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
a73 Positive Voltage Control (0/+3 to 0/+5 V)
a73 High Isolation (55 dB @ 0.9 GHz
and 1.9 GHz)
a73 Miniature MSOP-8 Exposed Pad Package
a73 Three Switch Solution for Base Station
Synthesizer Switch
a73 Non-Reflective
a73 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.