Features
Functional Schematic
n Positive Voltage Control (0 / +5 V)
n High Isolation (53 dB typ. @ 0.9 GHz,
16
50 dB typ @ 1.9 GHz)
n 50-Ohm Internal Terminations
n Low Insertion Loss (0.6 dB typ. @ 0.9 GHz,
0.7 dB typ. @ 1.9 GHz)
n 4 mm FQFP-N 16-Lead Package
15
14
13
RF2
Description
The M/A-COM SW-475 GaAs monolithic switch provides
high isolation in a low-cost, plastic surface mount package.
The SW -475 is ideal for applications across a broad range
of frequencies including synthesizer switching, transmit /
receive switching, switch matrices and filter banks in
systems such as radio and cellular equipment, PCS, GPS,
and fiber optic modules.
RF1
1
12
2
11
3
10
4
9
RFC
SW-475
SPDT High Isolation Terminated Switch
0.5 - 3.0 GHz
V1
V2
5
6
7
8
M/A-COM fabricates the SW-475 using an 0.5-micron gate
length MESFET process. The process features full chip
passivation for performance and reliability.
PIN Configuration
Handling Procedures
Pin Function Description Pin Function Description
17
GND
RF ground
—
—
—
1
RF2
RF port
(pad)
16
GND
RF ground
2
GND
RF ground
15
GND
RF ground
Static Sensitivity
3
GND
RF ground
14
GND
RF ground
Gallium arsenide integrated circuits are ESD sensitive and
can be damaged by static electricity. Use proper ESD
precautions when handling these devices.
4
V1
Control 1
13
GND
RF ground
5
V2
Control 2
12
RF1
RF port
6
GND
RF ground
11
GND
RF ground
7
RFC
RF port
10
GND
RF ground
8
GND
RF ground
9
GND
RF ground
The following precautions should be observed to avoid
damage:
Truth Table
Mode
(Control)
V1
V2
RFC RF1
RFC RF2
Positive1
0
1
ON
OFF
Negative2
1
0
OFF
ON
1. External DC blocking capacitors required on all RF ports.
We recommend 47 pF.
2. 3.0 V < VC < 8.0 V.
Logic Level
Voltage Level
V LO “0” =
0 ± 0.2 V
V HIGH 1” =
V C ± 0.2 V
SPDT High Isolation, Terminated Switch, 0.5 - 3.0 GHz
SW-475
V 1.00
Electrical Specifications:
Parameter
Insertion Loss
Isolation
Return Loss
TA = 25 °C, VCTL = 0, 5.0 V (unless otherwise specified)
Test Conditions
Units
Min.
Typ.
Max.
0.5- 1 GHz
dB
0.6
0.7
1.0 - 2.0 GHz
dB
0.7
0.8
2.0 - 3.0 GHz
dB
0.75
0.9
0.5 - 1 GHz
dB
51
54
1.0 - 2.0 GHz
dB
48
52
2.0 - 3.0 GHz
dB
45
50
0.5 - 1 GHz
dB
15
20
1.0 - 2.0 GHz
dB
15
20
2.0 - 3.0 GHz
dB
15
20
Input IP2
2-Tone 900 MHz, 5 MHz spacing (V C = 5.0 V)
dBm
83
Input IP3
2-Tone 900 MHz, 5 MHz spacing (V C = 5.0 V)
dBm
43
TRISE, TFALL
10% to 90% RF & 90% to 10% RF
nS
24
TON, TOFF
50% of V C to 10 % / 90% RF
nS
15
Transients
V C = 5.0 V square wave, in-band
mV
12
1. DC blocking capacitors requires on all RF ports.
Absolute Maximum Ratings 1
Parameter
Absolute Maximum
Max Input Power (0.5 - 3.0 GHz)
3 V Control
+30 dBm
5 V Control
Operating Voltage
+33 dBm
Operating Temperature
+8.5 volts
-40 °C to +85 °C
Storage Temperature
-65 °C to +150 °C
1. Exceeding any one or combination of these limits may cause
permanent damage.
Specifications subject to change without notice.
n North America: Tel. (800) 366-2266, Fax (800) 618-8883
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 sheets and product information.
2
SPDT High Isolation, Terminated Switch, 0.5 - 3.0 GHz
SW-475
V 1.00
Typical Performance Curves
Return Loss Vs. Frequency
Insertion Loss Vs. Temperature
0.8
30
+85 °C
25
0.7
OUTPUT RETURN LOSS ("OFF" STATE)
+25 °C
0.6
20
-40 °C
INPUT RETURN LOSS ("ON" STATE)
15
0.5
10
0.4
0.5
1.0
1.5
2.0
2.5
3.0
0.5
1.0
1.5
2.0
2.5
3.0
FREQUENCY (GHz)
FREQUENCY (GHz)
Isolation Vs. Frequency Over
Temperature
65
60
+25 °C
55
+85 °C
-40 °C
50
0.5
1.0
1.5
2.0
2.5
3.0
FREQUENCY (GHz)
Specifications subject to change without notice.
n North America: Tel. (800) 366-2266, Fax (800) 618-8883
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 sheets and product information.
3
SPDT High Isolation, Terminated Switch, 0.5 - 3.0 GHz
SW-475
V 1.00
4-mm FQFP-N, 16-Lead (MLP)
Package
A
A2
D
D1
16
E E1
Dim
A3
A1
A
Min.
0.80
Measurement (mm)
Nom.
Max.
0.90
1.00
A1
0
0.02
0.05
1
A2
0.70
0.65
1.00
2
A3
3
b
0.23
0.28-
0.35
D
-
4.00 basic
-
D1
-
3.75 basic
-
D2
0.75
1.70
0.65 basic
2.25
16 x b
D2
e
e
4xe
L
0.20 ref.
E2
E
-
4.00 basic
-
E1
-
3.75 basic
-
E2
0.75
1.70
2.25
L
0.50 typ.
0.60 typ.
0.75 typ.
Note: See JEDEC MO-220A VGGC for additional dimensional and tolerance information.
e
4xe
Ordering Information
Part Number
Package
SW-475 PIN
4-mm FQFP-N 16-lead Plastic
Package
SW-475TR
Forward tape and reel1
SW-475TR-3000
3000 tape and reel1
SW-475SMB
Sample board
1. If you need a specific reel size, please consult the factory
for part number.
Specifications subject to change without notice.
n North America: Tel. (800) 366-2266, Fax (800) 618-8883
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 sheets and product information.
4