Preliminary Data Sheet
2.1
FMS2017QFN
2.4GHz DPDT GaAs Single-Band WLAN Switch
Features:
3x3x0.9mm Packaged pHEMT Switch
Suitable for Single-band WLAN 802.11b/g
Applications
♦
Excellent low control voltage performance
♦
Very low Insertion loss typ. 0.6dB at 2.5GHz
♦
High isolation typ. 23dB at 2.5GHz
♦
Filtronic Advanced GaAs pHEMT Technology
♦
♦
Functional Schematic
V4
TX / RF1
V3
ANT1
RF3
ANT2
RF4
V1
RX / RF2
V2
Description and Applications:
The FMS2017QFN is a low loss, single band Gallium Arsenide antenna diversity switch designed for
use in Wireless LAN applications. The die is fabricated using the Filtronic FL05 0.5µm switch process
technology that offers leading edge performance, optimised for switch applications.
The FMS2017QFN is designed for use in 802.11b/g WLAN modules.
Electrical Specifications:
Parameter
Insertion Loss (All Paths)
Isolation (All Paths)
Return Loss
P0.1dB
2nd Harmonic Level
3rd Harmonic Level
Switching speed
(T
AMBIENT
= 25°C,V
ctrl
= 0V/(2.4V,+3.3V), Z
IN
= Z
OUT
= 50Ω)
Conditions
2.5GHz, Small Signal
2.5GHz, Small Signal
2.5GHz, Small Signal
2.5GHz Control Voltage 3.0V
2.4GHz, Pin = 32dBm, Vctrl =2.4V
2.4GHz, Pin = 32dBm, Vctrl =2.4V
Vctrl=2.4V, Pin=20dBm
Min
Typ
0.6
23
20
>33
-65
-65
20
Max
Units
dB
dB
dB
dBm
dBc
dBc
nS
Note:
External DC blocking capacitors are required on all RF ports (typ: 47pF)
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
2.1
FMS2017QFN
Absolute Maximum Ratings:
Parameter
Max Input Power
Control Voltage
Operating Temperature
Storage Temperature
Symbol
Pin
Vctrl
Toper
Tstor
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
1
2
3
4
5
6
V1
High
Low
Low
Low
Low
High
V2
Low
High
Low
Low
High
Low
V3
Low
Low
High
Low
Low
High
V4
Low
Low
Low
High
High
Low
RX
ANT1
Insertion Loss
Isolation
Isolation
Isolation
Isolation
Insertion Loss
RX
ANT2
Isolation
Insertion Loss
Isolation
Isolation
Insertion Loss
Isolation
TX
ANT2
Isolation
Isolation
Insertion Loss
Isolation
Isolation
Insertion Loss
TX
ANT1
Isolation
Isolation
Isolation
Insertion Loss
Insertion Loss
Isolation
General Test Conditions:
Bias Voltages
Port Impedances
Off arm termination
LOW = 0V to 0.2V
HIGH +2.4V to +3.3V
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
2.1
FMS2017QFN
Typical Measured Performance on Evaluation Board (De-Embedded):
(Measurement Conditions V
CTRL
=3V, 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
FMS2017QFN DE EMBEDDED INSERTION LOSS
1
1.5
2
Frequency (GHz)
2.5
3
-15
-17.5
-20
-22.5
-25
dB
-27.5
-30
-32.5
-35
-37.5
-40
0.5
1
FMS2017QFN ISOLATION
1.5
2
Frequency (GHz)
2.5
3
-10
-12.5
-15
-17.5
-20
-22.5
dB
-25
-27.5
-30
-32.5
-35
-37.5
-40
0.5
1
FMS2017QFN RETURN LOSS
1.5
2
Frequency (GHz)
2.5
3
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) 850 5790
Fax: +1 (408) 850 5766
Email: sales@filcsi.com
Website: www.filtronic.co.uk/semis
Preliminary Data Sheet
2.1
FMS2017QFN
Pad Layout:
V4
TX
RF1
V3
Pin Number
1
Description
N/C
ANT1 / RF3
N/C
V1
RX / RF2
V2
N/C
ANT2 / RF4
N/C
V3
Tx / RF1
V4
GND
Pin 1
12
11
10
9
2
3
4
ANT1
RF3
2
3
4
PADDLE
7
5
6
ANT2
RF4
5
6
7
8
9
10
11
V1
RX
RF2
V2
12
PADDLE
*View from the top of the package
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) 850 5790
Fax: +1 (408) 850 5766
Email: sales@filcsi.com
Website: www.filtronic.co.uk/semis
Preliminary Data Sheet
2.1
FMS2017QFN
Evaluation Board:
V4, GND, V3
RF1/TX
BOM
Label
C1
C2
Component
Capacitor, 100pF, 0603
Capacitor, 47pF, 0402
Preferred evaluation board material is 0.25
mm thick ROGERS RT4350. All RF tracks
should be 50 ohm characteristic
C2
C2
C2
C2
C2
C1 C1
BOARD
C2
C2
C2
impedance.
Absolute placement of
critical.
RF3/ANT1
C1 C1
RF4/ANT2
surface mount de-coupling capacitors is not
RF2/RX
V1, GND, V2
Evaluation Board De-Embedding Data (Measured):
0
-0.1
-0.2
-0.3
-0.4
dB
FMS2017QFN CAL BOARDS INSERTION LOSS
-15
-17.5
-20
-22.5
-25
-27.5
dB
-30
-32.5
-35
-37.5
-40
-42.5
-45
FMS2017QFN CAL BOARDS RETURN LOSS
-0.5
-0.6
-0.7
-0.8
-0.9
-1
0.5
1
1.5
2
Frequency (GHz)
2.5
3
0.5
1
1.5
2
Frequency (GHz)
2.5
3
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) 850 5790
Fax: +1 (408) 850 5766
Email: sales@filcsi.com
Website: www.filtronic.co.uk/semis
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