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PSPL5510 18 GHz Attenuator

PSPL5510 Datasheet

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PSPL5510 Datasheet

The PSPL5510 Attenuators address a need that has been totally ignored by other microwave component manufacturers who specify their products in the frequency domain, but ignore the time domain responses. For time domain measurements, it is important to also know the transient response of attenuators used in a test set-up. These SMA attenuators have 8 ps risetimes and are recommended for measuring pulses with risetimes of 25 ps or slower. For frequency domain measurements, the useful frequency range is DC to 18 GHz. The 6 dB, 12 dB, 14 dB, and 20 dB values are popular for use as oscilloscope attenuators because they give simple, integer, voltage ratios of 2x, 4x, 5x, and 10x, respectively.

Key performance specifications
  • SMA DC to 18 GHz
  • 8 ps Risetime

Typical performance




Parameter 1 Value
Values available 1,2, 3, 6, 10, 12, 14, and 20 dB
Frequency range DC to 18 GHz
Connectors SMA jack (f) & plug (m)
Rise time (10% to 90%) 8 ps typical, when tested with 20 ps rise time pulse
Impedance - DC 50 Ω,
Delay 74 ps, 1 – 12 dB (see Typical performance delay plots)
83 ps, 14 & 20 dB (see Typical performance delay plots)
DC Attenuation accuracy ±0.3 dB, (1 – 6 dB)
±0.5 dB, (10 – 20 dB), maximum limits
Return loss –DC
> 40 dB typ, 23 dB minimum
Attenuation Flatness
(see Typical performance plots)
Return Loss – AC
(see Typical performance plots)
> 23 dB, f > 15 dB, f
Maximum Power Input 2 W avg at 25 °C, derated linearly to 0.5 W at 125C, 250 W peak,
Temperature Range -65 to +125 °C operating and storage, 0.0001 dB/dB/°C temp. coeff.
Length & Weight 19.2 mm, 4.1 gm (1-12 dB) 22.5 mm, 4.9 gm (14 & 20 dB), 5/16" hex body
Material stainless steel
Serial Number no
Warranty One Year

1 All parameters listed are typical unless maximum or minimum guaranteed limits are provided.

Ordering information

18 GHz Attenuator
Opt. 1DB
1 dB attenuation
Opt. 2DB
2 dB attenuation
Opt. 3DB
3 dB attenuation
Opt. 6DB
6 dB attenuation
Opt. 10DB
10 dB attenuation
Opt. 12DB
12 dB attenuation
Opt. 14DB
14 dB attenuation
Opt. 20DB
20 dB attenuation