HE742 B O WEI 2-Bit Digital step Attenuators BOWEI INTEGRATED CIRCUITS CO.,LTD. Typical Performance Insertion Loss VS. Frequency Features Ta=+85℃ Ta=+25℃ Ta=-55℃ 0 I . L(dB) attenuation:10dB～40dB ●Frequency Range:20～1350MHz ●Thin film coustraction ●Hermetic package SP-2 ●Operating temperature range :-55℃～+85℃ ●Castom -1 -2 Specifications( measured in a 50Ωsystem ,Vcc=±5V, TA=-55℃～+85℃) Frequency Range Insertion loss Steps Attenuation Range Attenuation Accuracy VSWR Symbol fL～fH I.L Unit MHz dB Typical Guaranteed 20～1350 Isolation VS. Frequency -4 15～1350 2.0 -8 1.8 Att dB 10 – A – dB 30.0 dB – ±1 – ±0.5 VSWR Frequency(MHz) Control voltage – – TTL – Control Current Icc mA – 40 -16 20dB -20 -24 -28 1.5:1 2.0:1 10dB -12 VSWR Parameter 1350 750 15 30dB -32 750 15 1350 Frequency(MHz) Absolute Maximum Ratings DC Supply: +6VDC Input Power:+20dBm Storage Temp:+125℃ 8 1 SP-2 Attenuation(dB) Attenuation VS. Frequency 2.2 衰减状态 插损状态 1.8 1.4 1.0 15 Application Notes 750 1350 Frequency(MHz) 1 . Specificed frequency rang, attenuation packages are available 2 . Interexchangable input and output ports HEXXX 3 . Logic 0:Insertion Loss Logic 1:Attenuation 4 . Custom attenuation is available 5 .See assembly section for mounting method 6.ESD observe handing precautions PIN Connection PIN Function 1 2 3 4 PIN Function 20dB 5 Input -5V 6 N/C +5V 7 8 N/C 10dB Output 7.Please add power first when use,make sure control port contact with low level ● TEL:+86-311-87091891 87091887 ● FAX:+86-311-87091282 ● http://www.cn-bowei.com ● E-mail:[email protected] 18