Preliminary
GaAs IC 35 dB Voltage Variable Attenuator
Single Positive 3 V Control 0.5–2.5 GHz
AV107-59
Features
MSOP-8
■ Single Positive +3 V Control Voltage
0.0256 (0.65 mm) TYP.
■ 35 dB Attenuation Range @ 0.9 GHz
■ Miniature Low Cost MSOP-8 Package
PIN 1
INDICATOR
0.118 (3.00 mm)
± 0.004 (0.1 mm)
0.193 (4.90 mm)
REF.
SQ.
+ 0.006 (0.15 mm)
- 0.002 (0.05 mm)
Description
PIN 1
0.012 (0.30 mm)
The AV107-59 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. Its attenuation range at 1900 MHz
is 25 dB. It operates with supply voltage of +3 V and control
voltage of 0 V to +3 V in a low cost MSOP-8 package.The
RF ports require 25 pF DC blocking capacitors. In addition
an external grounding capacitor is required.
7.0˚
TYP.
0.038 (0.95 mm)
0.030 (0.75 mm)
0.007 (0.18 mm)
± 0.005 (0.12 mm)
0.017
(0.43 mm)
8.0˚
MAX.
0.006 (0.15 mm)
0.002 (0.05 mm)
0.028 (0.70 mm)
0.016 (0.40 mm)
Electrical Specifications at 25°C (V = 3 V)
S
1
Parameter
Frequency
Min.
Typ.
Max.
Unit
Insertion Loss (V = 0 V)
0.5–1.0 GHz
1.0–2.0 GHz
2.0–2.5 GHz
3.4
3.5
3.8
3.8
4.0
4.3
dB
dB
dB
C
2
Maximum Attenuation (V = 3 V)
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
22
30
22
17
15
25
33
25
20
19
dB
dB
dB
dB
dB
C
3
VSWR (I/O)
0.5–2.5 GHz
1.8:1
2.0:1
Operating Characteristics at 25°C (V = 3 V)
S
Parameter
Condition
Frequency
Min.
Typ.
Max.
Unit
Switching Characteristics
Rise, On (10/90% or 50% CTL to 90% RF)
Fall, Off (90/10% RF or 50% CTL to 10% RF)
1.0
0.3
µS
µS
3
Intermodulation Intercept Point (IIP3)
For Two-tone Input Power +0 dBm
0.9 GHz
15
dBm
V
Control Voltage (V )
0.0
2.7
V
S
C
Supply Voltage (V )
3
0.2 x V
150
V
S
Control Current (I )
mA
µA
C
C
Supply Current (I )
S
1. All measurements made using 40 pF RF bypass capacitor.
2. Maximum attenuation includes insertion loss.
3. For worst case state.
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