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Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com 1
Specifications subject to change without notice. 6/01A
HIP3™ Variable Attenuator
0.80–1.00 GHz
Features
■ +50 dBm IP3 Typical
■ Low Loss 1 dB Typical
■ Attenuation 30 dB Typical
■ Good VSWR <1.5:1 Typical
■ Small SOIC-8 Package
AV101-12
Description
The AV101-12 is a current controlled variable attenuator
from Alpha’s series of HIP3™ components. It is designed
to meet the wide dynamic range required in spread
spectrum wireless base station applications. A monolithic
quadrature hybrid is teamed with a silicon PIN diode pair
in a plastic surface mount package reducing size and
assuring consistency from part to part.
Parameter Min. Typ. Max. Unit
Frequency 0.80 1.00 GHz
Insertion Loss (0 mA Control Current) 1 1.5 dB
Attenuation @ 3.0 mA Control Current (900 MHz) 18.5 21.5 dB
VSWR All Ports 1.5 1.8
Input 3rd Order Intercept +47 +50 dBm
Group Delay 0.9 1.2 ns
Electrical Specifications at 25°C
SOIC-8
SOIC-8
Parameter
1
Condition Frequency Min. Typ. Max. Unit
Switching Characteristics
2
Rise, Fall (10/90% or 90/10% RF) 5 µs
On, Off (50% CTL to 90/10% RF) 8 µs
Video Feedthru (Peak) 5 mV
Maximum Input Power for <1 dB
Attenuation Variation +15 dBm
Operating Characteristics at 25°C (0, +5 V)
1. All measurements made in a 50 Ω system, unless otherwise specified.
2. 0–4 mA square wave total control current.
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2 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com
Specifications subject to change without notice. 6/01A
HIP3™ Variable Attenuator 0.80–1.00 GHz AV101-12
VSWR (:1)
Input/Output VSWR vs. Current
@ 800 MHz
1.0
1.1
1.2
1.3
1.4
1.5
0.0000 0.0010 0.0020 0.0030 0.0040 0.0050
Current (Amps)
Input
Output
VSWR (:1)
Input/Output VSWR vs. Current
@ 900 MHz
1.0
1.1
1.2
1.3
1.4
1.5
Current (Amps)
Input
Output
0.0000 0.0010 0.0020 0.0030 0.0040 0.0050
Attenuation (dB)
0.0000 0.0010 0.0020 0.0030 0.0040 0.0050
Attenuation vs. Current
-70.0
-50.0
-60.0
-40.0
-30.0
-20.0
-10.0
0.0
Current (Amps)
800 MHz
900 MHz
1000 MHz
Attenuation (dB)
0.80 0.85 0.90 0.95 1.00
Attenuation vs. Frequency
-25.0
-20.0
-15.0
-10.0
-5.0
0.0
Frequency (GHz)
0.0 mA
0.2 mA
0.9 mA
1.9 mA
2.8 mA
3.5 mA
Input/Output VSWR vs. Current
@ 1000 MHz
1.0
1.1
1.2
1.3
1.4
1.5
Current (Amps)
Input
Output
VSWR (:1)
0.0000 0.0010 0.0020 0.0030 0.0040 0.0050
Diode Current (mA)
400 600 800 1000
Typical PIN Diode Current vs. Voltage
0.01
0.1
1
10
Diode Voltage (mV)
Typical Performance Data
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HIP3™ Variable Attenuator 0.80–1.00 GHz AV101-12
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com 3
Specifications subject to change without notice. 6/01A
Characteristic Value
RF Input Power 0.5 W CW, 4 W @ 12.5%
Duty Cycle
Control Current 50 mA per Diode
Operating Temperature -40 to +85°C
Storage Temperature -40 to +85°C
Maximum Reverse Diode Voltage -10 V
Electrostatic Discharge +125 V
Absolute Maximum Ratings
Note: Operating this device above any of these parameters may cause
irreversible damage.
Recommended Board Layout
0.1630
0.0200 DIA.
VIA 4 PLACES
0.0190 TYP.0.0555 TYP.
SOIC-8
0.049
(1.24 mm)
0.016
(0.41 mm)
0.016 MAX.
(0.41 mm) x
45˚ CHAMFER
PIN 1
0.197 (5.00 mm)
0.189 (4.80 mm)
0.068
(1.73 mm) MAX.
0.010 (0.25 mm)
0.004 (0.10 mm)
0.010 (0.25 mm)
0.007 (0.17 mm)
0.158 (4.00 mm)
0.150 (3.80 mm)
8˚
MAX.
0.020 (0.51 mm) MAX.
0.244 (6.20 mm)
0.228 (5.80 mm)
0.050 (1.27 mm) BSC
PIN 8
PIN 1
INDICATOR
123 4
CONTROL
CURRENT
GND
220 pF
RF In
GND
680 Ω
876 5
GND
220 pF
100 nH 100 nH
RF Out
CONTROL
CURRENT
GND
Pin Out
CONTROL
CURRENT
CONTROL
CURRENT
RF OUT
RF IN
Connection Diagram
Material is 10 mil FR4.
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