Preliminary
PHEMT GaAs IC High Linearity Positive
Control SPDT Switch DC–2 GHz
AS185-92
Features
SC-70 6 Lead
I High Linearity (50 dBm IP3 @ 0.9 GHz)
0.079 (2.00 mm)
0.00ꢀ (0.20 mm)
0.0256 (0.65 mm)
@ 3 V
BSC
I Low Insertion Loss (0.35 dB @ 0.9 GHz)
I +3 V Operation
0.0ꢀ7 (2.20 mm)
0.00ꢀ (0.20 mm)
0.049 (1.25 mm)
0.004 (0.10 mm)
I Ultra Miniature SC-70 6 Lead Package
I PHEMT Process
0.009 (0.23 mm)
REF
PIN 1 INDICATOR
0.035 (0.90 mm)
0.004 (0.10 mm)
0.010 (0.25 mm)
0.006 (0.15 mm)
Description
0.0055
(0.14 mm)
0.0015
The AS1ꢀ5-92 is a PHEMT GaAs FET IC high linearity
SPDT switch in a SC-70 6 lead 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
diversity switching over 2 W.The AS1ꢀ5-92 switch can be
used in many analog and digital wireless communication
systems including cellular, GSM and DECT applications.
(0.04 mm)
0.002 (0.005 mm)
0.002 (0.005 mm)
0.037 (0.95 mm)
0.006 (0.15 mm)
0.00ꢀ (0.20 mm)
0.004 (0.10 mm)
Electrical Specifications at 25°C (0, +3 V)
1
2
Parameter
Frequency
Min.
Typ.
Max.
Unit
3
Insertion Loss
DC–0.5 GHz
DC–1.0 GHz
DC–2.0 GHz
0.45
0.45
0.55
0.6
0.6
0.7
dB
dB
dB
Isolation
DC–0.5 GHz
DC–1.0 GHz
DC–2.0 GHz
25
20
14
2ꢀ
23
17
dB
dB
dB
4
VSWR
DC–1.0 GHz
DC–2.0 GHz
1.2:1
1.3:1
1.4:1
1.ꢀ:1
Operating Characteristics at 25°C (0, +3 V)
Parameter
Condition
Frequency
Min.
Typ.
Max.
Unit
5
Switching Characteristics
Rise, Fall (10/90% or 90/10% RF)
On, Off (50% CTL to 90/10% RF)
Video Feedthru
60
100
50
ns
ns
mV
Input Power for 1 dB Compression
Intermodulation Intercept Point (IP3)
0/+3 V
0/+5 V
0.9 GHz
0.9 GHz
+34
+3ꢀ
dBm
dBm
For Two-tone Input Power +17 dBm
0/+3 V
0/+5 V
0.9 GHz
0.9 GHz
+50
+57
dBm
dBm
Control Voltages
V
V
V
= 0 to 0.2 V @ 20 µA Max.
= +3 V @ 100 µA Max. to +5 V @ 200 µA Max.
Low
High
= V
0.2 V
S
High
4. Insertion loss state.
5.Video feedthru measured with 1 ns risetime pulse and 500 MHz bandwidth.
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.
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