MA-COM SW-425

3 Watt Cellular T/R and Antenna Changeover Switch, DC - 3.0 GHz
SW-425
SW-425
3 Watt Cellular T/R and Antenna
Changeover Switch, DC - 3.0 GHz
SOT-26 Plastic Package
Features
•
•
•
•
•
•
Low Cost Plastic SOT-26 Package
Low Insertion Loss <0.6dB @ 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
XX#Y
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
(<10µ[email protected]), 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 celluar PCS, CDMA, W-CDMA,
TDMA, GSM and other analog/digital wireless communications
systems.
The SW-425 is fabricated using a new 0.5 micron gate length GaAs
PHEMT process. The process features full chip passivation for
increased performance and reliability.
Electrical Specifications TA = 25°C
PIN 1
Ordering Information
Part Number
SW-425 PIN
SW-425TR
SW-425RTR
Package
SOT-26 Plastic Package
1
Forward Tape and Reel
1
Reverse Tape and Reel
1. Reference Application Note M513 for reel size information.
Parameter
Insertion Loss
Insertion Loss
Insertion Loss
Isolation
Isolation
Isolation
VSWR
P1dB (3V supply)
Test Conditions
DC - 1 GHz
1- 2 GHz
2 - 3 GHz
DC - 1 GHz
1 - 2 GHz
2 - 3 GHz
DC - 3 GHz
500 MHz - 3 GHz
Units
dB
dB
dB
dB
dB
dB
Min.
dBm
32
Typ.
0.4
0.55
0.7
20
15
12
1.2:1
34
P1dB (5V supply)
500 MHz - 3 GHz
dBm
34
36
Input IP2
2-Tone, 5 MHz spacing,
0.9 GHz
+10 dBm (+13 dBm total) VCTL=3V
2-Tone, 5 MHz spacing,
0.9 GHz
+10 dBm (+13 dBm total) VCTL=3V
Pin 30 dBm |VCTL| = 3V
dBm
62
70
dBm
48
53
dBc
65
45
70
48
Pin 33 dBm |VCTL| = 5V
dBc
65
65
75
75
10% to 90% RF, 90% to 10% RF
50% Control to 90% RF, Control to 10% RF
In-Band
VCTL = 3 V
nS
nS
mV
µA
Input IP3
nd
Harmonics
2
rd
3
Harmonics
2nd
3rd
Trise, Tfall
Ton, Toff
Transients
Gate Leakage Current
18
13
10
60
20
20
10
Max.
0.5
0.65
0.8
1.4:1
20
V2.00
M/A-COM Division of AMP Incorporated 3 North America: Tel. (800) 366-2266, Fax (800) 618-8883 3 Asia/Pacific: Tel.+85 2 2111 8088, Fax +85 2 2111 8087
3 Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
www.macom.com
AMP and Connecting at a Higher Level are trademarks.
Specifications subject to change without notice.
3 Watt Cellular T/R and Antenna Changeover Switch, DC - 3.0 GHz
1
Absolute Maximum Ratings
Parameter
Max. Input Power (0.5 - 3.0 GHz)
3 V Control
5 V Control
Operating Temperature
Storage Temperature
SW-425
Functional Diagram
Absolute Maximum
VA
RFC
VB
RF1
GND
RF2
+36 dBm
+38 dBm
-40°C to +85°C
-65°C to +150°C
1. Exceeding any one or combination of these limits may cause
permanent damage.
PIN 1
Truth Table
Mode
(Control)
Positive1
Postitive/
Negative1,2
Negative3
Control
A
Control
B
RFC - RF1 RFC - RF2
0±0.2V
+2.5 to +8V
+2.5 to +8V
0±0.2V
Off
On
On
Off
-Vc±0.2V
+Vc
+Vc
-Vc±0.2V
Off
On
On
Off
0±0.2V
-2.5V to -8V
-2.5V to -8V
0±0.2V
On
Off
Off
On
1. External DC blocking capacitors are required on all RF ports.
39pF capacitors used for positive control voltage.
2. |-VCTL|, VCTL ≤ 8 V
3. If negative control is used, DC blocking capacitors are not required
on RF Ports.
PIN Configuration
PIN No.
Function
Description
1
RF1
RF in/out
2
GND
RF Ground
3
RF2
RF in/out
4
VB
V Control B
5
RFC
RF COMMON
6
VA
V Control A
Handling Procedures
The following precautions should be observed to avoid damage:
Static Sensitivity
Gallium arsenide Integrated Circuits are ESD sensitive and can
be damaged by static electricity. Proper ESD techniques should
be used when handling these devices.
V2.00
M/A-COM Division of AMP Incorporated 3 North America: Tel. (800) 366-2266, Fax (800) 618-8883 3 Asia/Pacific: Tel.+85 2 2111 8088, Fax +85 2 2111 8087
3 Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
www.macom.com
AMP and Connecting at a Higher Level are trademarks.
Specifications subject to change without notice.
3 Watt Cellular T/R and Antenna Changeover Switch, DC - 3.0 GHz
SW-425
Typical Performance Curves
rd
3 Harmonic vs. VCTL at fO = 900 MHz
P1dB *
HARMONICS (dBc)
COMPRESSION (dBm)
Input Compression Point vs. VCTL at 900 MHz
40
38
36
34
32
30
28
26
24
22
20
P0.1dB
*Above VCTL=4V, P1dB is not measurable
due to thermal runaway conditions
2.5
3
3.5
4
4.5
5
5.5
6
6.5
7
7.5
8
90
85
80
75
70
65
60
55
50
45
40
35
30
Pin=29dBm
2.5
3
3.5
4
4.5
2nd Harmonic vs. VCTL at fO = 900 MHz
INSERTION LOSS (dB)
HARMONICS (dBc)
80
75
70
65
55
Pin=29dBm
Pin=33dBm
Pin=31dBm
Pin=34dBm
50
2.5
3
3.5
4
4.5
5.5
6
6.5
7
7.5
8
Insertion Loss vs. Frequency and Temperature
Pin=28dBm
Pin=30dBm
5
VCTL (V)
90
60
Pin=33dBm
Pin=28dBm
VCTL (V)
85
Pin=34dBm
Pin=31dBm
Pin=30dBm
5
5.5
VCTL (V)
6
6.5
7
7.5
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
85°C
25°C
-40°C
0
8
0.5
1
1.5
2
2.5
3
FREQUENCY (GHz)
Isolation vs. Frequency and Temperature
VSWR vs. Frequency and Temperature
1.5
50
1.4
40
35
VSWR
ISOLATION (dB)
45
30
25
1.3
25°C
-40°C
1.2
85°C, -40°C, 25°C
20
1.1
15
85°C
10
1
0
0.5
1
1.5
2
2.5
FREQUENCY (GHz)
3
0
0.5
1
1.5
2
2.5
3
FREQUENCY (GHz)
V2.00
M/A-COM Division of AMP Incorporated 3 North America: Tel. (800) 366-2266, Fax (800) 618-8883 3 Asia/Pacific: Tel.+85 2 2111 8088, Fax +85 2 2111 8087
3 Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
www.macom.com
AMP and Connecting at a Higher Level are trademarks.
Specifications subject to change without notice.