HE741 B O WEI 1-Bit Digital step Attenuators BOWEI INTEGRATED CIRCUITS CO.,LTD. Typical Performance Insertion Loss VS .Frequency I . L(dB) -55℃ +25℃ 2.6 +85℃ Features 0 -1 -2 ●Accurate attenuation ●Frequency Range:15～1350MHz ●Hermetic package TO-8E ●Operating temperature range : -55℃ ～+85℃ -3 15 Typical Guaranteed Frequency Range fL～fH MHz Insertion loss I.L dB 1.8 1.3 Attenuation(Max) AMax dB 20.0 20.0 – ±0.5 ±0.3 VSWR dB – 2.0:1 1.5:1 V co – TTL – Attenuation Accuracy VSWR Control voltage Switching speed T on t DC IC current us mA – 15～1350 2.0( T on ) 1.5( T on ) 2.0( T off ) 1.5(T off ) 25 – “ △ ” Measured at TC=24±1℃ Absolute Maximum Ratings DC Supply: ±6VDC Input Power:+20dBm Storage Temp:+125℃ 6 5 1 4 VSWRo 2.0 2 3 TO - 8E VSWRi 1.8 VSWR Unit 1.6 1.4 1.2 1.0 15 750 1500 Frequency(MHz) Attenuation VS. Frequency Attenuation(dB) Symbol 1500 VSWR VS .Frequency Specifications( measured in a 50Ωsystem ,Vcc=±5V, TA=-55℃～+85℃) Parameter 750 Frequency(MHz) 16 -55℃ +25℃ 2.6 +85℃ 18 20 22 15 750 1500 Frequency(MHz) Application Notes 1 . Specificed frequency rang, attenuation packages are available 3 . Logic 0:Insertion Loss ; Logic 1:Attenuation 2 . Interexchangable input and output ports HEXXX 4. See assembly section for mounting method 5. Custom attenuation (3. 0～32. 0dB) is available 6.ESD observe handing precautions 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] 17