GaAs IC Receive Diversity
T/R Switch DC–2 GHz
AS149-59
Features
MSOP-8
■ PDC Antenna Switch
0.0256 (0.65 mm) TYP.
■ Transmit to Main Antenna
PIN 1
INDICATOR
■ Receive from Dual Antenna Ports
■ Operates with Positive, Negative or
Differential Voltages
PIN 1
■ Low DC Power Consumption
7.0˚
0.038 (0.95 mm) TYP.
0.030 (0.75 mm)
Description
The AS149-59 is a GaAs MMIC T/R Switch with receive
diversity ideal for use in PDC handsets and low power
base stations. It can be operated with positive or negative
3 V or differential biasing for high linearity. The switch is
packaged in a low cost, miniature MSOP-8 package.
0.118 (3.00 mm)
± 0.004 (0.1 mm)
SQ.
0.012 (0.30 mm)
0.017
(0.43 mm)
0.193 (4.90 mm)
REF.
+ 0.006 (0.15 mm)
- 0.002 (0.05 mm)
0.007 (0.18 mm)
± 0.005 (0.12 mm)
0.006 (0.15 mm)
0.002 (0.05 mm)
8.0˚
MAX.
0.028 (0.70 mm)
0.016 (0.40 mm)
Electrical Specifications at 25°C (-2.75, +2.75 V)
On Path
TX to M-Ant.
Parameter1
Frequency2
Loss3
DC–1.0 GHz
DC–2.0 GHz
Insertion
Min.
Max.
Unit
0.35
0.50
0.5
0.7
dB
dB
RX to M-Ant. Iso.
Insertion Loss
DC–1.0 GHz
DC–2.0 GHz
DC–1.0 GHz
DC–2.0 GHz
15
9
18
12
dB
dB
RX to S-Ant. Iso.
DC–1.0 GHz
DC–2.0 GHz
20
12
23
15
dB
dB
Insertion Loss
DC–1.0 GHz
DC–2.0 GHz
TX to M-Ant. Iso.
DC–1.0 GHz
DC–2.0 GHz
VSWR4
RX to S-Ant.
DC–1.0 GHz
DC–2.0 GHz
TX to M-Ant. Iso.
RX to M-Ant.
23
15
Typ.
26
19
DC–1.0 GHz
DC–2.0 GHz
0.65
0.9
0.5
0.9
20
12
dB
dB
0.8
1.1
0.6
1.1
24
15
dB
dB
dB
dB
dB
dB
1.5:1
1.7:1
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.
Skyworks Solutions, Inc. [978] 241-7000 • Fax [978] 241-7906 • Email sales@skyworksinc.com • www.skyworksinc.com
Specifications subject to change without notice. 3/99A
1
