Alpha Industries, Inc. [781] 935-5150
Fax [617] 824-4579 Email sales@alphaind.com www.alphaind.com
1
Specifications subject to change without notice. 11/99A
PHEMT GaAs IC High Linearity Positive
Control SPDT Switch DC2 GHz
Features
I High Linearity (50 dBm IP3 @ 0.9 GHz)
@ 3 V
I Low Insertion Loss (0.35 dB @ 0.9 GHz)
I Isolation (21 dB @ 0.9 GHz)
I +3 V Operation
I Ultra Miniature SOT-6 Package
I PHEMT Process
SOT-6
AS173-73
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
Description
The AS173-73 is a PHEMT GaAs FET IC high linearity
SPDT switch in a SOT-6 plastic package. This switch has
been designed for use where extremely high linearity, low
insertion loss and ultra miniature package size are
required. It can be controlled with positive, negative or a
combination of both voltages.
Some standard
implementations include antenna changeover, T/R and
Parameter
1
Frequency
2
Min.
Typ.
Max.
Unit
Insertion Loss
3
DC0.5 GHz
0.35
0.40
dB
DC1.0 GHz
0.35
0.50
dB
DC2.0 GHz
0.55
0.70
dB
Isolation
DC0.5 GHz
23
26
dB
DC1.0 GHz
18
20
dB
DC2.0 GHz
11
14
dB
VSWR
4
DC1.0 GHz
1.2:1
1.4:1
dB
DC2.0 GHz
1.3:1
1.8:1
dB
Electrical Specifications at 25C (0, +3 V)
Parameter
Condition
Frequency
Min.
Typ.
Max.
Unit
Switching Characteristics
5
Rise, Fall (10/90% or 90/10% RF)
60
ns
On, Off (50% CTL to 90/10% RF)
100
ns
Video Feedthru
50
mV
Input Power for 1 dB Compression
0/+3 V
0.9 GHz
+34
dBm
0/+5 V
0.9 GHz
+38
dBm
Intermodulation Intercept Point (IP3)
For Two-tone Input Power +17 dBm
0/+3 V
0.9 GHz
+50
dBm
0/+5 V
0.9 GHz
+57
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
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.
diversity switching over 2 W. The AS173-73 switch can be
used in many analog and digital wireless communication
systems including cellular, GSM and DECT applications.
PHEMT GaAs IC High Linearity Positive Control SPDT Switch DC2 GHz
AS173-73
2
Alpha Industries, Inc. [781] 935-5150
Fax [617] 824-4579 Email sales@alphaind.com www.alphaind.com
Specifications subject to change without notice. 11/99A
C
BL
C
BL
V
1
J
1
V
2
J
2
GND
J
3
C
BL
V
S
12
3
65
4
10 k
Pin Out
V
1
V
2
J
1
J
2
J
1
J
3
0
V
High
Isolation
Insertion Loss
V
High
0
Insertion Loss
Isolation
Truth Table
V
High
= +3 to +5 V (V
S
= V
High
0.2 V).
DC blocking capacitors (C
BL
) must be supplied externally.
C
BL
= 100 pF for operating frequency >500 MHz.
Typical Performance Data (0, +3 V)
Insertion Loss vs. Frequency
Frequency (GHz)
Insertion Loss (dB)
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.0
0.5
1.0
1.5
2.0
2.5
VSWR vs. Frequency
Frequency (GHz)
VSWR
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
0.0
0.5
1.0
1.5
2.0
2.5
Isolation vs. Frequency
Frequency (GHz)
Isolation (dB)
10
15
20
25
30
35
40
45
0.0
0.5
1.0
1.5
2.0
2.5
Characteristic
Value
RF Input Power
10 W Max. > 900 MHz
0/+7 V Control
Control Voltage
-0.2 V, +8 V
Operating Temperature
-40C to +85C
Storage Temperature
-65C to +150C
JC
25C/W
Absolute Maximum Ratings
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