ALPHA AS188-92 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. 6/00A
PHEMT GaAs IC High Linearity Positive
Control SPDT Switch DC–2 GHz
Features
■ High Linearity (50 dBm IP3 @ 0.9 GHz)
@ 3 V
■ Low Insertion Loss (0.35 dB @ 0.9 GHz)
■ +3 V Operation
■ Ultra Miniature SC-70 6 Lead Package
■ PHEMT Process
SC-70 6 Lead
AS188-92
0.079 (2.00 mm)
± 0.008 (0.20 mm)
0.049 (1.25 mm)
± 0.004 (0.10 mm)
0.008 (0.20 mm)
± 0.004 (0.10 mm)
0.087 (2.20 mm)
± 0.008 (0.20 mm)
0.035 (0.90 mm)
± 0.004 (0.10 mm)
0.002 (0.005 mm)
± 0.002 (0.005 mm)
0.037 (0.95 mm)
± 0.006 (0.15 mm)
0.010 (0.25 mm)
± 0.006 (0.15 mm)
0.0055
(0.14 mm)
± 0.0015
(0.04 mm)
0.0256 (0.65 mm)
BSC
0.009 (0.23 mm)
REF
PIN 1 INDICATOR
Description
The AS188-92 is a PHEMT GaAs FET IC high linearity
SPDT switch in a SC-70 6 lead 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
diversity switching over 2 W. The AS188-92 switch can be
used in many analog and digital wireless communication
systems including cellular, GSM and DECT applications.
Parameter
1
Frequency
2
Min. Typ. Max. Unit
Insertion Loss
3
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 22 dB
DC–2.0 GHz 13 17 dB
VSWR
4
DC–1.0 GHz 1.3:1 1.5:1 dB
DC–2.0 GHz 1.3:1 1.5:1 dB
Electrical Specifications at 25°C (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 0.9 GHz +33 dBm
Intermodulation Intercept Point (IP3) For Two-tone Input Power +17 dBm 0.9 GHz +50 dBm
Control Voltages V
Low
= 0 to 0.2 V @ 20 µA Max.
V
High
= +3 V @ 100 µA Max. to +5 V @ 200 µA Max.
VS= V
High
± 0.2 V
Operating Characteristics at 25°C (0, +3 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.
PHEMT GaAs IC High Linearity Positive Control SPDT Switch DC–2 GHz AS188-92
2 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com
Specifications subject to change without notice. 6/00A
C
BL
C
BL
V
1
J
1
V
2
J
2
GND
J
3
C
BL
V
S
12 3
65 4
10 kΩ
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
= +3 to +5 V (VS= 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
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
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 6 W Max. > 900 MHz
0/+7 V Control
Control Voltage -0.2 V, +7 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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