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
Parameter
Condition
Frequency
Min.
Typ.
Max.
Unit
Switching Characteristics
Rise, On (10/90% or 50% CTL to 90% RF)
1.0
S
Fall, Off (90/10% RF or 50% CTL to 10% RF)
0.3
S
Intermodulation Intercept Point (IIP3)
3
For Two-tone Input Power +0 dBm
0.9 GHz
15
dBm
Control Voltage (V
C
)
0.0
V
S
V
Supply Voltage (V
S
)
2.7
3
V
Control Current (I
C
)
0.2 x V
C
mA
Supply Current (I
S
)
150
A
GaAs IC 35 dB Voltage Variable Attenuator
Single Positive 3 V Control 0.52.5 GHz
Features
s
Single Positive +3 V Control Voltage
s
35 dB Attenuation Range @ 0.9 GHz
s
Miniature Low Cost MSOP-8 Package
MSOP-8
AV107-59
0.012 (0.30 mm)
PIN 1
PIN 1
INDICATOR
+ 0.006 (0.15 mm)
7.0
TYP.
0.038 (0.95 mm)
0.030 (0.75 mm)
0.017
(0.43 mm)
8.0
MAX.
0.028 (0.70 mm)
0.016 (0.40 mm)
0.007 (0.18 mm)
0.005 (0.12 mm)
0.006 (0.15 mm)
0.002 (0.05 mm)
- 0.002 (0.05 mm)
0.0256 (0.65 mm) TYP.
0.118 (3.00 mm)
0.004 (0.1 mm)
SQ.
0.193 (4.90 mm)
REF.
Description
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.
Parameter
1
Frequency
Min.
Typ.
Max.
Unit
Insertion Loss (V
C
= 0 V)
0.51.0 GHz
3.4
3.8
dB
1.02.0 GHz
3.5
4.0
dB
2.02.5 GHz
3.8
4.3
dB
Maximum Attenuation (V
C
= 3 V)
2
0.50.8 GHz
22
25
dB
0.81.0 GHz
30
33
dB
1.01.7 GHz
22
25
dB
1.72.0 GHz
17
20
dB
2.02.5 GHz
15
19
dB
VSWR (I/O)
3
0.52.5 GHz
1.8:1
2.0:1
Electrical Specifications at 25C (V
S
= 3 V)
Operating Characteristics at 25C (V
S
= 3 V)
1. All measurements made using 40 pF RF bypass capacitor.
2. Maximum attenuation includes insertion loss.
3. For worst case state.
Preliminary
GaAs IC 35 dB Voltage Variable Attenuator Single Positive 3 V Control 0.52.5 GHz
AV107-59
2
Alpha Industries, Inc. [781] 935-5150
Fax [617] 824-4579
Email sales@alphaind.com
www.alphaind.com
Specifications subject to change without notice. 3/99A
2.5
2.0
Frequency (GHz)
Insertion Loss vs. Frequency
I
n
s
e
r
t
i
o
n
L
o
s
s
(
d
B
)
0.5
1.0
1.5
-5.0
-4.5
-4.0
-3.5
-3.0
-2.5
-2.0
-1.5
-1.0
-0.5
0.0
2.5
2.0
3.0
1.5
V
C
(V)
Attenuation vs. Control Voltage
A
t
t
e
n
u
a
t
i
o
n
(
d
B
)
0
0.5
1.0
-40
-35
-30
-25
-20
-15
-10
-5
0
2.50
2.00
Frequency (GHz)
Maximum Attenuation vs. Frequency
M
a
x
i
m
u
m
A
t
t
e
n
u
a
t
i
o
n
(
d
B
)
0.50
1.00
1.50
-40
-35
-30
-25
-20
-15
-10
-5
0
Typical Performance Data @ 0.9 GHz
(Unless Otherwise Specified)
V
C
(V)
VSWR vs. Control Voltage
V
S
W
R
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
Input
Output
-40 to +85
2.5
2.0
3.0
1.5
0
0.5
1.0
2.0
2.5
3.0
1.5
V
C
(V)
Input IP3 vs. Control Voltage
I
I
P
3
(
d
B
m
)
0
0.5
1.0
0
5
10
15
20
25
30
2.0
2.5
3.0
1.5
V
C
(V)
Attenuation vs. Control Voltage
Over Temperature
I
n
s
e
r
t
i
o
n
L
o
s
s
(
d
B
)
0
0.5
1.0
-5
-4
-3
-2
-1
0
1
2
3
4
5
+25C
+85C
+70C
-20C
Attenuation Normalized to 25C
GaAs IC 35 dB Voltage Variable Attenuator Single Positive 3 V Control 0.52.5 GHz
AV107-59
Alpha Industries, Inc. [781] 935-5150
Fax [617] 824-4579
Email sales@alphaind.com
www.alphaind.com
3
Specifications subject to change without notice. 3/99A
GaAs IC 35 dB Voltage Variable Attenuator Single Positive 3 V Control 0.52.5 GHz
AV107-59
1
2
3
4
8
7
6
5
GND
GND
GND
V
S
J
1
V
C
J
2
GND
C
BL
C
BL
C
BP
Characteristic
Value
RF Input Power
50 mW > 500 MHz
Supply Voltage
+7 V
Control Voltage
+3.3 V
Operating Temperature
-40C to +85C
Storage Temperature
-65C to +150C
JC
25C/W
Absolute Maximum Ratings
Pin Out
DC blocking capacitors (C
BL
) and RF bypass capacitors (C
BP
) supplied
externally.
C
BP
= 40 pF for 900 MHz operation.
C
BL
= 25 pF for 900 MHz operation.
Note: Exceeding these parameters may cause irreversible damage.
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