Preliminary
GaAs IC 35 dB Voltage Variable Attenuator
Single Positive Control 0.5鈥?.5 GHz
AV103-12
Features
I
Single Positive +5 V Control Voltage
I
35 dB Attenuation Range @ 0.9 GHz
I
Less Than 鹵1 dB Attenuation Change Over
Temperature
I
Excellent Linearity Performance
PIN 1
INDICATOR
0.244 (6.20 mm)
0.228 (5.80 mm)
SOIC-8
PIN 8
0.050 (1.27 mm) BSC
PIN 1
0.068
(1.73 mm) MAX.
0.020 (0.51 mm) MAX.
0.049
(1.24 mm)
0.016
(0.41 mm)
0.016 MAX.
(0.41 mm) x
45藲 CHAMFER
Description
The AV103-12 GaAs IC FET voltage variable attenuator
provides 35 dB attenuation range at 900 MHz controlled
by a single positive voltage. The VVA has a linear transfer
curve of 9 dB/V slope, with input and output VSWR better
than 2.1:1 over all states. Its attenuation range at 1900
MHz is 33 dB. It operates with supply voltage of +5 V and
control voltage of 0 V to +5 V in a low cost SOIC-8
package. The RF ports require 100 pF DC blocking
capacitors.
0.197 (5.00 mm)
0.189 (4.80 mm)
0.010 (0.25 mm)
0.004 (0.10 mm)
0.158 (4.00 mm)
0.150 (3.80 mm)
0.010 (0.25 mm)
0.007 (0.17 mm)
8藲
MAX.
Electrical Specifications at 25擄C (V
S
= 5 V)
Parameter
1
Insertion Loss (V
C
= 5 V)
Frequency
0.5鈥?.0 GHz
1.0鈥?.0 GHz
2.0鈥?.5 GHz
0.5鈥?.8
0.8鈥?.0
1.0鈥?.7
1.7鈥?.0
2.0鈥?.5
GHz
GHz
GHz
GHz
GHz
28
31
30
29
28
Min.
Typ.
2.5
2.8
3.2
32
35
34
33
32
2.1:1
Max.
2.7
3.0
3.4
Unit
dB
dB
dB
dB
dB
dB
dB
dB
Maximum Attenuation (V
C
= 0 V)
2
VSWR (I/O)
3
0.5鈥?.5 GHz
Operating Characteristics at 25擄C (V
S
= 5 V)
Parameter
1
Switching Characteristics
Intermodulation Intercept Point (IIP3)
3
Control Voltage (V
C
)
Supply Voltage (V
S
)
Control Current (I
C
)
Supply Current (I
S
)
1. All measurements made in a 50
鈩?/div>
system, unless otherwise specified.
2. Maximum attenuation includes insertion loss.
3. For worst case state.
Condition
Rise, On (10/90% or 50% CTL to 90% RF)
Fall, Off (90/10% RF or 50% CTL to 10% RF)
For Two-tone Input Power 0 dBm
Frequency
Min.
Typ.
130
60
Max.
Unit
nS
nS
dBm
0.9 GHz
0.0
12
V
S
5.0
1.1 x V
C
150
V
V
mA
碌A(chǔ)
Alpha Industries, Inc.
[781] 935-5150
鈥?/div>
Fax
[617] 824-4579
鈥?/div>
Email
sales@alphaind.com
鈥?/div>
www.alphaind.com
Specifications subject to change without notice. 12/99A
1
1
2
3
