ALPHA AS191-73 Datasheet
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com 1
Specifications subject to change without notice. 8/00A
PHEMT GaAs IC High Linearity 3 V
Control SPDT Switch 0.1–2 GHz
Features
■ +2.5 to +5 V Linear Operation
■ Harmonics H
2
, H3> 65 dBc @
P
IN
= 34.5 dBm
■ Low Inser tion Loss (0.5 dB @ 0.9 GHz)
■ High Isolation (27 dB @ 0.9 GHz)
■ Ultra Miniature SOT-6 Package
■ PHEMT Process
SOT-6
AS191-73
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 AS191-73 is a PHEMT GaAs FET IC high linearity
SPDT switch in a SO T-6 plastic package .This switch has
been designed for use where extremely high linearity, low
control voltage, high isolation, low insertion loss and ultra
miniature package size are required.It can be controlled
with positive, negative or a combination of both v oltages .
Some standard implementations include antenna
changeover, T/R and diversity switching over 3 W. The
Parameter
1
Frequency Min. Typ. Max. Unit
Insertion Loss
2
0.1–0.5 GHz 0.45 0.60 dB
0.5–1.0 GHz 0.50 0.60 dB
1.0–2.0 GHz 0.55 0.70 dB
Isolation 0.1–0.5 GHz 31 33 dB
0.5–1.0 GHz 25 27 dB
1.0–2.0 GHz 19 21 dB
VSWR
3
0.1–1.0 GHz 1.2:1 dB
1.0–2.0 GHz 1.3:1 dB
Electrical Specifications at 25°C (0, +3 V)
Parameter Condition Frequency Min. Typ. Max. Unit
Switching Characteristics
4
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 -0.1 dB Compression 0/+3 V 0.9 GHz +35 dBm
Harmonics H2, H
3
PIN= 34.5 dBm 0.9 GHz +65 dBc
Control Voltages V
Low
= 0 to 0.2 V @ 20 µA Max.
V
High
= +2.5 V @ 100 µA Max.to +5 V @ 200 µA Max.
Operating Characteristics at 25°C (0, +3 V)
1.All measurements made in a 50 Ω system, unless otherwise specified.
2. Insertion loss changes by 0.003 dB/°C.
3. Insertion loss state.
4.Video feedthru measured with 1 ns risetime pulse and 500 MHz bandwidth.
AS191-73 switch can be used in many analog and digital
wireless communication systems including cellular, GSM
and DECT applications.
PHEMT GaAs IC High Linearity 3 V Control SPDT Switch 0.1–2 GHz AS191-73
2 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com
Specifications subject to change without notice. 8/00A
C
BL
C
BL
V
1
J
1
V
2
J
2
GND
J
3
C
BL
123
654
Pin Out
V
1
V
2
J1–J
2
J1–J
3
0V
High
Isolation Insertion Loss
V
High
0 Insertion Loss Isolation
Truth Table
V
High
= +2.5 to +5 V.
DC blocking capacitors (C
BL
) must be supplied externally.
C
BL
= 47 pF for operating frequency >500 MHz.
Insertion Loss vs. Frequency
Insertion Loss (dB)
-1.0
-0.9
-0.8
-0.7
-0.6
-0.5
-0.4
-0.3
-0.2
-0.1
0
0 0.5 1.0 1.5 2.0 2.5 3.0
Frequency (GHz)
Isolation vs. Frequency
Isolation (dB)
Frequency (GHz)
-50
-40
-30
-20
-10
0
0 0.5 1.0 1.5 2.0 2.5 3.0
VSWR vs. Frequency
VSWR
Frequency (GHz)
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
0 0.5 1.0 1.5 2.0 2.5 3.0
Harmonics vs. Control Voltage
P
IN
= 34.5 dBm, 900 MHz, GSM Pulsed
30
35
40
45
50
55
60
65
70
75
80
2.0 2.5 3.0 3.5 4.0 4.5 5.0
V
CTRL
(V)
H
2
(dBc) and H
3
(dBc)
H
2
H
3
Typical Performance Data
Characteristic Value
RF Input Power 6 W Max. > 900 MHz,
0/+5 V Control
Control Voltage -0.2 V, +8 V
Operating Temperature -40°C to +85°C
Storage Temperature -65°C to +150°C
Θ
JC
25°C/W
Absolute Maximum Ratings
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