器件名称:
HE411A
功能描述:
Voltage Variable Attenuators
文件大小:
65.65KB 共1页
简 介:
B O WEI BOWEI INTEGRATED CIRCUITS CO.,LTD. HE411A Voltage Variable Attenuators Typical Performance Attenuation VS. Frequency 0 10 15V 6V 3.5V 3V 0V Attenuation(dB) 20 30 40 50 60 70 0 100 200 300 Features ●Thin film coustraction ●Hermetic package TO-8B ●Operating temperature range : -55℃ ~+85℃ 400 500 Frequency(MHz) Specifications( measured in a 50Ωsystem ,Vcc=+15V, TA=-55℃~+85℃) Parameter Frequency Range Attenuation(Max) Insertion loss DC Supply DC Current Control voltage Control Current Symbol fL~fH AMax IL VCC ICC VCO ICO VSWR VS. Frequency 2.2 Unit MHz dB dB Guaranteed 5~500 31 2. 5 2.0:1 Typical – 33 2. 1 1.4:1 +15 14 0~15 0~7 0 0 100 200 300 400 500 2.0 VSWR 1.8 1.6 1.4 1.2 1.0 VSWRo VSWRi VSWR of input/output VSWR – V mA V mA – – – – Frequency(MHz) Attenuation VS. Temperature Attenuation(dB) 15V 6 6V Absolute Maximum Ratings DC Supply: +18VDC Input Power:+20dBm Storage Temp:+125℃ 5 4 3 1 2 12 4V 18 Ta=+25℃ Ta=+85℃ Ta= - 55℃ TO- 8B Application Notes 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 1 2 5 4 0 100 200 300 400 500 Frequency(MHz) 0 Attenuation VS. Control voltage Attenuation(dB) 15 30 f=500MHz HExxx 3 1.VCC 2.RF input 3.GND 4.RF output 5.VCO 45 f=70MHz 0 3 6 9 12 15 Control voltage(V) ● TEL:+86-311-87091891 87091887 ● FAX:+86-311-87091……