AS178-73
器件描述：PHEMT GaAs IC High Linearity Positive Control SPDT Switch DC-2 GHz
器件厂商：ALPHA [Alpha Industries]
文件大小：40.04KB，共2页
Sponsor by e络盟器件资料摘要：
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com 1
Specifications subject to change without notice. 11/99A
PHEMT GaAs IC High Linearity Positive
Control SPDT Switch DC–2 GHz
Features
a73 High Linearity (50 dBm IP3 @ 0.9 GHz)
@ 3 V
a73 Low Insertion Loss (0.35 dB @ 0.9 GHz)
a73 Isolation (21 dB @ 0.9 GHz)
a73 +3 V Operation
a73 Ultra Miniature SOT-6 Package
a73 PHEMT Process
SOT-6
AS178-73
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˚
Description
The AS178-73 is a PHEMT GaAs FET IC high linearity
SPDT switch in a SOT-6 plastic package.This switch has
been designed for use where extremely high linearity, low
insertion loss and ultra miniature package size are
required. It can be controlled with positive, negative or a
combination of both voltages. Some standard
implementations include antenna changeover, T/R and
Parameter
1
Frequency
2
Min. Typ. Max. Unit
Insertion Loss
3
DC–0.5 GHz 0.45 0.6 dB
DC–1.0 GHz 0.45 0.6 dB
DC–2.0 GHz 0.55 0.7 dB
Isolation DC–0.5 GHz 25 28 dB
DC–1.0 GHz 20 23 dB
DC–2.0 GHz 14 17 dB
VSWR
4
DC–1.0 GHz 1.2:1 1.4:1
DC–2.0 GHz 1.3:1 1.8:1
Electrical Specifications at 25°C (0, +3 V)
Preliminary
Parameter Condition Frequency Min. Typ. Max. Unit
Switching Characteristics
5
Rise, Fall (10/90% or 90/10% RF) 60 ns
On, Off (50% CTL to 90/10% RF) 100 ns
Video Feedthru 50 mV
Input Power for 1 dB Compression 0/+3 V 0.9 GHz +34 dBm
0/+5 V 0.9 GHz +38 dBm
Intermodulation Intercept Point (IP3) For Two-tone Input Power +17 dBm
0/+3 V 0.9 GHz +50 dBm
0/+5 V 0.9 GHz +57 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.
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.
diversity switching over 2 W.The AS178-73 switch can be
used in many analog and digital wireless communication
systems including cellular, GSM and DECT applications.
Specifications subject to change without notice. 11/99A
PHEMT GaAs IC High Linearity Positive
Control SPDT Switch DC–2 GHz
Features
a73 High Linearity (50 dBm IP3 @ 0.9 GHz)
@ 3 V
a73 Low Insertion Loss (0.35 dB @ 0.9 GHz)
a73 Isolation (21 dB @ 0.9 GHz)
a73 +3 V Operation
a73 Ultra Miniature SOT-6 Package
a73 PHEMT Process
SOT-6
AS178-73
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˚
Description
The AS178-73 is a PHEMT GaAs FET IC high linearity
SPDT switch in a SOT-6 plastic package.This switch has
been designed for use where extremely high linearity, low
insertion loss and ultra miniature package size are
required. It can be controlled with positive, negative or a
combination of both voltages. Some standard
implementations include antenna changeover, T/R and
Parameter
1
Frequency
2
Min. Typ. Max. Unit
Insertion Loss
3
DC–0.5 GHz 0.45 0.6 dB
DC–1.0 GHz 0.45 0.6 dB
DC–2.0 GHz 0.55 0.7 dB
Isolation DC–0.5 GHz 25 28 dB
DC–1.0 GHz 20 23 dB
DC–2.0 GHz 14 17 dB
VSWR
4
DC–1.0 GHz 1.2:1 1.4:1
DC–2.0 GHz 1.3:1 1.8:1
Electrical Specifications at 25°C (0, +3 V)
Preliminary
Parameter Condition Frequency Min. Typ. Max. Unit
Switching Characteristics
5
Rise, Fall (10/90% or 90/10% RF) 60 ns
On, Off (50% CTL to 90/10% RF) 100 ns
Video Feedthru 50 mV
Input Power for 1 dB Compression 0/+3 V 0.9 GHz +34 dBm
0/+5 V 0.9 GHz +38 dBm
Intermodulation Intercept Point (IP3) For Two-tone Input Power +17 dBm
0/+3 V 0.9 GHz +50 dBm
0/+5 V 0.9 GHz +57 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.
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.
diversity switching over 2 W.The AS178-73 switch can be
used in many analog and digital wireless communication
systems including cellular, GSM and DECT applications.