AV109-73 Datasheet, PDF (1/2 Pages) Alpha Industries – GaAs IC 35 dB Voltage Variable Attenuator Single Positive 3 V Control 0.8-1.0 GHz

GaAs IC 35 dB Voltage Variable Attenuator
Single Positive 3 V Control 0.8–1.0 GHz
Preliminary
AV109-73
Features
I Single Positive 3 V Control Voltage
I 35 dB Attenuation Range @ 0.9 GHz
I Excellent Linearity Performance
Description
The AV109-73 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 12 dB/V slope, with input and output VSWR better
than 2:1 over all states. It operates with supply voltage of
+3 V and control voltage of 0 V to +3 V in a low cost
SOT-6 package. The RF ports require 25 pF DC blocking
capacitors. In addition, an external grounding capacitor is
required.
SOT-6
0.074
(1.90 mm REF.)
PIN 6
PIN 1
INDICATOR
PIN 1
0.126 (3.20 mm)
0.087 (2.20 mm)
0.071 (1.80 mm)
0.052 (1.30 mm)
0.020 (0.51 mm)
0.014 (0.350 mm)
0.006
(0.15 mm)
0.000
(0.00 mm)
0.057 (1.45 mm)
0.035 (0.90 mm)
0.037 (0.95 mm) REF.
5.0˚ ± 1˚
0.012
(0.30 mm)
TYP.
0.014
(0.26 mm)
0.004
(0.10 mm)
5.0˚ ± 1˚
0.122 (3.10 mm)
0.106 (2.70 mm)
0.022 (0.61 mm)
0.004 (0.10 mm)
Electrical Specifications at 25°C (V_S = 3 V)
Parameter¹
Insertion Loss (V_C = 0 V)
Maximum Attenuation (V_C = 3 V)²
VSWR (I/O)³
Frequency
0.8–1.0 GHz
0.8–1.0 GHz
0.5–2.5 GHz
Min.
Typ. Max. Unit
3.3
dB
35
dB
2.0:1
Operating Characteristics at 25°C (V_S = 3 V)
Parameter¹
Condition
Switching Characteristics
Rise, On (10/90% or 50% CTL to 90% RF)
Fall, Off (90/10% RF or 50% CTL to 10% RF)
Intermodulation Intercept Point (IIP3)³ For Two-tone Input Power +0 dBm
Control Voltage (V_C)
Supply Voltage (V_S)
Control Current (I_C)
Supply Current (I_S)
1. All measurements made in a 50 Ω system, unless otherwise specified.
2. Maximum attenuation includes insertion loss.
3. For worst case state.
Frequency
0.9 GHz
Min.
0.0
Typ.
1.0
0.3
14
3
0.2 x V_C
150
Max.
V_S
Unit
µS
µS
dBm
V
mA
µA
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [e-mail] • www.alphaind.com
1
Specifications subject to change without notice. 10/99A