SW-438 [TE]
GaAs SPDT Switch DC. 3.0 GHz; 砷化镓SPDT开关DC 。 3.0 GHz的
| 型号： | SW-438 |
| 厂家： | 
TE CONNECTIVITY |
| 描述： | GaAs SPDT Switch DC. 3.0 GHz |
| 文件： | 总4页 (文件大小：87K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
GaAs SPDT Switch
DC– 3.0 GHz
V 1.00
Features
Functional Schematic
·
·
·
·
Low Insertion Loss, 0.7 dB @ 2.4 GHz1
High Isolation, 25 dB @ 2.4 GHz1
C=8pF
C 39pF
C=100pF
C=100pF
C=100pF
C=100pF
Low Power Consumption, < 10 µA @ +3 V
Low Cost Plastic SOT-363 Package
V1
RFC
V2
V1
RFC
V2
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
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.
RF1
GND
RF2
RF1
GND
RF2
PIN 1
PIN 1
Broad Band Applications
39pF
2.4 GHz Application
C=8pF
C=8pF
C
C 39pF
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.
Pin Configuration
Pin No.
Function
Description
1
2
3
4
5
RF1
GND
RF2
V2
RF Input/Output
RF Ground
External Component Requirements
RF Input/Output
Control 2 Input
RF Common Port
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.
RFC
6
V1
Control 1 Input
Ordering Information
For broadband applications with positive control voltages,
use DC blocking capacitors with value of 39 pF or more.
Part Number
SW-438TR-3000
SW-438SMB
Package
SW-438 on 13 Inch, 3000 piece Reel
SW-438 sample test board
Truth Table
Mode
V1
V2
RFC-RF1
RFC-RF2
(Control)
Positive1
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
1. External DC blocking capacitors are required on all RF ports.
2. If negative control is used, DC blocking capacitors are not required on RF ports.
GaAs SPDT Switch, DC-3.0 GHz
SW-438
V 1.00
Electrical Specifications: TA = 25°C, 3V Control
Parameter
Insertion Loss
Isolation
Test Conditions
Units
Min
Typ
Max
DC-3.0 GHz
dB
0.7
0.8
DC-1.0 GHz
1.0-2.0 GHz
2.0-3.0 GHz
dB
dB
dB
29
23
21
31
25
23
Return Loss
DC-1.5 GHz
1.5-3.0 GHz
dB
dB
18
16
22
20
P1dB (2.3 V supply)
P1dB (3V supply)
IP2
500 MHz-2.0 GHz
500 MHz-2.0 GHz
dBm
dBm
dBm
dBm
dBc
dBc
ns
23
28
26
31
81
55
70
60
20
10
5
2-tone 900 MHz, 5 MHz spacing (2.3V)
2-tone 900 MNz, 5 MHz spacing (2.3V)
2.4 GHz Pin = 20 dBm, Vc = 2.3V
2.4 GHz Pin = 20 dBm, Vc = 2.3V
50% ctl to 10/90% RF
IP3
2nd Harmonic
3rd Harmonic
Ton, Toff
Trise, Tfall
Gate Leakage
10% to 90% RF
ns
|Vctl| = 5V
µA
10
Typical Performance Curves
Bluetooth Applications
(8 pF DC Blocking Capacitors, +2.3V Control)
Insertion Loss vs. Frequency Over Temperature
Isolation vs. Frequency Over Temperature
30
29
28
27
1.0
0.9
+85°C
0.8
+25°C
0.7
26
0.6
-40°C
+25°C
-40°C
0.5
25
24
0.4
0.3
0.2
0.1
0.0
+85°C
23
22
21
20
2.0
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3.0
2.0
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3.0
Frequency (GHz)
Frequency (GHz)
2
Specifications subject to change without notice.
n North America: Tel. (800) 366-2266
n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298
n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Visit www.macom.com for additional data sheetsand product information.
GaAs SPDT Switch, DC-3.0 GHz
SW-438
V 1.00
Return Loss vs. Freqency Over Temperature
35
30
25
+85°C
+25°C
20
15
-40°C
10
2.0
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3.0
Frequency (GHz)
Broadband Applications
(No DC Blocking Capacitors, -2.3 V Control)
Insertion Loss vs. Frequency Over Temperature
Isolation vs. Frequency Over Temperature
1.0
60
55
0.9
+85°C
0.8
0.7
50
45
40
35
30
25
20
+25°C
0.6
-40°C
0.5
-40°C
0.4
0.3
0.2
0.1
0.0
+25°C
+85°C
0.0
0.5
1.0
1.5
2.0
2.5
3.0
0.0
0.5
1.0
1.5
Frequency (GHz)
2.0
2.5
3.0
Frequency (GHz)
Return Loss vs. Frequency Over Temperature
35
30
25
+85°C
20
+25°C
-40°C
15
10
0.0
0.5
1.0
1.5
2.0
2.5
3.0
Frequency (GHz)
3
Specifications subject to change without notice.
n North America: Tel. (800) 366-2266
n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298
n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Visit www.macom.com for additional data sheetsand product information.
GaAs SPDT Switch, DC-3.0 GHz
SW-438
V 1.00
SOT-363 (SC-70) Plastic Package
Dimen-
sion
Measurement (mm)
Min.
—
Nom.
—
Max.
A
A1
A2
b
1.10
0.10
1.00
0.30
0.22
0
—
0.70
0.15
0.08
0.90
—
c
—
D
2.00 basic
0.65 basic
2.10 basic
1.25 basic
0.42 ref.
e
E
E1
L
Note: See JEDEC MO-203 VAR AB for
Additional dimensions and tolerances.
D
A
PIN
e e
6
E1
E
L
PIN
1
c
A
A1
A2
b
Specifications subject to change without notice.
n North America: Tel. (800) 366-2266
n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298
n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Visit www.macom.com for additional data sheetsand product information.
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