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
2440 GHz GaAs MMIC
SPDT Reflective PIN Switch
Features
I Broad Bandwidth
I Low Loss, < 1.1 dB (2435 GHz)
I High Isolation, > 30 dB
I Excellent Return Loss, < -12 dB
I Fast Switching Speed, < 2 ns
I High Power Handling, 37 dBm Peak,
33 dBm CW
Description
Alpha's single pole, double 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
a shunt PIN diode in each arm 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 = 24, 28, 31, 35 GHz
0.8
1.1
dB
F = 38, 40 GHz
1.8
2.4
dB
Isolation
ISO
F = 24, 28, 31, 35, 38, 40 GHz
30
34
dB
Input Return Loss
RL
I
F = 24, 28, 31, 35, 38, 40 GHz
25
15
dB
Output Return Loss (Insertion State)
RL
O
F = 24, 28, 31, 35 GHz
20
13
dB
F = 38, 40 GHz
14
12
dB
Leakage Current
I
DD
V = -50 V
1
10
µA
Switching Speed
1
2
ns
Output Power at 1 dB Compression
1
P
1 dB
F = 35 GHz
33
dBm
Electrical Specifications at 25°C
0.000
0.000
0.398
1.100
0.988
2.190
1.095
2.078
0.113
Absolute Maximum Ratings
Characteristic
Value
Operating Temperature
-55°C to +125°C
Storage Temperature
-65°C to +150°C
DC Reverse Bias
-70 V (-10 mA)
DC Forward Bias
+1.3 V (50 mA)
P
IN
10 W
AP640R5-00
1. Not measured on a 100% basis.
2. Typical represents the median parameter value across the specified
frequency range for the median chip.
2440 GHz GaAs MMIC SPDT Reflective PIN Switch
AP640R5-00
2
Alpha Industries, Inc. [781] 935-5150
· Fax [617] 824-4579 · Email sales@alphaind.com · www.alphaind.com
Specifications subject to change without notice. 3/00A
Performance vs. Frequency
Bias Conditions: I
F
= 10 mA, V
R
= -3.5 V
-40
-30
-20
-10
0
15
20
25
30
35
40
Frequency (GHz)
Return Loss & Isolation (dB)
-4
-3
-2
-1
0
Insertion Loss (dB)
Input Return Loss
Output Return Loss
Insertion Loss
Isolation
-40
-30
-20
-10
0
Return Loss & Isolation (dB)
-4
-3
-2
-1
0
Insertion Loss (dB)
Performance vs. DC Bias
F = 28 GHz, Reverse Voltage = -3.5 V
Forward Current (mA)
1
2
5
10
20
Output Return Loss
Input Return Loss
Isolation
Insertion Loss
J
3
J
2
B
2
B
1
RESISTOR
RESISTOR
"ON ARM"
-5 V (~ 1
µA)
"OFF ARM"
+10 mA (~ 1.25 V)
J
1
J
2
J
1
B
1
B
2
J
3
-40
-30
-20
-10
0
Return Loss & Isolation (dB)
-4
-3
-2
-1
0
Insertion Loss (dB)
Performance vs. DC Bias
F = 28 GHz, Forward Current = 10 mA
-26.0
-5.0
-3.5
-1.0
0.0
Reverse Bias Voltage (V)
Output Return Loss
Input Return Loss
Isolation
Insertion Loss
Typical Performance Data
Bias Arrangement
Circuit Schematic
B
1
B
2
J
1
J
2
J
1
J
3
+10 mA
-5 V
Insertion Loss
Isolation
-5 V
+10 mA
Isolation
Insertion Loss
Truth Table
PDF 
ZIP