Preliminary Data Sheet
2.2
FMS2020QFN
GaAs Multi-Purpose Wide Band SPDT Switch
Features:
♦
♦
♦
♦
♦
♦
3x3x0.9mm Packaged pHEMT Switch
Suitable for L, S, and C-band digital
cellular, cordless telephony and WLAN
applications
High isolation, 25dB typ at 2.5GHz
Low insertion loss, 0.5dB typ at 2.5GHz
Low insertion loss, 1.0dB typ at 6GHz
P0.1dB > 38dBm at 2GHz
Functional Schematic
ANT
V1
V2
RF1
RF2
Description and Applications:
The FMS2020QFN is a low loss, high power and linear single pole dual throw Gallium Arsenide antenna
switch. The die is fabricated using the Filtronic FL05 0.5µm switch process technology, which offers leading
edge performance optimised for switch applications. The FMS2020QFN is designed for use in L, S, and C
band wireless applications and WLAN access points where high linearity switching is required.
Electrical Specifications:
Parameter
(T
AMBIENT
= 25°C,V
ctrl
= 0V/2.5V, Z
IN
= Z
OUT
= 50Ω)
Test Conditions
0.5 – 1.0 GHz
1.0 – 2.0 GHz
Min
Typ
0.4
0.45
0.55
0.65
0.75
0.95
23
18
30
25
18
>38
>38
>37
>33
<-70
<-70
<0.3
<1.0
<10
Max
Units
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dBm
dBm
dBm
dBm
dBc
dBc
µs
µs
µA
Insertion Loss
2.0 – 3.0 GHz
3.0 – 4.0 GHz
4.0 – 5.0 GHz
5.0 –6.0 GHz
Return Loss
0.5 – 2.5 GHz
2.5 – 5.0 GHz
0.5 – 1.0 GHz
1.0 – 2.5 GHz
2.5 – 6.0 GHz
1.0 GHz
Isolation
Input power at 0.1dB compression point
2.0 GHz
2.5 GHz
6.0 GHz
2nd Harmonic Level
3rd Harmonic Level
Switching speed : T rise, T fall
T on, T off
Control Current
1 GHz, Pin = +35 dBm, 100% Duty Cycle
1 GHz, Pin = +35 dBm, 100% Duty Cycle
10% to 90% RF and 90% to 10% RF
50% control to 90% RF and 50% control to 10% RF
+35dBm RF input @1GHz
Note:
External DC blocking capacitors are required on all RF ports (typ: 100pF)
All unused ports terminated in 50Ω.
1
Preliminary specifications subject to change without notice
Filtronic Compound Semiconductors Ltd
Contact Details (UK): Tel: +44 (0) 1325 301111 Fax: +44 (0) 1325 306177 Email: sales@filcs.com
Contact Details (USA): Tel: +1 (408) 850-5790
Fax: +1 (408) 850-5766
Email:
sales@filcsi.com
Website: www.filtronic.co.uk/semis
Preliminary Data Sheet
2.2
FMS2020QFN
Absolute Maximum Ratings:
Parameter
Max Input Power
Control Voltage
Operating Temperature
Storage Temperature
Symbol
Pin
V ctrl
T oper
T stor
Absolute Maximum
+38dBm
+5V
-40°C to +100°C
-55°C to +150°C
Note:
Exceeding any one of these absolute maximum ratings may cause permanent damage to the device.
Truth Table:
Switch
State
(A)
(B)
VC1
HIGH
LOW
VC2
LOW
HIGH
ANT– RF1
Insertion Loss
Isolation
ANT– RF2
Isolation
Insertion Loss
General Test Conditions:
Bias Voltages
Port Impedances
Off arm termination
LOW = 0V to 0.2V
HIGH +2.5V to +5V
50Ω
50Ω
2
Preliminary specifications subject to change without notice
Filtronic Compound Semiconductors Ltd
Contact Details (UK): Tel: +44 (0) 1325 301111 Fax: +44 (0) 1325 306177 Email: sales@filcs.com
Contact Details (USA): Tel: +1 (408) 850-5790
Fax: +1 (408) 850-5766
Email:
sales@filcsi.com
Website: www.filtronic.co.uk/semis
Preliminary Data Sheet
2.2
FMS2020QFN
Typical Measured Performance on Evaluation Board (De-Embedded):
(Measurement Conditions V
CTRL
= 2.5V (high) & 0V (low), T
AMBIENT
= 25°C unless otherwise stated)
0
-0.1
-0.2
-0.3
-0.4
dB
-0.5
-0.6
-0.7
-0.8
-0.9
-1
0.5
FMS2020QFN INSERTION LOSS DC to 3 Ghz
0
-0.1
-0.2
-0.3
-0.4
-0.5
-0.6
-0.7
-0.8
-0.9
-1
-1.1
-1.2
-1.3
-1.4
-1.5
4.5
FMS2020QFN INSERTION LOSS 802 11a bands
dB
1
1.5
2
Frequency (GHz)
2.5
3
5
Frequency (GHz)
5.5
6
-15
FMS2020QFN RF1 TO RF2 ISOLATION DC to 3Ghz
-10
FMS2020QFN RF1 TO RF2 ISOLATION 802 11a bands
-20
-15
dB
dB
-25
-20
-30
-25
-35
0.5
1
1.5
2
Frequency (GHz)
2.5
3
-30
4.5
5
Frequency (GHz)
5.5
6
-10
-15
-20
dB
FMS2020QFN RETURN LOSS DC to 3Ghz
-10
-15
-20
dB
-25
-30
-35
-40
FMS2020QFN RETURN LOSS 802 11a bands
-25
-30
-35
-40
0.5
1
1.5
2
Frequency (GHz)
2.5
3
4.5
5
Frequency (GHz)
5.5
6
3
Preliminary specifications subject to change without notice
Filtronic Compound Semiconductors Ltd
Contact Details (UK): Tel: +44 (0) 1325 301111 Fax: +44 (0) 1325 306177 Email: sales@filcs.com
Contact Details (USA): Tel: +1 (408) 988 1845
Fax: +1 (408) 970 9950
Email:
sales@filcsi.com
Website: : www.filtronic.co.uk/semis
Preliminary Data Sheet
2.2
FMS2020QFN
Pad Layout:
V1
ANT
V2
Pin Number
Description
N/C
N/C
RF1
N/C
N/C
N/C
RF2
N/C
N/C
V2
ANT RF
V1
GND
Pin 1
12
11
10
9
1
2
3
4
2
RF1
3
4
PADDLE
8
7
RF2
5
6
7
8
9
10
11
5
6
*View from the top of the package
12
PADDLE
QFN 12 Lead 3*3 Package Outline:
4
Preliminary specifications subject to change without notice
Filtronic Compound Semiconductors Ltd
Contact Details (UK): Tel: +44 (0) 1325 301111 Fax: +44 (0) 1325 306177 Email: sales@filcs.com
Contact Details (USA): Tel: +1 (408) 988 1845
Fax: +1 (408) 970 9950
Email:
sales@filcsi.com
Website: : www.filtronic.co.uk/semis
Preliminary Data Sheet
2.2
FMS2020QFN
Evaluation Board:
BOM
Label
C3,C4
C1,C2
C5,C6
Component
Capacitor, 470pF, 0603
Capacitor, 100pF, 0402
Capacitor, 47pF, 0402
Preferred evaluation board material is 0.25 mm thick
BOARD
ROGERS RT4350. All RF tracks should be 50 ohm
characteristic impedance.
Evaluation Board De-Embedding Data (Measured):
0
-0.1
-0.2
-0.3
-0.4
dB
FMS2020QFN CAL BOARD INSERTION LOSSES
-10
-12.5
-15
-17.5
-20
-22.5
dB
-25
-27.5
-30
-32.5
-35
-37.5
-40
FMS2020QFN CAL BOARD MATCH
-0.5
-0.6
-0.7
-0.8
-0.9
-1
0.5
1
1.5
2
2.5
3
3.5
4
Frequency (GHz)
4.5
5
5.5
6
0.5
1
1.5
2
2.5
3
3.5
4
Frequency (GHz)
4.5
5
5.5
6
5
Preliminary specifications subject to change without notice
Filtronic Compound Semiconductors Ltd
Contact Details (UK): Tel: +44 (0) 1325 301111 Fax: +44 (0) 1325 306177 Email: sales@filcs.com
Contact Details (USA): Tel: +1 (408) 988 1845
Fax: +1 (408) 970 9950
Email:
sales@filcsi.com
Website: : www.filtronic.co.uk/semis
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