84904K Datasheet, PDF (1/8 Pages) Agilent(Hewlett-Packard) – Programmable Step Attenuators

Agilent 84904, 6, 7K/L
Programmable Step Attenuators
Data Sheet
Excellent repeatability
High accuracy
Excellent reliability, long life
Features and description
• DC to 26.5 GHz, DC to 40 GHz
frequency coverage
• Optional calibration data
• 0 to 11 dB, 70 dB, 90 dB
• 1 dB steps, 10 dB steps
• Excellent repeatability
• High accuracy
• Excellent reliability, long life
• Exceptionally low insertion loss
These attenuators offer repeatability
of better than 0.03 dB and excellent
life (greater than 5 million switching
cycles per section).
This family of programmable step
attenuators offers coaxial measure-
ments to 26.5 GHz (K models) or to
40 GHz (L models), in a compact,
rugged design. The first model in this
family is the Agilent Technologies
84906K/L, which offers outstanding
performance with an attenuation
range of 0 to 90 dB in 10 dB steps.
Other models include the Agilent
84904K/L, with 0 to 11 dB of attenua-
tion in 1 dB steps, and the Agilent
84907K/L, with 0 to 70 dB of attenua-
tion in 10 dB steps.
This latest design evolution sets new
standards for size and performance.
High attenuation accuracy and low
SWR are achieved through the use of
miniature thin-film attenuation cards
composed of high-stability tantalum
nitride film on a sapphire substrate.
Insertion loss performance is out-
4
3
Insertion
Loss ²
(dB)
1
(.8)
(.6)
84904/6K
(1.9)
(1.4)
84907K
84904/6L
(2.4)
(1.8)
84907L
0
10 20 30 40
Frequency (GHz)
Figure 1. Insertion loss
standing, with less than 2 dB of loss
at 26.5 GHz and only 2.4 dB at 40 GHz
(figure 1). The compact size of the
units, 35% smaller than the 8495/7
(26.5 GHz) family, allows for easy
integration into instruments and ATE
systems.
This family of step attenuators offers
three connector types. For operation
to 40 GHz, the 84904/6/7L models
offer either the 2.4 mm connector,
which is recommended for top per-
formance and for rugged and repeat-
able connections, or the 2.92 mm con-
nector, which is compatible with SMA
and 3.5 mm connectors but is more
delicate. For operation to 26.5 GHz,
the 84904/6/7K models offer the
3.5 mm connector. This connector is
compatible with SMA and 2.92 con-
nectors, but is more rugged. Each
model in the 84904/6/7K and L family
comes with two female connectors
(standard) or may be ordered with
one female and one male connector
for easy insertion into a microwave
chain or to combine the 1 dB step