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Электронный компонент: SW-488

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PRELIMINARY INFORMATION
2 V Dual-Mode WCDMA & Dual-Band GSM/DCS Switch
SW-488
VER 1.
0.5 2.0 GHz
Rev 1.2
The Preliminary Specifications Data Sheet Contains Typical Electrical Specifications Which May Change Prior to Final Introduction
.
M/A-COM, Inc.
1
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
Features
GSM Power Handling with +2.0 V Control
Voltage
Low Power Consumption. Less than 1
A
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












GND
VDD
BS
TXS
PRXON
ANT2
GND
GRX
GND
GTX
DRX
DRXS
GND
DTX
GND
GND
WCDMA
GND
ANT1
GND
Decoder
2V Control, Dual -Mode WCDMA & Dual-Band GSM/DCS Tx/Rx Switch
SW-488
V1.2
The Preliminary Specifications Data Sheet Contains Typical Electrical Specifications Which May Change Prior to Final Introduction
.
M/A-COM, Inc.
2
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
ELECTRICAL CHARACTERISTICS:
Test Conditions: VDD = 2.5V, Vctrl =2.0V, T
A
= +25
C

Mode
Specifications
Freq. (MHz)
Units
Min.
Typ.
Max.
ANT2 -> GSM RX
ANT1 -> UMTS Tx
ANT1 -> UMTS Rx
Insertion Loss
Insertion Loss
Insertion Loss
925 -960
1920-1980
2110-2170
dB
dB
dB
0.54
0.65
0.7
0.6
0.7
0.75
0.7
0.9
0.95
Isolation ANT1 to DCS Tx
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
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
22
15
30
30
30
30
30
30
15
22
15
30
30
30
30
30
30
15
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
25
30
30
30
30
25
30
30
30
30
25
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
30
30
30
30
20
30
30
30
30
20
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
2V Control, Dual -Mode WCDMA & Dual-Band GSM/DCS Tx/Rx Switch
SW-488
V1.2
The Preliminary Specifications Data Sheet Contains Typical Electrical Specifications Which May Change Prior to Final Introduction
.
M/A-COM, Inc.
3
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

Pin Configuration
Pin No.
Pin Name
Description
1
ANT2
GSM ANT Port
2
GND
RF Ground
3
GRX
GSM Rx Port
4
GND
RF Ground
5
GTX
GSM Tx Port
6
GND
Decoder GND
7
VDD
Decoder Vdd
8
BS
Control 1
9
TXS
Control 2
10
PRXON
Control 3
11
GND
RF Ground
12
DCS TX
DCS Tx Port
13
GND
RF Ground
14
DCSRX_S
DCS Rx Shunt
15
DCSRX
DCS Rx Port
16
GND
RF Ground
17
ANT 1
WCDMA/DCS ANT
18
GND
RF Ground
19
WCDMA
WCDMA Port
20
GND
RF Ground
21
GND
Paddle

Truth Table
BS
TXS
PRXON
MODE
0
0
0
GSM RX ANT2
WCDMA ANT1
0
1
0
GSM TX ANT2
1
1
0
DCS TX ANT1
1
0
0
DCS RX ANT1




Logic Level
Voltage Level
VLo "0"=
0 V
VHi "1"=
2.5 V

Block Diagram







GND
VDD
BS
TXS
PRXON
ANT2
GND
GRX
GND
GTX
DRX
DRXS
GND
DTX
GND
GND
WCDMA
GND
ANT1
GND
Decoder
2V Control, Dual -Mode WCDMA & Dual-Band GSM/DCS Tx/Rx Switch
SW-488
V1.2
The Preliminary Specifications Data Sheet Contains Typical Electrical Specifications Which May Change Prior to Final Introduction
.
M/A-COM, Inc.
4
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
Sample Board Schematic






























External Circuitry Parts List (Note: Values of external elements not final)


Ref. Designation
Value
Purpose
C1
22 pF
DC Block
C2
22 pF
DC Block
C3
22 pF
DC Block
C4
22 pF
DC Block
C5
4.7 pF
RF Shunt
C6
22 pF
DC Block
C7
22 pF
DC Block
C8
22 pF
DC Block
WCDMA
ANT1
C7
C8
VDD
BS
TXS
PRXON
DRX
DTX
C4
C5
C6
ANT2
GRX
GTX
C1
C2
C3
Decoder
2V Control, Dual -Mode WCDMA & Dual-Band GSM/DCS Tx/Rx Switch
SW-488
V1.2
The Preliminary Specifications Data Sheet Contains Typical Electrical Specifications Which May Change Prior to Final Introduction
.
M/A-COM, Inc.
5
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

S W - 4 8 8 H a r m o n i c s a t t h e D C S T X P o r t v e r s u s P i n
V d d = 2 . 5 V ; V c o n t r o l = 2 . 5 V
- 7 0
- 6 0
- 5 0
- 4 0
- 3 0
- 2 0
- 1 0
0
2 6
2 7
2 8
2 9
3 0
3 1
3 2
3 3
P i n ( d B m )
dBm
D C S 2 H
D C S 3 H
S W - 4 8 8 H a r m o n i c s a t t h e G S M T X P o r t v e r s u s P i n
V d d = 2 . 5 V ; V c o n t r o l = 2 . 5 V
- 7 0
- 6 0
- 5 0
- 4 0
- 3 0
- 2 0
- 1 0
0
2 8
2 9
3 0
3 1
3 2
3 3
3 4
3 5
P i n ( d B m )
dBm
G S M 2 H
G S M 3 H
S W - 4 8 8 H a r m o n i c s a t t h e W C D M A P o r t v e r s u s P i n
V d d = 2 . 5 V ; V c o n t r o l = 2 . 5 V
- 7 0
- 6 0
- 5 0
- 4 0
- 3 0
- 2 0
- 1 0
0
2 4
2 5
2 6
2 7
2 8
2 9
3 0
P i n ( d B m )
dBm
W C D M A 2 H
W C D M A 3 H
2V Control, Dual -Mode WCDMA & Dual-Band GSM/DCS Tx/Rx Switch
SW-488
V1.2
The Preliminary Specifications Data Sheet Contains Typical Electrical Specifications Which May Change Prior to Final Introduction
.
M/A-COM, Inc.
6
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
4 mm FQFP-N, 20-Lead

Measurement (mm)
Dimension
Min.
Nom.
Max.
A
A1
A2
A3
b
D
D1
D2
e
E
E1
E2
L
0.80
0
0
0.18
0.75
0.75
0.35
0.90
0.02
0.65
0.25 ref.
0.23
4.00 basic
3.75 basic
1.70
0.50 basic
4.00 basic
3.75 basic
1.70
0.55
1.00
0.05
1.00
0.30
2.25
2.25
0.75
Note: See JEDEC MO-220A VGGD-1 for additional dimensional and
tolerance information


E2
20 x b
e
4 x e
L
e
4 x e
D2
D
E
E1
D1
A
A2
A1
A3