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VIDEO_ATTENUATOR

2016-09-11 19:43  
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VIDEO_ATTENUATOR
FETs in T attenuator provide optimum dynamic linear range for at-tenuation of video signals with ganged 1-meg-ohm pots. If complete turnoff is desired, atten-uatlon greater than 100 dB can be obtained at 10 MHz by using appropriate RF construction to minimize leakage. ON resistance of transistor (between drain and source) is less than 30 ohms.- FET Databook, National Semicon-ductor, Santa Clara, CA, 1977, p 6-26-6-36.