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 DC–2 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
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
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
Parameter1
Frequency2
Min.
Typ.
Max.
Unit
Insertion Loss3
DC–0.5 GHz
0.35
0.40
dB
DC–1.0 GHz
0.35
0.50
dB
DC–2.0 GHz
0.55
0.70
dB
Isolation
DC–0.5 GHz
23
26
dB
DC–1.0 GHz
18
20
dB
DC–2.0 GHz
11
14
dB
VSWR4
DC–1.0 GHz
1.2:1
1.4:1
dB
DC–2.0 GHz
1.3:1
1.8:1
dB
Electrical Specifications at 25°C (0, +3 V)
Parameter
Condition
Frequency
Min.
Typ.
Max.
Unit
Switching Characteristics5
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
VLow = 0 to 0.2 V @ 20 A Max.
VHigh = +3 V @ 100 A Max. to +5 V @ 200 A Max.
VS = VHigh ± 0.2 V
Operating Characteristics at 25°C (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.