Skyworks Solutions, Inc. [781] 376-3000 • Fax [781] 376-3100 • Email sales@skyworksinc.com • www.skyworksinc.com 1
Specifications subject to change without notice. 10/99A
PHEMT GaAs IC Transfer Switch DC–2 GHz
Features
■ High Linearity (+50 dBm IP3 @ 0.9 GHz)
@ 3 V
■ Low Insertion Loss (0.4 dB @ 0.9 GHz)
■ Isolation (20 dB @ 0.9 GHz)
■ Simultaneous T/R Switching
AS172-73
Description
The AS172-73 is a PHEMT GaAs IC 4 port switch
designed to combine T/R and antenna changeover
switching capability within one device.This switch has two
controls and is ideal for applications requiring low power
consumption. The AS172-73 has excellent performance
to 2 GHz making it suitable for dual-band handset designs.
Parameter
1
Frequency
2
Min. Typ. Max. Unit
Insertion Loss
3
DC–0.5 GHz 0.30 0.40 dB
DC–1.0 GHz 0.40 0.50 dB
DC–2.0 GHz 0.95 1.20 dB
Isolation DC–0.5 GHz 23 25 dB
DC–1.0 GHz 16 18 dB
DC–2.0 GHz 11 13 dB
VSWR
4
DC–1.0 GHz 1.1:1
DC–2.0 GHz 1.4:1
Electrical Specifications at 25°C (0, +3 V)
0.074
(1.90 mm) Ref.
0.071 (1.80 mm)
0.052 (1.30 mm)
0.037 (0.95 mm) Ref.
0.122 (3.10 mm)
0.106 (2.70 mm)
0.006
(0.15 mm)
0.000
(0.00 mm)
0.057 (1.45 mm)
0.035 (0.90 mm)
0.020 (0.51 mm)
0.014 (0.350 mm)
0.126 (3.20 mm)
0.087 (2.20 mm)
Pin 6
Pin 1
Pin 1
Indicator
0.022 (0.61 mm)
0.004 (0.10 mm)
0.014
(0.26 mm)
0.004
(0.10 mm)
0.012
(0.30 mm)
Typ.
5.0˚ ± 1˚
5.0˚ ± 1˚
T
X
–J
1
or R
X
–J
1
SOT-6
Parameter Condition Frequency Min. Typ. Max. Unit
Switching Characteristics
5
Rise, Fall (10/90% or 90/10% RF) 50 ns
On, Off (50% CTL to 90/10% RF) 100 ns
Video Feedthru 50 mV
Input Power for 1 dB Compression 0/+3 V 0.5–2.0 GHz +34 dBm
Intermodulation Intercept Point (IP3) For Two-tone Input Power +15 dBm
0/+3 V 0.5–2.0 GHz +50 dBm
2nd Harmonic 30 dBm 1.0 GHz +72 dBc
3rd Harmonic 30 dBm 1.0 GHz +65 dBc
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.
V
S
= 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.