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
Parameter
Condition
Frequency
Min.
Typ.
Max.
Unit
Switching Characteristics
5
Rise, Fall (10/90% or 90/10% RF)
10
ns
On, Off (50% CTL to 90/10% RF)
20
ns
Video Feedthru
25
mV
Input Power for 1 dB Compression
0/+3 V
0.52.0 GHz
+21
dBm
0/+5 V
0.52.0 GHz
+28
dBm
Intermodulation Intercept Point (IP3)
For Two-tone Input Power +13 dBm
0.52.0 GHz
+45
dBm
Control Voltages
V
Low
= 0 to 0.2 V @ 20 A Max.
V
High
= +3 V @ 100 A Max. to +5 V @ 200 A Max.
V
S
= V
High
0.2 V
GaAs IC SPDT Reflective Switch
Positive Control DC2.5 GHz
Features
Low Insertion Loss (0.4 dB @ 0.9 GHz)
Complementary Positive Control Voltages
(0/+3 V to 0/+5 V)
Positive Voltage Supply (+3 to +5 V)
Low DC Power Consumption
Ultra Miniature 6 Lead SOT-6 Package
SOT-6
AS125-73
Description
The AS125-73 is a GaAs IC FET SPDT reflective switch
in the SOT-6 plastic package for commercial applications.
For positive operation it requires a fixed positive bias (V
S
)
on the J
1
line and DC blocks on all RF lines. This switch
can also be operated with complementary negative
voltage (no V
S
or blocking caps required). The AS125-73
provides a low cost solution for IF switching requirements
in dual-band and dual mode subscribers.
Parameter
1
Frequency
2
Min.
Typ.
Max.
Unit
Insertion Loss
3
DC0.5 GHz
0.4
0.5
dB
DC1.0 GHz
0.45
0.6
dB
DC2.0 GHz
0.6
0.8
dB
DC2.5 GHz
0.9
1.1
dB
Isolation
DC0.5 GHz
22
25
dB
DC1.0 GHz
17
20
dB
DC2.0 GHz
11
14
dB
DC2.5 GHz
10
13
dB
VSWR
4
DC1.0 GHz
1.2:1
1.3:1
DC2.5 GHz
1.5:1
1.7:1
Electrical Specifications at 25C (0, +3 V)
Operating Characteristics at 25C (0, +3 V)
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.
5. Video feedthru measured with 1 ns risetime pulse and 500 MHz bandwidth.
0.074
(1.90 mm REF.)
0.071 (1.80 mm)
0.052 (1.30 mm)
0.037 (0.95 mm) REF.
0.122 (3.10 mm)
0.106 (2.70 mm)
0.006
(0.15 mm)
0.000
(0.00 mm)
0.057 (1.45 mm)
0.035 (0.90 mm)
0.020 (0.51 mm)
0.014 (0.350 mm)
0.126 (3.20 mm)
0.087 (2.20 mm)
PIN 6
PIN 1
PIN 1
INDICATOR
0.022 (0.61 mm)
0.004 (0.10 mm)
0.014
(0.26 mm)
0.004
(0.10 mm)
0.012
(0.30 mm)
TYP.
5.0 1
5.0 1
GaAs IC SPDT Reflective Switch Positive Control DC2.5 GHz
AS125-73
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)
Insertion Loss vs. Frequency
0
0
0.2
0.4
0.5
0.6
0.8
1.0
1.0
1.5
2.0
2.5
1.2
1.4
dB
Frequency (GHz)
VSWR vs. Frequency
1
0
1.2
0.5
1.0
1.5
2.0
2.5
1.4
1.6
1.8
2.0
Frequency (GHz)
Isolation vs. Frequency
0
0
0.5
1.0
1.5
2.0
2.5
5
10
15
20
25
30
35
40
dB
Typical Performance Data (0, +3 V)
12
3
C
BL
J
3
GND
J
1
C
BL
65
4
C
BL
V
1
V
2
J
2
V
S
10 k
Pin Out
V
High
= +3 to +5 V (V
S
= V
High
0.2 V).
Characteristic
Value
RF Input Power
2 W > 500 MHz
0/+7 V Control
Control Voltage
-0.2 V, +8 V
Operating Temperature
-40C to +125C
Storage Temperature
-50C to +150C
JC
25C/W
Absolute Maximum Ratings
V
1
V
2
J
1
J
2
J
1
J
3
0
V
High
Isolation
Insertion
V
High
0
Insertion
Isolation
Truth Table
Positive Operation
DC blocking capacitors (C
BL
) and biasing resistor must be supplied externally
for positive voltage operation.
C
BL
= 100 pF for operation >500 MHz.
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