
Alpha Industries, Inc. [781] 935-5150
Fax [617] 824-4579 Email sales@alphaind.com www.alphaind.com
1
Specifications subject to change without notice. 3/99A
GaAs IC Control FET Series
DC–2.5 GHz
AF002C1-39, AF002C4-39
Part Number1
Frequency2
RON (
))33
Insertion Loss (dB)4,5
COFF (pF)6
Isolation (db)5
P-1 dB (W)
(GHz)
Typ.
Max.
Series
Shunt
Typ.
Max.
Series
Shunt
Typ.
AF002C1-39
DC–0.5 GHz
6.4
9.0
0.50
0.10
0.13
0.25
25
12
0.5
DC–1.0 GHz
6.4
9.0
0.60
0.15
0.13
0.25
17
8
1.0
DC–2.5 GHz
6.4
9.0
0.70
0.20
0.13
0.25
13
3
1.0
AF002C4-39
DC–0.5 GHz
0.8
1.1
0.20
0.15
1.10
1.50
11
15
6
DC–1.0 GHz
0.8
1.1
0.25
1.10
1.50
6
9
10
DC–2.5 GHz
0.8
1.1
0.30
2.00
1.10
1.5
3
4
10
Electrical Specifications at 25°C (0, -5 V)
0.045
(1.14 mm)
0.035
(0.89 mm)
0.004 (0.10 mm)
0.0005 (0.01 mm)
0.027 (0.69 mm) REF.
0.007 (0.18 mm)
0.003 (0.08 mm)
0.120 (3.05 mm)
0.110 (2.79 mm)
0.104 (2.64 mm)
0.083 (2.10 mm)
0.055 (1.40 mm)
0.047 (1.19 mm)
0.024 (0.61 mm)
0.018 (0.45 mm)
0.080 (2.03 mm)
0.070 (1.78 mm)
0.018 (0.45 mm)
0.015 (0.38 mm)
3
1
2
0.040 (1.02 mm)
0.037 (0.94 mm)
Features
s Low Cost SOT-23 Package
s Series or Shunt Configuration
s Low DC Current Drain
s Ideal Switch Building Blocks
s Pin Diode Replacements
s High Power Antenna Switches
SOT-23
Description
This group of GaAs control FETs can be used in both
series and shunt configurations. They incorporate on-chip
circuitry that eliminates the need for extra bias
components and minimizes power drain to typically 25 W.
These features make the device ideal replacements for
PIN diodes, where low DC drain is critical.
Isolation performance degrades at higher frequencies due
to package parasitics. They can be tuned out in narrow
band applications as shown in the circuit examples on the
following pages.
Parameter
Condition
Frequency
Min.
Typ.
Max.
Unit
Switching Characteristics
Rise, Fall (10/90% or 90/10% RF)
6
ns
On, Off (50% CTL to 90/10% RF)
12
ns
Control Voltages
VLow = 0 to -0.2 V @ 20 A Max.
VHigh = -5 V @ 50 A to -9 V @ 200 A Max.
Operating Characteristics at 25°C (0, -5 V)
1. All measurements made in a 50
system, unless otherwise specified.
2. DC = 300 kHz.
3. RON - resistance in in low impedance state when “0” V is applied to Gate (G).
4. Insertion loss changes by 0.003 dB/°C.
5. Insertion loss and isolation typical values.
6. COFF - capacitance (pF) in high impedance state when -5 V is applied to Gate (G).