HE412B B O WEI Voltage Variable Attenuators BOWEI INTEGRATED CIRCUITS CO.,LTD. Typical Performance Attenuation VS. Frequency 0 15V 1.5V Attenuation(dB) 10 Features ●Thin film coustraction ●Hermetic package TO-8B ●Operating temperature range: -55℃ ～+85℃ 0.8V 0.7V 0V 20 30 40 50 60 70 0 200 400 600 800 1000 Frequency(MHz) Specifications( measured in a 50Ωsystem ,Vcc=+15V, TA=-55℃～+85℃) Parameter Unit Guaranteed Typical 2.2 Frequency Range fL～fH MHz 20～1000 – Attenuation(Max) AMax dB 24 26 Insertion loss IL dB 2.0 1. 5 – 2.0:1 1.5: 1 V mA – +15 – 14 V – 0～15 mA – 0～7 VSWR of input/output VSWR DC Supply VCC DC Current ICC Control voltage VCO ICO Control Current VSWR VS. Frequency 2.0 VSWR Symbol 1.8 VSWRo 1.6 VSWRi 1.4 1.2 1.0 0 200 400 600 800 1000 Frequency(MHz) Attenuation VS. Temperature Absolute Maximum Ratings 5 DC Supply: +18VDC Input Power:+20dBm Storage Temp:+125℃ 1 2 4 3 TO- 8B Attenuation(dB) 0 6 1.5V 12 1V 18 Ta=+25℃ Ta=+85℃ Ta= - 55℃ Application Notes 0 5 1 4 2 HExxx 3 1.VCC 2.RF input 3.GND 4.RF output 5.VCO 400 600 800 1000 Frequency(MHz) Attenuation VS .Control voltage 0 f=1000MHz Attenuation(dB) 1.Functional schematic shown as following,which include an internal coupling capacitor. 2.Interexchangable input and output ports 3.Cascaded with amplifier can be used as VGC amplifier 4.See assembly section for mounting method 200 10 20 30 0 3 6 9 12 15 Control voltage(V) ● TEL:+86-311-87091891 87091887 ● FAX:+86-311-87091282 ● http://www.cn-bowei.com ● E-mail:[email protected] 9