Skyworks Solutions, Inc. [978] 241-7000
Fax [978] 241-7906 Email sales@skyworksinc.com www.skyworksinc.com
1
Specifications subject to change without notice. 3/99A
GaAs IC Receive Diversity
T/R Switch DC2 GHz
Features
PDC Antenna Switch
Transmit to Main Antenna
Receive from Dual Antenna Ports
Operates with Positive, Negative or
Differential Voltages
Low DC Power Consumption
MSOP-8
AS149-59
Description
The AS149-59 is a GaAs MMIC T/R Switch with receive
diversity ideal for use in PDC handsets and low power
base stations. It can be operated with positive or negative
3 V or differential biasing for high linearity. The switch is
packaged in a low cost, miniature MSOP-8 package.
On Path
Parameter
1
Frequency
2
Min.
Typ.
Max.
Unit
T
X
to M-Ant.
Insertion Loss
3
DC1.0 GHz
0.35
0.5
dB
DC2.0 GHz
0.50
0.7
dB
R
X
to M-Ant. Iso.
DC1.0 GHz
23
26
dB
DC2.0 GHz
15
19
dB
R
X
to M-Ant.
Insertion Loss
DC1.0 GHz
0.65
0.8
dB
DC2.0 GHz
0.9
1.1
dB
T
X
to M-Ant. Iso.
DC1.0 GHz
15
18
dB
DC2.0 GHz
9
12
dB
R
X
to S-Ant. Iso.
DC1.0 GHz
20
23
dB
DC2.0 GHz
12
15
dB
R
X
to S-Ant.
Insertion Loss
DC1.0 GHz
0.5
0.6
dB
DC2.0 GHz
0.9
1.1
dB
T
X
to M-Ant. Iso.
DC1.0 GHz
20
24
dB
DC2.0 GHz
12
15
dB
VSWR
4
DC1.0 GHz
1.5:1
DC2.0 GHz
1.7:1
Electrical Specifications at 25C (-2.75, +2.75 V)
0.012 (0.30 mm)
PIN 1
PIN 1
INDICATOR
+ 0.006 (0.15 mm)
7.0
TYP.
0.038 (0.95 mm)
0.030 (0.75 mm)
0.017
(0.43 mm)
8.0
MAX.
0.028 (0.70 mm)
0.016 (0.40 mm)
0.007 (0.18 mm)
0.005 (0.12 mm)
0.006 (0.15 mm)
0.002 (0.05 mm)
- 0.002 (0.05 mm)
0.0256 (0.65 mm) TYP.
0.118 (3.00 mm)
0.004 (0.1 mm)
SQ.
0.193 (4.90 mm)
REF.
1. All measurements made in a 50
system, unless otherwise specified.
2. DC = 300 kHz.
3. Insertion loss changes by 0.003 dB/C.
4. Insertion loss state.
GaAs IC Receive Diversity T/R Switch DC2 GHz
AS149-59
2
Skyworks Solutions, Inc. [978] 241-7000
Fax [978] 241-7906 Email sales@skyworksinc.com www.skyworksinc.com
Specifications subject to change without notice. 3/99A
Frequency (GHz)
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0
0.5
1.5
0.75
0.25
1.0
1.25
1.75 2.0
Insertion Loss vs. Frequency
dB
R
X
to
M-Ant.
R
X
to
S-Ant.
T
X
to
M-Ant.
Frequency (GHz)
0
0.5
1.0
1.5
2.0
40
30
20
10
0
R
X
to M-Ant. Isolation vs. Frequency
dB
On Path:
T
X
to
M-Ant.
Frequency (GHz)
0
0.5
1.0
1.5
2.0
T
X
to M-Ant. and R
X
to S-Ant.
Isolation vs. Frequency
dB
On Path:
R
X
to
M-Ant.
50
40
30
20
10
0
Tx to M-Ant.
Rx to S-Ant.
Frequency (GHz)
0
0.5
1.0
1.5
2.0
40
30
20
10
0
R
X
to M-Ant. Isolation vs. Frequency
dB
On Path:
R
X
to
S-Ant.
Typical Performance Data (-2.75, +2.75 V)
Parameter
1
Condition
Frequency
Min.
Typ.
Max.
Unit
Switching Characteristics
Rise, Fall Time
75
ns
On, Off Time
150
ns
Input Power for 1 dB Compression
T
X
to M-Ant
0.9 GHz
+38
dBm
R
X
to M-Ant.
+33
dBm
R
X
to S-Ant.
+33
dBm
Intermodulation Intercept Point
For Two-tone Input Power at +13 dBm
0.9 GHz
T
X
to M-Ant
+49
dBm
R
X
to M-Ant.
+48
dBm
Adjacent Channel Power Performance
T
X
to M-Ant. (PDC Standard,
30 dBm Input, 100 kHz Detune)
+69
dBm
Harmonic Channel Power Performance
30 dBm Input
0.9 GHz
2nd Harmonic
+67
dBc
3rd Harmonic
+82
dBc
Control Voltages
V
Low
= -2.8 V
V
Low
-4.8 V, 500 A Max.
V
High
= -0.2 V
V
High
+3.2 V, 500 A Max.
Differential = +2.6 V
(V
High
V
Low
)
+8 V
1. All measurements made in a 50
system, unless otherwise specified.
Operating Characteristics at 25C (-2.75, +2.75 V)
Skyworks Solutions, Inc. [978] 241-7000
Fax [978] 241-7906 Email sales@skyworksinc.com www.skyworksinc.com
3
Specifications subject to change without notice. 3/99A
GaAs IC Receive Diversity T/R Switch DC2 GHz
AS149-59
Characteristic
Value
RF Input Power
6 W > 500 MHz, 0/-10 V
Positive Voltage Differential Bias
3 V
(V
High
V
Low
)
10.0 V
Operating Temperature
-40C to +85C
Storage Temperature
-65C to +150C
JC
25C/W
Absolute Maximum Ratings
Note: Exceeding these parameters may cause irreversible damage.
V
1
V
2
V
3
T
X
M-Ant. R
X
M-Ant. R
X
S-Ant.
V
High
V
Low
V
Low
Insertion
Isolation
Isolation
Loss
V
Low
V
High
V
Low
Isolation
Insertion
Isolation
Loss
V
Low
V
Low
V
High
Isolation
Isolation
Insertion
Loss
Truth Table
Pin Out
V
Low
= -2.8 to -4.8 V.
V
High
= -0.2 to +3.2 V.
DC blocking (C
BL
) and bypass (C
BP
) capacitors must be supplied externally
only if V
High
> 0 V.
C
BL
= 100 pF, C
BP
= 1000 pF for operation >500 MHz.
R
X
T
X
V
3
V
2
V
1
GND
S-Ant.
M-Ant.
12
3
4
87
6
5
C
BL
C
BP
C
BL
C
BL
C
BL
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