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Attenuator Type:

Digital Attenuator?

Frequency Range:

Allow up to: overrange/margin
Use the overrange/margin to restrict your search to items whose full-scale range is close to your requirements.
(Overrange/margin requires both 'From' and 'To' values to work.)

Attenuation:

dB
Allow up to: overrange/margin
Use the overrange/margin to restrict your search to items whose full-scale range is close to your requirements.
(Overrange/margin requires both 'From' and 'To' values to work.)

Number of Bits (for Digital Attenuators):

Insertion Loss:

dB

Input VSWR:

:1

Package Type:

RF Connector:

Help with RF Attenuators specifications:

Attenuator Type
   Attenuator Type       
   Your choices are...         
   Fixed       A fixed attenuator is a device used to reduce power levels of a signal by a fixed amount (generally expressed in dB) with little or no distortion and reflections.  The output signal power is reduced relative to the input signal power by a fixed amount over a specified bandwidth while the input and output impedances are maintained close to the nominal level (50 or 75 ohms). 
   Variable       A variable attenuator is an attenuator whose attenuation can be varied between two values in a specified range.  Depending on how the changes are accomplished there are several types:
  • Continuously variable: The attenuation can be varied in a continuous fashion.
  • Step Attenuators: The attenuation can be varied only by a fixed amount (dB) at a time.
  • Programmable: The attenuation can be programmed in some way.
  • Direct Reading: The attenuation is set by mean of an external device, such as a rotary dial.
  • And others.
The attenuator control variable can be current or voltage, in all cases. 
   Other       Other, not listed, attenuator types. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Digital Attenuator?       A digital attenuator is an attenuator whose attenuation can be varied by digital control signals. Because digital signals are discrete in nature, a digitally controlled attenuator has number of finite attenuation states. If n is the number of bits of the digital control signal, then the number of attenuation states is 2n
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
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Performance Specifications
   Frequency Range       The frequency range for which the attenuator will meet all guaranteed specifications. 
   Search Logic:      User may specify either, both, or neither of the limits in a "From - To" range; when both are specified, matching products will cover entire range. Products returned as matches will meet all specified criteria.
   Attenuation       The maximum attenuation, expressed in dB, that the attenuator can provide. 
   Search Logic:      User may specify either, both, or neither of the limits in a "From - To" range; when both are specified, matching products will cover entire range. Products returned as matches will meet all specified criteria.
   Number of Bits (for Digital Attenuators)       The number of bits of the digital control signal used to change the attenuation setting of a digital attenuator. If n is the number of bits of the digital control signal, then the number of attenuation states is 2n
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
   Insertion Loss       Insertion loss (in dB) is the total RF power transmission loss resulting from the insertion of a device in a transmission line. It is defined as the ratio of signal power at the output of the inserted device to the input signal power at the input of the inserted device.  
   Search Logic:      All matching products will have a value less than or equal to the specified value.
   Input VSWR       VSWR (Voltage Standing Wave Ratio) is a unitless ratio ranging from 1 to infinity, expressing the amount of reflected energy at the input of the device.  A value of one indicates that all the energy will pass through, while any other value indicates that a portion of the energy will be reflected. 
   Search Logic:      All matching products will have a value less than or equal to the specified value.
   Tables:         
   VSWR vs. Return Loss     

VSWR

Return Loss (dB)

Reflected Power (%)

VSWR

Return Loss (dB)

Reflected Power (%)

1.00

infinity

0.000

1.38

15.94

2.55

1.01

46.06

0.005

1.39

15.75

2.67

1.02

40.09

0.010

1.40

15.56

2.78

1.03

36.61

0.022

1.41

15.38

2.90

1.04

34.15

0.040

1.42

15.21

3.03

1.05

32.26

0.060

1.43

15.04

3.14

1.06

30.71

0.082

1.44

14.88

3.28

1.07

29.42

0.116

1.45

14.72

3.38

1.08

28.30

0.144

1.46

14.56

3.50

1.09

27.32

0.184

1.47

14.41

3.62

1.10

26.44

0.228

1.48

14.26

3.74

1.11

25.66

0.276

1.49

14.12

3.87

1.12

24.94

0.324

1.50

13.98

4.00

1.13

24.29

0.375

1.55

13.32

4.8

1.14

23.69

0.426

1.60

12.74

5.5

1.15

23.13

0.488

1.65

12.21

6.2

1.16

22.61

0.550

1.70

11.73

6.8

1.17

22.12

0.615

1.75

11.29

7.4

1.18

21.66

0.682

1.80

10.88

8.2

1.19

21.23

0.750

1.85

10.51

8.9

1.20

20.83

0.816

1.90

10.16

9.6

1.21

20.44

0.90

1.95

 9.84

10.2

1.22

20.08

0.98

2.00

 9.54

11.0

1.23

19.73

1.08

2.10

 9.00

12.4

1.24

19.40

1.15

2.20

 8.52

13.8

1.25

19.08

1.23

2.30

 8.09

15.3

1.26

18.78

1.34

2.40

 7.71

16.6

1.27

18.49

1.43

2.50

 7.36

18.0

1.28

18.22

1.52

2.60

 7.04

19.5

1.29

17.95

1.62

2.70

 6.76

20.8

1.30

17.69

1.71

2.80

 6.49

22.3

1.31

17.45

1.81

2.90

 6.25

23.7

1.32

17.21

1.91

3.00

 6.02

24.9

1.33

16.98

2.02

3.50

 5.11

31.0

1.34

16.75

2.13

4.00

 4.44

36.0

1.35

16.54

2.23

4.50

 3.93

40.6

1.36

16.33

2.33

5.00

 3.52

44.4

1.37

16.13

2.44

6.00

 2.92

50.8

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Other Specifications
   Package Type:       
   Your choices are...         
   Surface Mount Technology (SMT)       Surface mount technology (SMT) adds components to a printed circuit board (PCB) by soldering component leads or terminals to the top surface of the board. SMT components have a flat surface that is soldered to a flat pad on the face of the PCB. Typically, the PCB pad is coated with a paste-like formulation of solder and flux. With careful placement, SMT components on solder paste remain in position until elevated temperatures, usually from an infrared oven, melt the paste and solder the component leads to the PCB pads.   Industry-standard pick-and-place equipment can mount SMT components quickly, accurately, and cost-effectively. SMT is a widely used alternative to mounting processes that insert pins or terminals through holes and solder leads into place on the opposite side of the board.  
   Flat Pack (FPAK)       Flat pack (FPAK) devices have gull wing or flat leads on two or four sides. They provide exceptional thermal and electrical performance and are available in cavity-up and cavity-down configurations. Flat pack devices are typically ceramic, hermetic, and surface-mounted. They are available in a variety of body sizes and pin counts. 
   Through Hole Technology (THT)       In Through Hole Technology (THT), components are mounted on printed circuit boards by inserting component leads through holes in the board and then soldering. 
   Connectorized       Connectorized devices attach with coaxial or other types of connectors. 
   Waveguide Assembly       Waveguide assemblies are used in microwave waveguide systems. They consist of a hollow metallic conductor with a rectangular, elliptical, or circular cross-section. Some conductors contain solid or gaseous dielectric materials. 
   Other       Other unlisted packages. 
   Search Logic:      Products with the selected attribute will be returned as matches. Leaving or selecting "No Preference" will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   RF Connector:       
   Your choices are...         
   BNC       Bayonet Neil-Concelman (BNC) connectors were designed for military applications, but are used widely in video and RF applications to 2 GHz. BNC connectors have a slotted outer conductor and a plastic dielectric that causes increasing losses at higher frequencies. BNC connectors are usable above 4 GHz as long as the slots radiate signals; however, these devices may not be mechanically stable to 10 GHz. Both 50Ω  and 75Ω BNC connectors are available. BNC connectors are also known as bayonet navy connectors or baby Neil connectors. 
   MCX       Miniature coaxial (MCX) connectors provide broadband capability through 6 GHz and are used in applications where weight and physical space are limited. They provide good electrical performance and are used to address the rapid implementation of the U.S. digital cellular PCN infrastructure. MCX connectors are also used in global positioning systems (GPS) and wireless LAN  (WLAN) applications. 
   Mini-UHF       Mini-UHF connectors are a miniature version of the original UHF connector. They feature a threaded coupling mechanism for reliable mating. Mini-UHF connectors are designed for use in cellular mobile telephone systems where size, weight and cost are critical. With crimp cable termination for low installation costs, these connectors provide excellent RF performance in applications through 2.5 GHz. 
   MMCX       Micro-miniature coaxial (MMCX) connectors are smaller than MCX connectors and feature a more robust interface for greater durability. They are ideal for high volume, wireless SMT or PCMCIA applications in cellular base stations, cellular phones and personal communicators. MMCX connectors are also used in global positioning systems and wireless LAN (WLAN) applications. 
   SMA       Subminiature-A (SMA) connectors are intended for use on semi-rigid cables in components. They directly interface the cable dielectric without air gaps.  They are not intended for permanent connections. 
   SMB       Subminiature-N (SMB) connectors are snap-mount connectors that are available either in 50Ω or 75Ω impedances.  They are used for frequencies from DC to 4GHz. 
   SMP       Subminiature P (SMP) connectors are rated to 40 GHz and, depending on detent type, can withstand from 100 to 1,000 interconnect cycles. 
   TNC       Threaded Neil-Concelman (TNC) connectors are similar in size to BNC connectors but feature a threaded coupling nut for applications that require performance to 11 GHz. TNC connectors are durable, reliable devices that are widely used in the cellular and mobile communication industry for equipment cabling and antenna interfaces. 
   Type F       Type F connectors have a screw-type coupling and frequency range up to 1.5 GHz. Applications include CATV, TV, and antennas. 
   Type N       Type N connectors include an integrated gasket to protect against environmental ingress and create an air gap between the center and the outer conductor. They primarily have 50Ω impedance, but 75Ω versions for CATV, are available. 
   UHF       Ultra high frequency (UHF) connectors are economical, all-purpose connectors designed with non-constant impedance for use in comparatively low voltage and low frequency applications such as citizens' band (CB) communications systems. UHF connectors are also used in public address systems, closed circuit television (CCTV), civil defense, landing systems, ground control apparatus, ship-to-shore communications, and mobile radio equipment hookups between antenna and transmitters or receivers. 
   1.6 / 5.6       1.6 / 5.6 connectors are mechanically sturdy devices that feature a coupling mechanism. They are often used with equipment that requires resistance against environmental and mechanical stress. 1.6 / 5.6 connectors are also suitable for handling RF analog and digital signals in telecommunications systems. 
   7/16       7-16 connectors are designed for use in medium to high power communication systems. These connectors perform exceptionally well in multichannel cellular systems where power levels approximate 100 watts per channel. Designed for both flexible as well as corrugated cables, these connectors are used in a variety of cellular base station and broadcast communication applications. 
   Other       Other unlisted RF connectors. 
   Search Logic:      Products with the selected attribute will be returned as matches. Leaving or selecting "No Preference" will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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