Preliminary Data Sheet
1.0
FMS2002QFN ES1
SP3T Reflective pHEMT MMIC Switch
Description
The FMS2002QFN is a linear high power Single-Pole Three-Throw
MMIC Antenna Switch designed for use in Dual-band handsets
GSM900 and GSM1800/1900 combinations. The switch is designed
with one antenna port that can be routed to any one of the three RF
ports
.
Features
·
·
·
·
·
·
Low insertion loss (0.5dB @ 900 MHz)
Operation down to 2V control
3 control lines. Single positive voltage supply
Low harmonics (Typical -73dBc at Pin=+34.5dBm)
High Isolation (30 dB @ 900 MHz)
Filtronic Advanced GaAs pHEMT Technology
(at 25C°, [V
ctrl
0,+2.7V], 50 Ohm system, under CW )
Condition
Min.
Typ.
Max.
Unit
1
0.45
dB
2
0.55
dB
3
0.5
dB
1
35
dB
2
26
dB
1
-25
dB
2
-18
dB
3
-74
dBc
3
-73
dBc
3
2.9
mA
3
3.2
mA
Electrical Characteristics
Parameter
Insertion Loss
Isolation –
RF – Ant on.
S11
S11
Harmonics
Symbol
IL
ISO
S11
S11
2fo
3fo
I
lkTx
I
lkRx
Leakage Current - Tx
Leakage Current – Rx
Condition
1
Small signal, DC – 1GHz, Vctrl = 2.7V/0V
2
Small signal, 1-2 GHz, Vctrl = 2.7V/0V
3
Input power=34.5dBm, EGSM Tx 880-915MHz, Vctrl=2.7V/0V
GaAs MMIC’s are ESD sensitive devices. Special handling precautions are required.
Truth Table
Operation
RF1-Ant
RF2-Ant
RF3-Ant
Vctrl 1
HIGH
0
0
Control Voltage
Vctrl 2
0
HIGH
0
Vctrl 3
0
0
HIGH
Control values
Control
High
Low
Min
-
-
Typ.
2.7
0.0
Max
-
-
Unit
V
V
Preliminary specifications subject to change without notice
Filtronic Compound Semiconductors
(
UK)
Contact Details: Tel: +44 (0) 1325 301111 Fax: +44 (0) 1325 306177 Email:
sales@filcs.com
(USA) Contact Details: Tel: 001 (408) 988 1845 Fax: 001 (408) 970 9950 Email:
sales@filss.com
World Website:
www.filcs.com
Preliminary Data Sheet
1.0
FMS2002QFN ES1
Typical Jig Measurements
Harmonic Rejection vs. Control Voltage
2nd Harmonic
-60
-62
-64
-66
-68
-70
-72
-74
-76
1.7
1.9
2.1
2.3
2.5
2.7
Control Voltage (V)
2.9
1.8
2
3rd Harmonic
Harmonic Rejection (dBc)
Pin = 34.5 dBm @ 900 MHz
Insertion Loss vs. Frequency
0
-0.1
-0.2
Insertion Loss (dB)
-0.3
-0.4
-0.5
-0.6
-0.7
-0.8
-0.9
-1
0.3
0.8
1.3
Frequency (GHz)
Isolation vs. Frequency
0
-5
Isolation (dB)
-15
-25
-35
-45
0.3
0.8
1.3
Frequency (GHz)
1.8
2
Preliminary specifications subject to change without notice
Filtronic Compound Semiconductors
(
UK)
Contact Details: Tel: +44 (0) 1325 301111 Fax: +44 (0) 1325 306177 Email:
sales@filcs.com
(USA) Contact Details: Tel: 001 (408) 988 1845 Fax: 001 (408) 970 9950 Email:
sales@filss.com
World Website:
www.filcs.com
Preliminary Data Sheet
1.0
FMS2002QFN ES1
Connection on Board*
RF1
RF3
V3
RF2
V1
ANT
V2
SP3T Bonding Configuration
Pad Number
1
2
3
4
5
6
7
RF input port 1
RF input port 2
DC Control line 2
RF input port 3
DC Control line 1
Antenna
DC Control line 3
Port
RF 1
RF 2
Vctrl 2
RF 3
Vctrl 1
ANT
Vctrl 3
Symbol
*
RF4, RF 5, V4 and V5 lines are unused.
Bonding Pad Layout
ANT
Pin 11
Pin
10
Pin
12
V3
Pin 9
RF3
Pin 8
Pin 1
V1
Pin 2
RF1
Pin 6
V2
Pin 5
RF2
Suggested Application Board Layout
PCB material: FR4
90 deg SMA connector
0603 100pF surface mount ceramic capacitors
All transmission lines 50 ohm
90 deg SMA connectors
90 deg SMA connectors
0603 100pF surface mount ceramic capacitors
90 deg SMA connector
Generic SPDT, 3T and 4T Evaluation Board Layout
Preliminary specifications subject to change without notice
Filtronic Compound Semiconductors
(
UK)
Contact Details: Tel: +44 (0) 1325 301111 Fax: +44 (0) 1325 306177 Email:
sales@filcs.com
(USA) Contact Details: Tel: 001 (408) 988 1845 Fax: 001 (408) 970 9950 Email:
sales@filss.com
World Website:
www.filcs.com
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