SKYWORKS AS172-73

PHEMT GaAs IC Transfer Switch DC–2 GHz
AS172-73
Features
■ High Linearity (+50 dBm IP3 @ 0.9 GHz)
@3V
SOT-6
0.074
(1.90 mm) Ref.
0.126 (3.20 mm)
0.087 (2.20 mm)
Pin 6
■ Low Insertion Loss (0.4 dB @ 0.9 GHz)
0.071 (1.80 mm)
0.052 (1.30 mm)
Pin 1
Indicator
Pin 1
■ Isolation (20 dB @ 0.9 GHz)
■ Simultaneous T/R Switching
0.037 (0.95 mm) Ref.
0.020 (0.51 mm)
0.014 (0.350 mm)
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.
0.057 (1.45 mm)
0.035 (0.90 mm)
0.006
(0.15 mm)
0.000
(0.00 mm)
0.012
(0.30 mm)
Typ.
5.0˚ ± 1˚
0.014
(0.26 mm)
0.004
(0.10 mm)
5.0˚ ± 1˚
0.122 (3.10 mm)
0.106 (2.70 mm)
0.022 (0.61 mm)
0.004 (0.10 mm)
Electrical Specifications at 25°C (0, +3 V)
TX–J1 or RX–J1
Parameter1
Frequency2
Insertion Loss3
DC–0.5 GHz
DC–1.0 GHz
DC–2.0 GHz
Isolation
DC–0.5 GHz
DC–1.0 GHz
DC–2.0 GHz
VSWR4
DC–1.0 GHz
DC–2.0 GHz
Min.
23
16
11
Typ.
Max.
Unit
0.30
0.40
0.95
0.40
0.50
1.20
dB
dB
dB
25
18
13
dB
dB
dB
1.1:1
1.4:1
Operating Characteristics at 25°C (0, +3 V)
Parameter
Switching
Characteristics5
Condition
Frequency
Rise, Fall (10/90% or 90/10% RF)
On, Off (50% CTL to 90/10% RF)
Video Feedthru
Min.
Typ.
Max.
Unit
50
100
50
ns
ns
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
VLow = 0 to 0.2 V @ 20 µA Max.
VHigh = +3 V @ 100 µA Max. to +5 V @ 200 µA Max.
VS = VHigh ± 0.2 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.
Skyworks Solutions, Inc. [781] 376-3000 • Fax [781] 376-3100 • Email [email protected] • www.skyworksinc.com
Specifications subject to change without notice. 10/99A
1
PHEMT GaAs IC Transfer Switch DC–2 GHz
AS172-73
1.2
45
1.0
40
Isolation (dB)
Insertion Loss (dB)
Typical Performance Data (0, +3 V)
0.8
0.6
0.4
0.2
35
30
25
20
15
0
10
0
0.5
1.0
1.5
2.0
2.5
0
0.5
1.5
2.0
2.5
Frequency (GHz)
Insertion Loss vs. Frequency
Isolation vs. Frequency
Absolute Maximum Ratings
1.6
Characteristic
1.5
RF Input Power
Value
2 W > 500 MHz
0/+7 V Control
1.4
VSWR
1.0
Frequency (GHz)
Control Voltage
1.3
-0.2 V, +8 V
Operating Temperature
-40°C to +85°C
1.2
Storage Temperature
-50°C to +150°C
1.1
ΘJC
25°C/W
1.0
0
0.5
1.0
1.5
2.0
2.5
Frequency (GHz)
VSWR vs. Frequency
Truth Table
Pin Out
Negative Operation
Positive Operation
TX–J2, RX–J1
TX–J1, RX–J2
0
-3
Insertion Loss
Isolation
-3
0
Isolation
Insertion Loss
External
Antenna
J2
CBL
CBL
5
2
V2
Positive Operation
TX–J2, RX–J1
TX–J1, RX–J2
VHigh
0
Insertion Loss
Isolation
0
VHigh
Isolation
Insertion Loss
VHigh = +3 to +8 V (VS = VHigh ± 0.2 V).
2
CBL
10 kΩ
4
V2
3
V1
TX
RX
6
V2
1
V1
V1
CBL
J1
Internal
Antenna
VS
DC blocking capacitors (CBL) and biasing resistor must be supplied externally
for positive voltage operation.
CBL = 100 pF for operation >500 MHz.
Skyworks Solutions, Inc. [781] 376-3000 • Fax [781] 376-3100 • Email [email protected] • www.skyworksinc.com
Specifications subject to change without notice. 10/99A