FMS2020-001
10W GaAs
Wideband
SPDT Switch
FMS2020-001
10W GaAs WIDEBAND SPDT SWITCH
Package: 3mmx3mm QFN
NOT FOR NEW DESIGNS
Product Description
The FMS2020-001 is a 10-Watt, low loss, single-pole, dual-throw, Gallium Arsenide
antenna switch. The die is fabricated using the RFMD FL05 0.5μm switch process
technology, which offers leading edge performance optimized for switch applica-
tions. The FMS2020-001 is designed for use in WiMax, L-, S-, and C-band wireless
applications and WLAN access points where high linearity switching is required.
Features
High Isolation: 25dB Typ. at
2.5GHz
Low Insertion Loss: 0.5dB
Typ. at 2.5GHz
Low Insertion Loss: 1.0dB
Typ. at 6GHz
P
1dB
42dBm at 5GHz
Optimum Technology
Matching® Applied
GaAs HBT
GaAs MESFET
InGaP HBT
SiGe BiCMOS
Si BiCMOS
SiGe HBT
GaAs pHEMT
Si CMOS
Si BJT
GaN HEMT
InP HBT
RF MEMS
LDMOS
ANT
V1
DE
RF2
RF1
FO
R
Parameter
Insertion Loss
NE
Min.
Specification
Typ.
0.4
0.6
0.75
18
16
29
25
18
41
39.5
38.5
>42
40.5
Δ0.5
>69
>66
-74
-77
<300
<800
1.5
W
Unit
dB
dB
dB
dB
dB
dB
dB
dB
dBm
dBm
dBm
dBm
dBm
%
dBm
dBm
dBc
dBc
ns
ns
3
μA
Max.
0.5
0.75
Electrical Specifications
NO
T
Return Loss
Isolation
27
22
P
IN
at 0.1dB Compression Point
P
IN
at 0.5dB Compression Point
EVM (Contribution Due to Switch)
OIP3
2nd Harmonic Level
3rd Harmonic Level
Switching Speed: T
RISE
, T
FALL
Switching Speed: T
ON
, T
OFF
Control Current
-69
-70
RF MICRO DEVICES®, RFMD®, Optimum Technology Matching®, Enabling Wireless Connectivity™, PowerStar®, POLARIS™ TOTAL RADIO™ and UltimateBlue™ are trademarks of RFMD, LLC. BLUETOOTH is a trade-
mark owned by Bluetooth SIG, Inc., U.S.A. and licensed for use by RFMD. All other trade names, trademarks and registered trademarks are the property of their respective owners. ©2006, RF Micro Devices, Inc.
DS100122
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
SI
GN
S
V2
1.0GHz
3.5GHz
5.0GHz
0.5GHz to 2.5GHz
2.5GHz to 5.0GHz
1.0GHz
2.5GHz
6.0GHz
1.0GHz
2.5GHz
5.0GHz
2.5GHz
Operates from a Single Posi-
tive Voltage
Less than 10μA Control Cur-
rent at 35dBm Input Power
WiMax
L-, S-, and C-band Digital Cel-
lular
WLAN Applications
Applications
Condition
T
AMBIENT
=25°C, V
CTRL
=0V/2.7V, Z
IN
=Z
OUT
=50Ω
5.0GHz
35dBm at 5GHz (OFDM WLAN 54)
1GHz
2GHz
1GHz, P
IN
=+35dBm, 100% duty cycle
1GHz, P
IN
=+35dBm, 100% duty cycle
10% to 90% RF and 90% to 10% RF
50% control to 90% RF and 50% control to 10%
RF
+20dBm RF input @ 3.8GHz
1 of 6
FMS2020-001
Absolute Maximum Ratings
1
Parameter
Maximum Input Power (P
IN
)
Control Voltage (V
CTRL
)
Operating Temperature (T
OPER
)
Maximum Junction Temperature
(T
JMAX
)
Storage Temperature (T
STOR
)
Rating
+41
+6
-40 to 85
125
-55 to 150
Unit
dBm
V
°C
°C
°C
Caution! ESD sensitive device.
Exceeding any one or a combination of the Absolute Maximum Rating conditions may
cause permanent damage to the device. Extended application of Absolute Maximum
Rating conditions to the device may reduce device reliability. Specified typical perfor-
mance or functional operation of the device under Absolute Maximum Rating condi-
tions is not implied.
RoHS status based on EUDirective2002/95/EC (at time of this document revision).
The information in this publication is believed to be accurate and reliable. However, no
responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any
infringement of patents, or other rights of third parties, resulting from its use. No
license is granted by implication or otherwise under any patent or patent rights of
RFMD. RFMD reserves the right to change component circuitry, recommended appli-
cation circuitry and specifications at any time without prior notice.
Truth Table
Switch State
A
B
VC1
High
Low
VC2
Low
High
DE
ANT - RF1
Insertion loss
Isolation
General Test Conditions
Bias Voltages
Port Impedances
Off-Arm Termination
Low=0V to 0.2V, High=2.5V to 5V
50Ω
50Ω
NO
T
2 of 6
FO
R
Note: External DC blocking capacitors are required on all RF ports (typ: 47pF). All unused ports terminated in 50Ω.
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
NE
W
SI
GN
S
ANT - RF2
Isolation
Insertion Loss
Notes:
At high powers, the dissipation in the switch can be significant and the resulting
thermal effects need to be taken in to account. The device should be mounted
with appropriate heat sinking to take this into account.
The maximum allowable junction temperature is T
JMAX
=125°C and for the thermal
calculation, the dissipation within the switch should be taken as
η
= 5.5%. This
should include the power input to the switch and anything reflected back from
an external mismatch.
The thermal resistance of the FET should be taken as R
TH
=70°C/W.
T
J
=T
OP
+P
IN
.
η
.
R
TH
, where T
J
<
T
JMAX
DS100122
FMS2020-001
Typical Measured Performance on Evaluation Board (De-embedded)
Measurement Conditions: V
CTRL
=2.5V (high) and 0V (low), T
AMBIENT
=25°C unless otherwise stated.
Insertion Loss vs Frequency
0. 0
-10
Isolation versus Frequency
-15
-0. 5
-20
(dB)
-1. 0
(dB)
1
2
3
( GHz)
4
5
6
-25
-1. 5
-35
-2. 0
-40
SI
GN
S
1
2
3
(GHz)
-30
4
5
6
Return Loss vs Frequency
0
Power Loss* vs Input Power
2. 0
-10
(dB)
-30
Var iable
S11
S22
W
NE
(dB)
-20
-40
DE
1. 5
1. 0
0. 5
0. 0
25. 0
6
27.5
30. 0
32.5
35.0
(dBm)
37.5
40. 0
1
2
3
(GHz)
4
5
-50
NO
T
DS100122
FO
R
Pow er Los s* =(Large S ignal Los s - S mall S ignal Loss )
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
3 of 6
FMS2020-001
Part Identification
Pad Layout
V1
ANT
V2
Pin 1
12
11
10
9
2
RF1
3
4
PADDLE
8
7
RF2
FO
R
NO
T
4 of 6
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
NE
QFN 12-Lead 3mmx3mm
W
5
6
Package Drawing
DE
SI
GN
S
Pin
1
2
3
4
5
6
7
8
9
10
11
12
Paddle
Description
NC
NC
RF1
NC
NC
NC
RF2
NC
NC
V2
ANT RF
V1
Ground
DS100122
FMS2020-001
Evaluation Board Layout
Bill of Materials
Label
C3, C4
C1, C2, C7
C5, C6
Board
W
NE
Insertion Loss vs Frequency
Preferred evaluation board material is 0.25mm thick ROGERS RT4350. All RF tracks should be 50Ω characteristic impedance.
FO
R
Evaluation Board De-embedding Data (Measured)
Return Loss vs Frequency
0
0.0
NO
T
-0.5
-1.0
( dB)
-30
Variab le
S 11
S 22
(dB)
-1.5
-40
-2.0
1
2
3
(GHz)
4
5
DE
Component
Capacitor, 470pF, 0603
Capacitor, 100pF, 0402
Capacitor, 47pF, 0402
-10
-20
6
-50
1
2
3
( GHz)
4
SI
GN
S
5
6
Tape and Reel
Tape and reel information on this material is in accordance with EIA-481-1 except where exceptions are identified.
DS100122
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
5 of 6
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