75 Ohm Solid-State Programmable Attenuators
A programmable attenuator is a variable attenuator with a specific dB step size and total attenuation. All of the models in this table are 75 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 6dB of total attenuation activate the 2dB/4dB steps simultaneously.
Frequently Asked Questions for Programmable Attenuators
JFW Model # | dB Total | dB Step | Frequency Start | Frequency Stop | Switching Speed | RF Input Power | Control | RF Connectors |
---|---|---|---|---|---|---|---|---|
75P-173 | 127 dB | 1 dB | 450 MHz | 2150 MHz | 2 uS | +20 dBm | TTL | BNC, F, N |
75P-176 | 127 dB | 1 dB | 50 MHz | 1000 MHz | 2 uS | +10 dBm | TTL | BNC, F, N |
75P-177 | 127 dB | 1 dB | 50 MHz | 2000 MHz | 2 uS | +10 dBm | TTL | F |
75P-217 | 95 dB | 1 dB | 5 MHz | 2150 MHz | 2 uS | +23 dBm | TTL | F Female |
75P-223 | 63.75 dB | 0.25 dB | 5 MHz | 2150 MHz | 2 uS | +23 dBm | TTL | BNC, F, N |
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Programmable Attenuator 5-2150 MHz 0-63.75dB x 0.25dB | 75P-223
JFW Model #: 75P-223
Type: Solid-state programmable attenuator
Impedance: 75 Ohm
dB Total: 63.75 dB
dB Step: 0.25 dB
Frequency Range: 5-2150 MHz
Switching Speed: 2 mS
RF Input Power: +23 dBm
RF Connectors: BNC, F or N female
Documentation: Data Sheet | Drawing -
Programmable Attenuator 5-2150 MHz 0-95dB x 1dB | 75P-217
JFW Model #: 75P-217
Type: Solid-state programmable attenuator
Impedance: 75 Ohm
dB Total: 95 dB
dB Step: 1 dB
Frequency Range: 5-2150 MHz
Switching Speed: 2 mS
RF Input Power: +23 dBm
RF Connectors: BNC, F or N female
Documentation: Data Sheet | Drawing -
Programmable Attenuator 50-2000 MHz 0-127dB x 1dB | 75P-177
JFW Model #: 75P-177
Type: Solid-State Programmable Attenuator
Impedance: 75 Ohm
dB Total: 127 dB
dB Step: 1 dB
Frequency Range: 50-2000 MHz
Switching Speed: 2 uS
RF Input Power: +10 dBm
Control: TTL
RF Connectors: F
Documentation: Data Sheet | Drawing -
Programmable Attenuator 50-1000 MHz 0-127dB x 1dB | 75P-176
JFW Model #: 75P-176
Type: Solid-State Programmable Attenuator
Impedance: 75 Ohm
dB Total: 127 dB
dB Step: 1 dB
Frequency Range: 50-1000 MHz
Switching Speed: 2 uS
RF Input Power: +10 dBm
Control: TTL
RF Connectors: BNC, F, N
Documentation: Data Sheet | Drawing -
Programmable Attenuator 450-2150 MHz 0-127dB x 1dB | 75P-173
JFW Model #: 75P-173
Type: Solid-State Programmable Attenuator
Impedance: 75 Ohm
dB Total: 127 dB
dB Step: 1 dB
Frequency Range: 450-2150 MHz
Switching Speed: 2 uS
RF Input Power: +20 dBm
Control: TTL
RF Connectors: BNC, F, N
Documentation: Data Sheet | Drawing