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Alpha Industries, Inc. [781] 935-5150
Fax [617] 824-4579 Email sales@alphaind.com www.alphaind.com
1
Specifications subject to change without notice. 3/00A
18–40 GHz GaAs MMIC
High Isolation SPST Reflective PIN Switch
Features
I Broad Bandwidth
I Low Loss, < 1.3 dB
I High Isolation, > 37 dB
I Excellent Return Loss, < -13 dB
I Fast Switching Speed, 4 ns
I High Power Handling, 37 dBm Peak,
33 dBm CW
Description
Alpha’s high isolation, single pole, single throw PIN diode
switch is a robust, high performance switch. It is ideal for
low loss, high isolation applications, particularly where
broad bandwidths and high power handling is required.
The chip uses Alpha’s proven PIN diode technology, and
is based upon MBE layers for the highest uniformity and
repeatability. The diodes employ surface passivation to
ensure a rugged, reliable part with through-substrate via
holes and gold-based backside metallization to facilitate
an epoxy die attach process. The GaAs MMIC employs
two shunt PIN diodes and an on-chip bias network. Chips
are measured on a 100% basis at 24, 28, 31 and 35 GHz
for insertion loss, isolation, input and output return losses,
and also at DC for diode breakdown voltage and turn on
voltage.
Dimensions indicated in mm.
All pads are
≥ 0.07 mm wide.
Chip thickness = 0.1 mm.
Chip Outline
Parameter
Symbol
Condition
Min.
Typ.2
Max.
Unit
Insertion Loss
IL
F = 18, 21, 24, 28, 31, 35 GHz
1.0
1.3
dB
F = 38, 40 GHz
1.3
1.9
dB
Isolation
ISO
F = 18, 21, 24, 28, 31, 35 GHz
37
42
dB
F = 38, 40 GHz
33
36
dB
Input Return Loss (Insertion State)
RLI
F = 18, 21 GHz
14
12
dB
F = 24, 28, 31, 35, 38, 40 GHz
24
15
dB
Output Return Loss (Insertion State)
RLO
F = 18, 21 GHz
14
12
dB
F = 24, 28, 31, 35, 38, 40 GHz
22
13
dB
Leakage Current
IDD
V = -50 V
2
20
A
Switching Speed1
4ns
Output Power at 1 dB Compression1
P1 dB
F = 35 GHz
33
dBm
Electrical Specifications at 25°C
0.000
1.225
0.670
0.313
0.585
0.877
0.070
1.150
Absolute Maximum Ratings
Characteristic
Value
Operating Temperature
-55°C to +125°C
Storage Temperature
-65°C to +150°C
DC Reverse Bias
-70 V (-20 mA)
DC Forward Bias
+1.3 V (100 mA)
PIN
10 W
AP640R1-00
1. Not measured on a 100% basis.
2. Typical represents the median parameter value across the specified
frequency range for the median chip.