50 Ohm solid-state programmable attenuator with attenuation range 0-95 x 1dB

TTL controlled programmable attenuator

50 Ohm Solid-State Programmable Attenuators (TTL)

A programmable attenuator is a variable attenuator with a specific dB step size and total attenuation.  All of the models in this table are 50 Ohm impedance with solid-state design.  The attenuation steps are controlled via parallel TTL control lines.  JFW has been designing, manufacturing, and delivering programmable attenuators for over 25 years.  For your specific application, please contact JFW for assistance.

Solid-State Design

These attenuator models all have a solid-state design which allows for switching speeds in the microseconds.  With no moving parts, these solid-state step attenuators are perfect for automated RF testing.  The attenuators have typical MTBF of 250,000 hours and excellent attenuation repeatability.

TTL Control

The models listed in the table have parallel TTL lines for the attenuator control lines.  There is a TTL line for each attenuation step.  Activate multiple dB steps simultaneously to set combination attenuation values.  Example: to achieve 7dB of total attenuation activate the 1dB/2dB/4dB steps simultaneously.

Frequently Asked Questions for Programmable Attenuators

JFW Model #ImpedancedB TotaldB StepFrequency StartFrequency StopSwitching SpeedRF Input PowerControlRF Connectors
50P-185150 Ohm63.5 dB0.5 dB200 MHz6000 MHz3 uS+28 dBmTTLSMA
50P-185350 Ohm63 dB1 dB200 MHz6000 MHz1 uS+27 dBmTTLSMA
50P-185550 Ohm31.5 dB0.5 dB200 MHz6000 MHz3 uS+27 dBmTTLSMA
50P-185750 Ohm95 dB1 dB200 MHz6000 MHz4 uS+27 dBmTTLSMA
50P-186750 Ohm31.75 dB0.25 dB30 MHz3000 MHz3 uS+27 dBmTTLSMA
50P-189150 Ohm63.5 dB0.5 dB30 MHz3000 MHz1 uS+27 dBmTTLSMA
50P-189350 Ohm63 dB1 dB30 MHz3000 MHz1 uS+27 dBmTTLSMA
50P-189750 Ohm95 dB1 dB30 MHz3000 MHz4 uS+27 dBmTTLSMA
50P-203750 Ohm127 dB1 dB30 MHz3000 MHz4 uS+27 dBmTTLSMA
50P-207250 Ohm31 dB1 dB100 MHz40000 MHz0.5 uS+20 dBmTTL2.9 mm
50P-210150 Ohm63 dB0.5 dB100 MHz18000 MHz1 uS+24 dBmTTLSMA
50P-198450 Ohm95.5 dB0.5 dB200 MHz6000 MHz4 uS+27 dBmTTLSMA
50P-209950 Ohm63 dB0.5 dB200 MHz8400 MHz1 uS+24 dBmTTLSMA
50P-210950 Ohm95 dB1 dB200 MHz8400 MHz1 uS+24 dBmTTLSMA
50P-206350 Ohm31.75 dB0.25 dB1 MHz3000 MHz3 uS+18 dBmTTLSMA
50P-213050 Ohm95 dB1 dB1 MHz1000 MHz4 uS+18 dBmTTLSMA