HIP3™ Variable Attenuator 1.70–2.00 GHz AV102-12 Features ■ +50 dBm IP3 Typical ■ Low Loss 1 dB Typical ■ Attenuation 30 dB Typical ■ Good VSWR <1.5:1 Typical ■ Small SOIC-8 Package Description The AV102-12 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. Electrical Specifications at 25°C Parameter Min. Frequency Typ. 1.70 Insertion Loss (0 mA Control Current) 1 Attenuation @ 3.0 mA Control Current (1850 MHz) 18.5 VSWR All Ports 1.5 Input 3rd Order Intercept +47 Group Delay Max. Unit 2.00 GHz 1.5 dB 25.0 dB 1.8 +50 dBm 0.6 1.0 ns Typ. Max. Unit 5 8 2 µs µs mV Operating Characteristics at 25°C (0, +5 V) Parameter1 Switching Characteristics2 Condition Frequency Min. Rise, Fall (10/90% or 90/10% RF) On, Off (50% CTL to 90/10% RF) Video Feedthru (Peak) Maximum Input Power for <1 dB Attenuation Variation +15 dBm 1. All measurements made in a 50 Ω system, unless otherwise specified. 2. 0–4 mA square wave total control current. Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 6/01A 1 HIP3™ Variable Attenuator 1.70–2.00 GHz AV102-12 1.5 0.0 1.4 -10.0 Attenuation (dB) VSWR (:1) Typical Performance Data 1.3 Output 1.2 1.1 Input 1.0 0.0000 0.0010 0.0020 0.0030 0.0040 1700 MHz -20.0 1850 MHz -30.0 2000 MHz -40.0 -50.0 0.0000 0.0050 Current (Amps) 0.0010 0.0020 0.0030 0.0040 0.0050 Current (Amps) Input/Output VSWR vs. Current @ 1700 MHz Attenuation vs. Current 1.5 0.0 1.4 -5.0 0.0 mA Attenuation (dB) VSWR (:1) 0.2 mA 1.3 1.2 Input 0.7 mA -10.0 1.7 mA -15.0 2.4 mA -20.0 1.1 Output 1.0 0.0000 0.0010 0.0020 3.0 mA 0.0030 0.0040 -25.0 1.70 0.0050 Frequency (GHz) Input/Output VSWR vs. Current @ 1850 MHz Attenuation vs. Frequency Diode Current (mA) VSWR (:1) 2.00 10 1.4 1.3 Input 1.2 Output 1.0 0.0000 2 1.90 Current (Amps) 1.5 1.1 1.80 1 0.1 0.01 0.0010 0.0020 0.0030 0.0040 0.0050 400 600 800 1000 Current (Amps) Diode Voltage (mV) Input/Output VSWR vs. Current @ 2000 MHz Typical PIN Diode Current vs. Voltage Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 6/01A HIP3™ Variable Attenuator 1.70–2.00 GHz Pin Out AV102-12 Connection Diagram 680 Ω CONTROL CURRENT RF OUT 220 pF 220 pF 100 nH 100 nH CONTROL CURRENT 1 8 CONTROL CURRENT GND 2 7 GND CONTROL CURRENT RF IN 6 GND 5 4 RF In 3 GND RF Out SOIC-8 PIN 8 0.050 (1.27 mm) BSC Absolute Maximum Ratings Characteristic Value RF Input Power .5 W CW, 4 W @ 12.5% Duty Cycle Control Current 50 mA Each Diode Operating Temperature -40 to +85°C Storage Temperature -40 to +85°C Maximum Reverse Diode Voltage -10 V Electrostatic Discharge 0.244 (6.20 mm) 0.228 (5.80 mm) PIN 1 INDICATOR PIN 1 0.068 (1.73 mm) MAX. 0.020 (0.51 mm) MAX. 0.049 (1.24 mm) 0.016 (0.41 mm) 0.016 MAX. (0.41 mm) x 45˚ CHAMFER +125 V Note: Operating this device above any of these parameters may cause irreversible damage. 0.197 (5.00 mm) 0.189 (4.80 mm) 0.010 (0.25 mm) 0.004 (0.10 mm) Recommended Board Layout 0.158 (4.00 mm) 0.150 (3.80 mm) 0.010 (0.25 mm) 0.007 (0.17 mm) 8˚ MAX. 0.1630 0.0200 DIA. VIA 4 PLACES 0.0555 TYP. 0.0190 TYP. Material is 10 mil FR4. Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 6/01A 3