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.

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.

For your specific application, please contact JFW for assistance.

JFW Model #	Impedance	dB Total	dB Step	Frequency Start	Frequency Stop	Switching Speed	RF Input Power	Control	RF Connectors
50P-1851	50 Ohm	63.5 dB	0.5 dB	200 MHz	6000 MHz	3 uS	+28 dBm	TTL	SMA
50P-1853	50 Ohm	63 dB	1 dB	200 MHz	6000 MHz	3 uS	+27 dBm	TTL	SMA
50P-1855	50 Ohm	31.5 dB	0.5 dB	200 MHz	6000 MHz	3 uS	+27 dBm	TTL	SMA
50P-1857	50 Ohm	95 dB	1 dB	200 MHz	6000 MHz	4 uS	+27 dBm	TTL	SMA
50P-1867	50 Ohm	31.75 dB	0.25 dB	30 MHz	3000 MHz	3 uS	+27 dBm	TTL	SMA
50P-1891	50 Ohm	63.5 dB	0.5 dB	30 MHz	3000 MHz	4 uS	+27 dBm	TTL	SMA
50P-1893	50 Ohm	63 dB	1 dB	30 MHz	3000 MHz	3 uS	+27 dBm	TTL	SMA
50P-1897	50 Ohm	95 dB	1 dB	30 MHz	3000 MHz	4 uS	+27 dBm	TTL	SMA
50P-2037	50 Ohm	127 dB	1 dB	30 MHz	3000 MHz	4 uS	+27 dBm	TTL	SMA
50P-2072	50 Ohm	31 dB	1 dB	100 MHz	40000 MHz	0.5 uS	+20 dBm	TTL	2.9 mm
50P-2101	50 Ohm	63 dB	0.5 dB	100 MHz	18000 MHz	1 uS	+24 dBm	TTL	SMA
50P-1984	50 Ohm	95.5 dB	0.5 dB	200 MHz	6000 MHz	4 uS	+27 dBm	TTL	SMA
50P-2099	50 Ohm	63 dB	0.5 dB	200 MHz	8400 MHz	1 uS	+24 dBm	TTL	SMA
50P-2109	50 Ohm	95 dB	1 dB	200 MHz	8400 MHz	1 uS	+24 dBm	TTL	SMA
50P-2063	50 Ohm	31.75 dB	0.25 dB	1 MHz	3000 MHz	3 uS	+18 dBm	TTL	SMA
50P-2130	50 Ohm	95 dB	1 dB	1 MHz	1000 MHz	4 uS	+18 dBm	TTL	SMA
50P-2070	50 Ohm	63.75 dB	0.25 dB	30 MHz	3000 MHz	4 uS	+27 dBm	TTL	SMA