ALPHA AS139-73

GaAs IC High Linearity Positive Control
SPDT Switch DC–2 GHz
AS139-73
Features
SOT-6
■ High Linearity (55 dBm IP3 @ 0.9 GHz)
0.074
(1.90 mm REF.)
■ Low Insertion Loss (0.35 dB @ 0.9 GHz)
■ Low DC Power Consumption
0.126 (3.20 mm)
0.087 (2.20 mm)
PIN 6
0.071 (1.80 mm)
0.052 (1.30 mm)
PIN 1
INDICATOR
PIN 1
■ +3 V to +5 V Operation
0.020 (0.51 mm)
0.014 (0.350 mm)
■ Ultra Miniature SOT-6 Package
Description
The AS139-73 is a 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 ultraminiature 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
diversity switching over 2 W. The AS139-73 switch can be
used in many analog and digital wireless communication
systems including cellular, GSM and DECT applications.
0.037 (0.95 mm) REF.
0.057 (1.45 mm)
0.035 (0.90 mm)
0.006
(0.15 mm)
0.000
(0.00 mm)
0.012
(0.30 mm)
TYP.
5.0˚ ± 1˚
0.014
(0.26 mm)
0.004
(0.10 mm)
5.0˚ ± 1˚
0.122 (3.10 mm)
0.106 (2.70 mm)
0.022 (0.61 mm)
0.004 (0.10 mm)
Electrical Specifications at 25°C (0, +5 V)
Parameter1
Frequency2
Insertion Loss3
DC–0.5 GHz
DC–1.0 GHz
DC–2.0 GHz
Isolation
DC–0.5 GHz
DC–1.0 GHz
DC–2.0 GHz
VSWR4
DC–1.0 GHz
DC–2.0 GHz
Min.
20
15
8
Typ.
Max.
Unit
0.3
0.4
1.0
0.4
0.6
1.2
dB
dB
dB
23
17
10
dB
dB
dB
1.3:1
1.3:1
1.4:1
1.8:1
dB
dB
Typ.
Max.
Unit
Operating Characteristics at 25°C (0, +5 V)
Parameter1
Switching Characteristics5
Condition
Frequency
Rise, Fall (10/90% or 90/10% RF)
On, Off (50% CTL to 90/10% RF)
Video Feedthru
Input Power for 1 dB Compression
Min.
60
100
50
ns
ns
mV
0.9 GHz
+38
dBm
0.9 GHz
+55
dBm
Intermodulation Intercept Point (IP3)
For Two-tone Input Power +10 dBm
Control Voltages
VLow = 0 to 0.2 V @ 20 µA Max.
VHigh = +3 V @100 µA Max. to +5 V @ 200 µA Max.
VS = VHigh ± 0.2 V
1. All measurements made in a 50 Ω 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.
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com
Specifications subject to change without notice. 3/99A
1
GaAs IC High Linearity Positive Control SPDT Switch DC–2 GHz
AS139-73
Typical Performance Data (0, +5 V)
60
0.6
50
0.5
40
dB
dB
0.7
0.4
30
0.3
20
0.2
DC
1.0
10
DC
2.0
1.0
2.0
Frequency (GHz)
Frequency (GHz)
Insertion Loss vs. Frequency
Isolation vs. Frequency
Absolute Maximum Ratings
2.0
Characteristic
1.8
6 W Max. > 900 MHz,
0/-5 V Control
Control Voltage
-0.2 V, +8 V
1.6
1.4
Value
RF Input Power
Operating Temperature
-40°C to +85°C
Storage Temperature
-65°C to +150°C
ΘJC
1.2
25°C/W
1.0
DC
1.0
2.0
Pin Out
Frequency (GHz)
VS
J1–J3
Insertion Loss
VHigh
0
Insertion Loss
Isolation
VHigh = +3 to +5 V (VS = VHigh ± 0.2 V).
2
J3
CBL
4
J1–J2
Isolation
V1
V2
DC blocking capacitors (CBL) must be supplied externally.
CBL = 100 pF for operating frequency >500 MHz.
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com
Specifications subject to change without notice. 3/99A
10 kΩ
CBL
3
V2
VHigh
5
GND
0
6
CBL
Truth Table
V1
2
J2
1
VSWR vs. Frequency
J1