English
Language : 

AV105-12 Datasheet, PDF (1/3 Pages) Alpha Industries – GaAs IC 35 dB Voltage Variable Attenuator Single Positive Control 0.5-2.5 GHz
GaAs IC 35 dB Voltage Variable Attenuator
Single Positive Control 0.5–2.5 GHz
Features
s Single Positive +5 V Control Voltage
s 35 dB Attenuation Range @ 0.9 GHz
s Excellent Linearity Performance
Description
The AV105-12 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 8 dB/V slope, with input and output VSWR better
than 1.4:1 over all states. Its attenuation range at 1900
MHz is 31 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 25 pF DC blocking
capacitors.
SOIC-8
PIN 8
PIN 1
INDICATOR
PIN 1
0.068
(1.73 mm) MAX.
0.197 (5.00 mm)
0.189 (4.80 mm)
0.010 (0.25 mm)
0.004 (0.10 mm)
Preliminary
AV105-12
0.050 (1.27 mm) BSC
0.244 (6.20 mm)
0.228 (5.80 mm)
0.020 (0.51 mm) MAX.
0.049
(1.24 mm)
0.016
(0.41 mm)
0.016 MAX.
(0.41 mm) x
45˚ CHAMFER
8˚
MAX.
0.158 (4.00 mm)
0.150 (3.80 mm)
0.010 (0.25 mm)
0.007 (0.17 mm)
Electrical Specifications at 25°C (VS = 5 V)
Parameter1
Insertion Loss (VC = 5 V)
Maximum Attenuation (VC = 0 V)2
VSWR (I/O)3
Frequency
0.5–1.0 GHz
1.0–2.0 GHz
2.0–2.5 GHz
0.5–0.8 GHz
0.8–1.0 GHz
1.0–1.7 GHz
1.7–2.0 GHz
2.0–2.5 GHz
0.5–2.5 GHz
Min.
25
35
32
28
26
Typ. Max. Unit
2.8
3.1
dB
3.2
3.6
dB
3.5
3.8
dB
33
dB
38
dB
35
dB
31
dB
30
dB
1.8:1
Operating Characteristics at 25°C (VS = 5 V)
Parameter
Condition
Frequency
Min.
Typ. Max. Unit
Switching Characteristics
Intermodulation Intercept Point (IIP3)3
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
0.9 GHz
350
nS
250
nS
15
dBm
Control Voltage (VC)
Supply Voltage (VS)
Control Current (IC)
Supply Current (IS)
1. All measurements made in a 50 Ω system, unless otherwise specified.
2. Maximum attenuation includes insertion loss.
3. For worst case state.
0.0
VS
V
5.0
V
800
µA
800
µA
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
 ▷