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 H2, H3> 65 dBc @
PIN = 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 s witch in a SO T-6 plastic package .This s witch has
been designed f or 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 , negativ e or a combination of both v oltages.
Some standard implementations include antenna
changeover, T/R and diversity switching over 3 W. The
Parameter1Frequency Min. Typ. Max. Unit
Inser tion Loss20.1–0.5 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
VSWR30.1–1.0 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 Characteristics4Rise, 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, H3PIN = 34.5 dBm 0.9 GHz +65 dBc
Control Voltages VLow = 0 to 0.2 V @ 20 µA Max.
VHigh = +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 Ωsystem, 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 s witch 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
2Alpha Industries, Inc. [781] 935-5150 •Fax [617] 824-4579 •Email sales@alphaind.com •www.alphaind.com
Specifications subject to change without notice. 8/00A
CBL
CBL
V1
J1
V2
J2
GND
J3
CBL
123
654
Pin Out
V1V2J1–J2J1–J3
0V
High Isolation Insertion Loss
VHigh 0 Inser tion Loss Isolation
Truth Table
VHigh = +2.5 to +5 V.
DC blocking capacitors (CBL) must be supplied externally.
CBL = 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
PIN = 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
VCTRL (V)
H2 (dBc) and H3 (dBc)
H2
H3
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
ΘJC 25°C/W
Absolute Maximum Ratings
