ALPHA AS186-302 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. 2/00A
GaAs IC High Isolation Positive Control
SPDT Non-Reflective Switch DC–4.0 GHz
Features
■ Positive Voltage Control (0/+3 to 0/+5 V)
■ High Isolation (55 dB @ 0.9 GHz
and 1.9 GHz)
■ Miniature MSOP-8 Exposed Pad Package
■ Three Switch Solution for Base Station
Synthesizer Switch
■ Non-Reflective
■ Operation to 6 GHz
MSOP-8 Exposed Pad
AS186-302
Description
The AS186-302 is a GaAs FET IC SPDT non-reflective
switch packaged in a MSOP-8 exposed pad plastic
package for low cost, high isolation commercial
applications. Ideal building block for base station
applications where synthesizer isolation is critical. Typical
applications include GSM, PCS, WCDMA, 2.4 GHz ISM
and 3.5 GHz wireless local loop.
Parameter
1
Condition Frequency Min. Typ. Max. Unit
Insertion Loss DC–2.0 GHz 0.8 1.05 dB
DC–3.0 GHz 0.9 1.15 dB
DC–4.0 GHz 1.0 1.25 dB
Isolation
2
DC–2.0 GHz 50 55 dB
DC–3.0 GHz 45 50 dB
DC–4.0 GHz 35 40 dB
VSWR (On State) DC–2.0 GHz 1.3:1 1.5:1
DC–4.0 GHz 1.3:1 1.6:1
VSWR (Off State) 0.5–4.0 GHz 1.35:1 1.7:1
Switching Characteristics
3
Rise, Fall (10/90% or 90/10% RF) 30 ns
On, Off (50% CTL to 90/10% RF) 50 ns
Video Feedthru 25 mV
Input Power for 1 dB Compression 0/+3 V 0.9–4.0 GHz 17 21 dBm
0/+5 V 0.9–4.0 GHz 24 27 dBm
Intermodulation Intercept Point (IIP3) For Two-tone Input Power +8 dBm
0/+3 V 0.9–4.0 GHz 27 38 dBm
0/+5 V 0.9–4.0 GHz 42 46 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.
Electrical Specifications (0, +5 V), -40 to +85°C
0.073
(1.85 mm)
0.063
(1.60 mm)
0.072 (1.83 mm)
0.062 (1.57 mm)
0.0256
(0.650 mm)
TYP.
0.122 (3.09 mm)
0.114 (2.89 mm)
0.200 (5.08 mm)
0.114 (4.67 mm)
0.122
(3.09 mm)
0.114
(2.89 mm)
EXPOSED
PADDLE
8
1
PIN 1
INDICATOR
0.012 (0.30 mm)
0.008 (0.20 mm)
0.006 (0.15 mm)
0.002 (0.05 mm)
0.044
(1.12 mm) MAX.
1. All measurements made in a 50 Ω system, unless otherwise specified.
2. Backside of exposed pad must be connected to RF ground to obtain
specified isolation.
3. Video feedthru measured with 3 ns risetime pulse.
GaAs IC High Isolation Positive Control SPDT Non-Reflective Switch DC–4.0 GHz AS186-302
2 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com
Specifications subject to change without notice. 2/00A
Insertion Loss vs. Frequency
01 23 4 5 6
Frequency (GHz)
Insertion Loss (dB)
-3.0
-2.5
-2.0
-1.5
-1.0
-0.5
0
J1–J
2
J1–J
3
Isolation vs. Frequency
01 23 45 6
Frequency (GHz)
Isolation (dB)
-70
-60
-50
-40
-30
-20
-10
0
J1–J
2
J1–J
3
Isolation vs. Frequency
-40, 25, 85˚C
01 23 45 6
Frequency (GHz)
Isolation (dB)
-70
-60
-50
-40
-30
-20
-10
0
-40˚C
25˚C
85˚C
0123456
Frequency (GHz)
VSWR vs Frequency
1.00
1.25
1.50
1.75
2.00
2.25
2.50
VSWR
S11 On
S22 Off
S22 On
0123456
Frequency (GHz)
VSWR vs Frequency
-40, 25, 85˚C (S
22
Off)
1.00
1.25
1.50
1.75
2.00
2.25
2.50
VSWR
-40˚C
25˚C
85˚C
Typical Performance Data (0, +5 V)
Insertion Loss vs. Frequency
-40, 25, 85˚C
0123 45 6
Frequency (GHz)
Insertion Loss (dB)
-3.0
-2.5
-2.0
-1.5
-1.0
-0.5
0
-40˚C
25˚C
85˚C
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