB @ 1900 MHz
Low Power Consumption: <20µA @ +3V
Very High Intercept Point: 53 dBm IP3
Both Positive and Negative 2.5 to 8 V Control
For CDMA, W-CDMA, TDMA, GSM, PCS and
DCS Applications
Rev. V5
Functional Diagram
6
5
4
Description
M/A-COM’s SW-425 is a GaAs monolithic switch in a
low cost SOT-26 surface mount plastic package. The
SW-425 is ideally suited for applications where very low
power
consumption
(<10µA@5V),
low
intermodulation products and very small size are
required. Typical applications include Internal/External
antenna select switch for portable telephones and data
radios. In addition, because of its low loss, good
isolation and inherent speed, the SW-425 can be used
as a conventional T/R switch or as an antenna diversity
switch. The SW-425 can be used in power applications
up to 3 watts in systems such as cellular PCS, CDMA,
W-CDMA, TDMA, GSM and other analog/digital
wireless communications systems.
The SW-425 is fabricated using M/A-COM’s 0.5 micron
gate length GaAs PHEMT process. The process
features full chip passivation for increased performance
and reliability.
1
2
3
Pin Configuration
Pin No.
1
2
3
Function
RF1
Ground
RF2
Pin No.
4
5
6
Function
VB
RF Common
VA
Ordering Information
1
Part Number
SW-425 PIN
SW-425TR
Truth Table
Package
Bulk Packaging
1000 piece reel
Mode
(Control)
Positive
4
Positive/
Negative
3,4
Negative
5
Control A Control B
0 + 0.2 V +2.5 to +8 V
+2.5 to +8 V 0 + 0.2 V
-Vc + 0.2 V
+Vc
0 + 0.2 V
-2.5 to -8 V
+Vc
-Vc + 0.2 V
-2.5 to -8 V
0 + 0.2 V
RFC -
RF1
Off
On
Off
On
On
Off
RFC -
RF2
On
Off
On
Off
Off
On
1. Reference Application Note M513 for reel size information.
Absolute Maximum Ratings
2
Parameter
Input Power (0.5—3.0 GHz)
3 V Control
5 V Control
Operating Temperature
Storage Temperature
Absolute Maximum
+36 dBm
+38 dBm
-40°C to +85°C
-65°C to +150°C
3. External DC blocking capacitors are required on all RF ports.
39 pF capacitors can be used for positive control voltage.
4. [-VCTL], VCTL < 8 V
5. If negative control is used, DC blocking capacitors are not
required on RF ports.
2. Exceeding any one or combination of these limits may cause
permanent damage to this device.
1
ADVANCED:
Data Sheets contain information regarding a product M/A-COM Technology Solutions
•
North America
Tel: 800.366.2266 •
Europe
Tel: +353.21.244.6400
is considering for development. Performance is based on target specifications, simulated results,
•
India
Tel: +91.80.43537383
•
China
Tel: +86.21.2407.1588
and/or prototype measurements. Commitment to develop is not guaranteed.
Visit www.macomtech.com for additional data sheets and product information.
PRELIMINARY:
Data Sheets contain information regarding a product M/A-COM Technology
Solutions has under development. Performance is based on engineering tests. Specifications are
typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available.
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
Commitment to produce in volume is not guaranteed.
changes to the product(s) or information contained herein without notice.
MA-COM [ M/A-COM TECHNOLOGY SOLUTIONS, INC. ]
