Preliminary
GaAs IC 30 dB Voltage Variable Attenuator
Single Positive 3 V Control 1.7–2.5 GHz
AV110-73
Features
I
Single Positive 3 V Control Voltage
I
33 dB Attenuation Range @ 1.9 GHz
I
Excellent Linearity Performance
SOT-6
0.074
(1.90 mm REF.)
PIN 6
PIN 1
INDICATOR
PIN 1
0.020 (0.51 mm)
0.014 (0.350 mm)
0.057 (1.45 mm)
0.035 (0.90 mm)
0.126 (3.20 mm)
0.087 (2.20 mm)
0.071 (1.80 mm)
0.052 (1.30 mm)
Description
The AV110-73 GaAs IC FET voltage variable attenuator
provides 33 dB attenuation range at 1900 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.
0.037 (0.95 mm) REF.
0.012
(0.30 mm)
TYP.
0.014
(0.26 mm)
0.004
(0.10 mm)
5.0˚ ± 1˚
0.006
(0.15 mm)
0.000
(0.00 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)
Parameter
1
Insertion Loss (V
C
= 0 V)
Maximum Attenuation (V
C
= 3 V)
2
VSWR (I/O)
3
Frequency
1.7–2.0 GHz
2.0–2.5 GHz
1.7–2.0 GHz
2.0–2.5 GHz
1.7–2.5 GHz
Min.
Typ.
3.5
3.8
33
28
2.0:1
Max.
Unit
dB
dB
dB
dB
Operating Characteristics at 25°C (V
S
= 3 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
Ω
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.
1.0
0.3
Max.
Unit
µS
µS
dBm
0.9 GHz
0.0
12
V
S
3
0.2 x V
C
150
V
mA
µA
Alpha Industries, Inc.
[781] 935-5150
•
Fax
[617] 824-4579
•
Email
sales@alphaind.com
•
www.alphaind.com
Specifications subject to change without notice. 10/99A
1
ALPHA [ ALPHA INDUSTRIES ]
