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Programmable Step Attenuators


RLC Electronics' PA Series Attenuators are binary Programmable Step attenuators designed to operate from DC to 18 GHz. Two basic models offer attenuation ranges of 15, and 70 dB. Control is in standard format: 1-2-4-8, etc. The attenuators are available with failsafe or latching operation, 12 or 28 volt coils, optional TTL drivers, and a choice of frequency ranges.


Specifications

PA-1-2-3-4-5

Model

No. 

Frequency

Range (GHz) 

Attenuation


Attenuation

Cells 

VSWR

(Max) 

Insertion

Loss

(dB Max) 

Accuracy

(dB Max) 

Range (dB)

Steps (dB)

PA-124

DC-5

0-15

1

1,2,4,8

1.5 

0.6 

+/-.5 

per cell  

5-12.4

1.7 

1.0 

12.4-18(optional)

1.9 

1.3 

PA-125

DC-5 

0-70

10     

10, 20, 40

1.5 

0.5 

 +/-1.0  per cell  

5-12.4 

1.7 

0.8 

12.4-18 (optional)

1.8 

1.0 


Power Rating: 1 watt average at 25 deg C

Impedance: 50 ohms

Life: 1,000,000 operations

Connectors: SMA Female

Switching Speed: 15 milliseconds max.


Control Power: 

12 Vdc at 185 mA nominal per cell

28 Vdc at 108 mA nominal per cell

Pulse Latching: Optional


To designate the attenuator desired use:

1: "124", "125" for model number

2: "H" for 12 VDC or "D" for 28 VDC

3: "L" for pulse latching

4: "TL" for TTL Driver


5:   "5" for DC-5 GHz, "12" for DC-12.4 GHz, 

"18" for DC-18 GHz, "48" for 4-8 GHz, 

"812" for 8-12.4 GHz, "1218" for 12.4-18 GHz option

Example: PA-125-D-TL-1218 is a 0-70 dB, 12-18 GHz programmable step attenuator with

 10 dB steps, 28 volt coil, and TTL drivers.


Outline Drawing

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