M A COM SW-488TR, SW-488TR-3000, SW-488SMB Datasheet
PRELIMINARY INFORMATION
VDD
TXS
GND WCDMA
GND ANT1 GND
Decoder
2 V Dual-Mode WCDMA & Dual-Band GSM/DCS Switch SW-488
VER 1.
0.5 – 2.0 GHz
Rev 1.2
Features
• GSM Power Handling with +2.0 V Control
Voltage
Low Power Consumption. Less than 1µA
•
current in Receive mode.
• Integrated Decoder.
• Leadless 4 x 4mm FQFP -N, 20 Pin Package.
• Low Insertion Loss, 0.3 dB in GSM Transmit
mode.
Description
The M/A-COM SW-488 is a GaAs monolithic
switch in a low cost, FQFP -N, surface mount plastic
package. The SW-488 is ideally suited for
applications where very low power consumption,
high power handling, and low cost are required. The
SW-488 includes an integrated decoder. The switch
offers GSM power handling with below +2.5V
control voltage. The supply voltage VDD should be
connected to the highest available voltage.
The SW-488 is fabricated using a new 0.5-micron
gate length GaAs pHEMT process. The process
features full chip passivation for increased
performance and reliability. This switch is designed
for Dual Mode WCDMA/GSM/DCS handsets
where the phone needs to be able to simultaneously
receive a WCDMA and GSM signal.
Functional Schematic
Ordering Information
Part Number Description
SW-488TR SW-488 on 1000 Piece Tape and Reel
SW-488TR-3000 SW-488 on 3000 Piece Tape and Reel
SW-488SMB SW-488 Sample Test Board
* If specific reel size is required, consult factory for part number
assignment
ANT2
GND
GRX
GND
GTX
GND
DRX
DRXS
GND
DTX
GND
BS
PRXON
The Prelim inary Specifications Data Sheet Contains Typical Electrical Specifications Which May Change Prior to Final Introduction.
M/A-COM, Inc.
North America: Tel. (800) 366-2266 ♦ Asia/Pacific: Tel. +81 3 3263-8761 ♦ Europe: Tel. +44 (1344) 869 -595
Fax (800) 618-8883 Fax +81 3 3263-8769 Fax +44 (1344) 300 -020
1
2V Control, Dual -Mode WCDMA & Dual -Band GSM/DCS Tx/Rx Switch SW -488
ELECTRICAL CHARACTERISTICS: Test Conditions: VDD = 2.5V, Vctrl =2.0V, T
= +25 °C
A
V1.2
Mode Specifications Freq. (MHz) Units Min. Typ. Max.
ANT2 -> GSM RX
ANT1 -> UMTS Tx
ANT1 -> UMTS Rx
Isolation ANT1 to DCS Tx
Insertion Loss
Insertion Loss
Insertion Loss
Isolation ANT2 to GSM Tx
Isolation UMTS to DCS Rx
Isolation UMTS to GSM Rx
Isolation UMTS to GSM Tx
Isolation DCS Tx to DCS Rx
Isolation DCS Tx to GSM Rx
Isolation GSM Tx to DCS Rx
Isolation GSM Tx to GSM Rx
925 -960
1920-1980
2110-2170
1710-1785
880 – 915
1920 –1980
1920 –1980
1920 –1980
1710 – 1785
1710 – 1785
880 – 915
880 - 915
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
0.54
0.65
0.7
22
15
30
30
30
30
30
30
15
0.6
0.7
0.75
22
15
30
30
30
30
30
30
15
0.7
0.9
0.95
22
15
30
30
30
30
30
30
15
ANT1 -> DCS RX Insertion Loss 1805 -1880 dB 0.74 0.8 0.9
Isolation ANT1 to DCS Tx
Isolation ANT2 to GSM Tx
Isolation DCS Tx to DCS Rx
Isolation DCS Tx to GSM Rx
Isolation GSM Tx to DCS Rx
Isolation GSM Tx to GSM Rx
1710 – 1785
880 – 915
1710 – 1785
1710 – 1785
880 – 915
880 - 915
dB
dB
dB
dB
dB
dB
20
10
20
30
30
30
20
10
20
30
30
30
20
10
20
30
30
30
ANT2 -> GSM TX Insertion Loss 880 – 915 dB 0.24 0.3 0.4
Isolation GSM Tx to UMTS
Isolation GSM Tx to DCS Rx
Isolation GSM Tx to GSM Rx
Isolation DCS Tx to DCS Rx
Isolation DCS Tx to GSM Rx
880 – 915
880 – 915
880 – 915
1710 – 1785
1710 – 1785
dB
dB
dB
dB
dB
30
30
30
30
30
30
25
25
25
30
30
30
30
30
30
ANT1 -> DCS TX Insertion Loss 1710 –1785 dB 0.54 0.6 0.7
Isolation DCS Tx to UMTS
Isolation DCS Tx to DCS Rx
Isolation DCS Tx to GSM Rx
Isolation GSM Tx to DCS Rx
Isolation GSM Tx to GSM Rx
1710 –1785
1710 –1785
1710 –1785
880 – 915
880 – 915
dB
dB
dB
dB
dB
20
20
20
30
30
30
30
30
30
30
30
30
30
30
30
2nd Harmonics See attached data dBc -84 -80 -70
3rd Harmonics See attached data dBc -79 -76 -65
Supply Voltage Volts 2.0 2.5 4.0
High Control Voltages Volts 2.0 2.5 4.0
Low Control Voltages Volts -0.2 0 0.2
1. DC blocking capacitors are required on all RF and shunt ports.
2. All impedances are 50 ohms
The Preliminary Specifications Data Sheet Contains Typical Electrical Specifications Which May Change Prior to Final Introduction.
M/A-COM, Inc.
North America: Tel. (800) 366-2266 ♦ Asia/Pacific: Tel. +81 3 3263-8761 ♦ Europe: Tel. +44 (1344) 869 -595
Fax (800) 618-8883 Fax +81 3 3263-8769 Fax +44 (1344) 300 -020
2
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