SPDT High Isolation Terminated Switch
0.01 - 3.0 GHz
Rev. V4
MASWSS0178
1
1
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For further information and support please visit:
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1
Features
Positive Voltage Control: 0 / +5 V
High Isolation: 55 dB @ 0.9 GHz
50 dB @ 1.9 GHz
50 Ω Internal Terminations
Low Insertion Loss: 0.6 dB @ 0.9 GHz
0.7 dB @ 1.9 GHz
Lead-Free MSOP-8-EP Package
Halogen-Free “Green” Mold Compound
260°C Reflow Compatible
RoHS* Compliant Version of MASWSS0024
Description
The MASWSS0178 GaAs monolithic switch provides
high isolation in a lead-free, plastic surface mount
package.
The MASWSS0178 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.
M/A-COM Technology fabricates the MASWSS0178
using a 1.0-micron gate length MESFET process.
The process features full chip passivation for
performance and reliability.
Functional Schematic 2
Pin Configuration
Pin No. Function Pin No. Function
1 Control 1 5 RF Port 2
2 Control 2 6 Ground
3 RF Common 7 Ground
4 Ground 8 RF Port 1
Part Number
Package
MASWSS0178 Bulk Packaging
MASWSS0178TR-3000 3000 piece reel
MASWSS0178SMB Sample Board
Ordering Information 1
1. Reference Application Note M513 for reel size information.
Absolute Maximum Ratings 3,4
Parameter Absolute Maximum
Input Power (0.5 - 3.0 GHz)
3 V Control
5 V Control
+30 dBm
+33 dBm
Operating Voltage +8.5 Volts
Operating Temperature -40°C to +85°C
Storage Temperature -65°C to +150°C
3. Exceeding any one or combination of these limits may cause
permanent damage to this device.
4. M/A-COM Technology does not recommend sustained
operation near these survivability limits.
* Restrictions on Hazardous Substances, European Union Directive 2002/95/EC.
Pin 1
2. The exposed pad centered on the package bottom must be
connected to RF and DC ground.
SPDT High Isolation Terminated Switch
0.01 - 3.0 GHz
Rev. V4
MASWSS0178
2
2
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macom.com for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
2
Electrical Specifications: TA = 25°C, VC = 0 V / 5 V, Z0 = 50 Ω 5
Parameter Test Conditions Units Min. Typ. Max.
Insertion Loss
0.01 - 0.5 GHz
0.5 - 1.0 GHz
1.0 - 2.0 GHz
2.0 - 3.0 GHz
dB
—
—
—
—
0.5
0.6
0.7
0.75
—
0.7
0.8
—
Isolation
0.01 - 0.5 GHz
0.5 - 1.0 GHz
1.0 - 2.0 GHz
2.0 - 3.0 GHz
dB
—
51
44
—
59
57
53
43
—
—
—
—
Return Loss
0.01 - 0.5 GHz6
0.5 - 1.0 GHz
1.0 - 2.0 GHz
2.0 - 3.0 GHz
dB
—
—
—
—
20
20
20
20
—
—
—
—
Input IP2 2-Tone, 900 MHz, 5 MHz spacing dBm — 83 —
Input IP3 2-Tone, 900 MHz, 5 MHz spacing dBm — 43 —
Input P1dB Compression VC = 0 V/5.0 V, 1 GHz
VC = 0 V/3.0 V, 1 GHz dBm —
—
29
17.5
—
—
Trise, Tfall 10% to 90% RF & 90% to 10% RF ns — 24 —
Ton, Toff 50% of VC to 10% / 90% RF ns — 15 —
Transients In-band mV — 12 —
Control Current VC = 5 V µA — 2 13
Handling Procedures
Please observe the following precautions to avoid
damage:
Static Sensitivity
Gallium Arsenide Integrated Circuits are sensitive
to electrostatic discharge (ESD) and can be
damaged by static electricity. Proper ESD control
techniques should be used when handling these
devices.
Truth Table
V1 V2 RFC-RF1 RFC-RF2
0 1 Off On
1 0 On Off
Logic Level Voltage Level
VLOW “0” 0 ± 0.2 V
VHIGH “1” 3.0 V to 8.0 V
5. External DC blocking capacitors are required on all RF ports (47 pF capacitors are recommended). Use larger value capacitors for lower
frequency operation (e.g. use 10,000 pF capacitors to optimize insertion and return loss at frequencies below 50 MHz).
6. Terminated return loss is governed by blocking capacitors internal to the device; see applications plot.
SPDT High Isolation Terminated Switch
0.01 - 3.0 GHz
Rev. V4
MASWSS0178
3
3
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macom.com for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
3
Typical Performance Curves
Return Loss Insertion Loss
Isolation
10
15
20
25
30
0.5 1.0 1.5 2.0 2.5 3.0
Frequency (GHz)
Return Loss (dB)
INPUT RETURN LOSS ("ON" STATE)
OUTPUT RETURN LOSS ("OFF" STATE)
0.0
0.2
0.4
0.6
0.8
1.0
0.0 0.5 1.0 1.5 2.0 2.5 3.0
F reque nc y (G H z)
Insertion Loss (dB)
0
20
40
60
80
0.0 0.5 1.0 1.5 2.0 2.5 3.0
F reque nc y (G H z)
Isolation (dB)
Lead-Free MSOP-8-EP†
† Reference Application Note M538 for lead-free solder reflow
recommendations
Meets JEDEC moisture sensitivity level 1 requirements.
Plating is 100% matte tin over copper.
SPDT High Isolation Terminated Switch
0.01 - 3.0 GHz
Rev. V4
MASWSS0178
4
4
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macom.com for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
4
Typical Performance Curves, Very Low Frequency, 10000 pF Blocking Capacitors
Applications Section
Return Loss vs. Frequency Insertion Loss vs. Frequency
-30.0
-25.0
-20.0
-15.0
-10.0
-5.0
0.0
0 0.1 0.2 0.3 0.4 0.5
Return Loss - Insertion Path (dB)
Return Loss - Termination (dB)
Frequency (GHz)
Isolation vs. Frequency
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
0 0.1 0.2 0.3 0.4 0.5
Isolation (dB)
Frequency (GHz)
0.0
0.5
1.0
1.5
2.0
0 0.1 0.2 0.3 0.4 0.5
Insertion Loss (dB)
Frequency (GHz)
SPDT High Isolation Terminated Switch
0.01 - 3.0 GHz
Rev. V4
MASWSS0178
5
5
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macom.com for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
5
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