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Programmable Attenuators

JFW offers 50 Ohm and 75 Ohm programmable attenuators with either relay or solid-state designs.  We have broken up the online programmable attenuator models into six tables:

Relay Programmable Step Attenuator

Electro-mechanical variable step attenuators are available with 50 Ohm or 75 Ohm impedance.  Each attenuation step is individually controlled.  If you want 3dB total, then you must activate the 1dB step and the 2dB step.  Switching times for these models are in the milliseconds.  The attenuators can be controlled by +Vdc or TTL.  All of these models operate down to DC due to their mechanical design.  Each dB step of the attenuator has typical lifetime of 1 million operations.

Solid-State Programmable Step Attenuator

Solid-state variable step attenuators are available with 50 Ohm or 75 Ohm impedance.  Each attenuation step is individually controlled.  All solid-state models operate over a frequency band (i.e. 200-6000MHz).  Switching times are in the microseconds.  Their solid-state design means that there is no mechanical wear during operation.

Analog Programmable Attenuator

These models are continuously variable stolid-state attenuators available with 50 Ohm or 75 Ohm impedance.  The attenuation level is dependent on the control voltage level.  Typical control voltage range is 0Vdc (maximum dB setting) to +10Vdc (minimum dB setting).