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AV104-12 Datasheet, PDF (1/3 Pages) Alpha Industries – GaAs IC 25 dB Voltage Variable Attenuator Single Positive Control 0.5-2.5 GHz
GaAs IC 25 dB Voltage Variable Attenuator
Single Positive Control 0.5–2.5 GHz
Features
s Single Positive +5 V Control Voltage
s 25 dB Attenuation Range @ 0.9 GHz
s High IP3 (20 dBm @ 0.9 GHz)
s Excellent Linearity Performance
Description
The AV104-12 GaAs IC FET voltage variable attenuator
provides 25 dB attenuation range at 900 MHz controlled
by a single positive voltage. The VVA has a linear transfer
curve of 5 dB/V slope, with input and output VSWR better
than 1.4:1 over all states. Its attenuation range at 1900
MHz is 22 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
AV104-12
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.
16
21
19
17
15
Typ. Max. Unit
2.7
3.0
dB
3.0
3.4
dB
3.2
3.7
dB
20
dB
25
dB
23
dB
21
dB
19
dB
1.4:1
Operating Characteristics at 25°C (VS = 5 V)
Parameter
Switching Characteristics
Intermodulation Intercept Point (IIP3)3
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
0.9 GHz
Min.
Typ.
1.0
1.5
20
Max.
Unit
µS
µS
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
2.5
mA
2.5
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
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