Switch/Rotary Variable Attenuator

Step Variable Attenuator(DIP) RF Component Supplier


 
VAD Series(DC ~ 3GHz )
Patent Product


China Patent No.: CN 2008 1 0144258
USA Patent No.: US 8,476,544 B2
Japen Patent No.: 2011-524168
Taiwan Patent No. : I 393347  

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Features
● Step variable
● DIP package ultra-small size, able to be mounted
● Wide frequency range: DC ~ 3GHz
● Low VSWR
● Low ion loss
● High performance,competitive price
● Wide attenuation range
● Step attenuation values flexible and able
● Power handling: 125mW
● Impedance: 50Ω or 75Ω
● Operating temperature:-40℃ ~ +105℃
● Compared with digital attenuators,zero distortion,
     no extra IP3,lower noise,higher reliability.
● At least 360 times(60 circles,6 times as a circle) tuning operation
● Customized attenuation values available

◆DIP Variable Attenuator
（VAD） Reliability Test

◆Wave Soldering Profile



Model Description　 　 　　　　　　　　　　　　　 　

VAD
 **  
Attenuation Range
 ** 
Step value
 * 
Impedance
 ** 
Package
 * 
shaft
e.g.:VAD0102BDH
Attenuation Range:01 represent 0~1dB.
Step value:02 represent step value 0.2dB.
Impedance:“B”represents 75Ω impedance,“no code”represents 50Ω impedance.
Package:“DL”represents lateral DIP package,“D”represents vertical DIP package.
Shaft:“H”represents a handling shaft,“no code”represents without handling shaft.
Note：Rotating caps for VAD(with handling shaft type) series is available.

Vertical DIP
Type

VADXXXXD(50Ω)
VADXXXXBD(75Ω)
VADXXXXDH(50Ω)
VADXXXXBDH(75Ω)
-(50Ω)
-(75Ω)
For details referred to color and size, please contact our sales

Lateral DIP
Type

VADXXXXDL(50Ω)
VADXXXXBDL(75Ω)
VADXXXXDLH(50Ω)
VADXXXXBDLH(75Ω)
-(50Ω)
-(75Ω)
Step Type Spec.
●Frequency range:DC ~ 2.5GHz       ●Power rating:125mW       ●Impedance:50Ω or 75Ω       ●Dimensions(mm):10×11×6
Model
Attenuation Range(dB)
Step Value
(dB)
Impedance
(Ω)
Typ.VSWR:1
Insertion Loss at 0dB
DC ~ 2GHz(dB)
Attenuation Accuracy(dB)
DC ~ 2GHz
DC~2GHz
2GHz~2.5GHz
0 ~ 1
0.2
50
1.30
1.40
0.35
1.0
0 ~ 1.8
0.3
50
1.35
1.45
0.35
1.0
0 ~ 2
0.4
50
1.35
1.45
0.35
1.0
0 ~ 2.5
0.5
50
1.35
1.45
0.35
1.0
0 ~ 3
0.6
50
1.35
1.45
0.35
1.0
0 ~ 5
1.0
50
1.40
1.60
0.35
1.3
0 ~ 7.5
1.5
50
1.45
1.65
0.35
1.5
0 ~ 10
2.0
50
1.45
1.65
0.35
1.3
0 ~ 12.5
2.5
50
1.5(at 1.0GHz)
-
0.35
1.2(at 1.0GHz)
0 ~ 15
3.0
50
1.5(at 1.0GHz)
-
0.35
1.2(at 1.0GHz)
Application1A
0 ~ 15
1.0
50
1.5(at 1.0GHz)
-
0.35
1.2(at 1.0GHz)
Application2A
0 ~ 20
1.0
50
1.5(at 1.0GHz)
-
0.35
1.2(at 1.0GHz)
0 ~ 1
0.2
75
1.30
1.45
0.3
0.5
0 ~ 1.8
0.3
75
1.30
1.45
0.3
0.5
0 ~ 2
0.4
75
1.35
1.45
0.3
0.5
0 ~ 2.5
0.5
75
1.35
1.45
0.3
0.6
0 ~ 3
0.6
75
1.35
1.45
0.3
0.6
0 ~ 5
1.0
75
1.35
1.45
0.3
1.0
0 ~ 7.5
1.5
75
1.35
1.45
0.3
1.0
0 ~ 10
2.0
75
1.35
1.45
0.3
1.2
0 ~ 12.5
2.5
75
1.6(at 1.5GHz)
-
0.3
1.0(at 1.0GHz)
0 ~ 15
3.0
75
1.45(at 1.0GHz)
-
0.3
1.0(at 1.0GHz)
Application1B
0 ~ 15
1.0
75
1.45(at 1.0GHz)
-
0.3
1.0(at 1.0GHz)
Application2B
0 ~ 20
1.0
75
1.45(at 1.0GHz)
-
0.3
1.0(at 1.0GHz)
Option:VAD in DIP Package is available with a shaft.Part number with a suffix H represents VAD with a handling shaft.
For example,VAD1530BDH is 0-15dB,3dB/step,75ohm,DIP,with handling shaft.

Application Note:


Free Samples and Evaluation boards are available upon request


Example1:
You need 2 sets(pieces) of VAD,it can meet the attenuation range:0 to 18 dB by 1dB/step

VAD(A):0,1,2,3,4,5dB;
VAD(B):0,6,12,13,13,13dB;
You can get the attenuation value are:A+B=M dB
Application1:When A=0,1,2,3,4,or5dB,B=0dB,then M=A+B=0,1,2,3,4,or5dB;
Application2:When A=0,1,2,3,4,or5dB,B=6dB,then M=A+B=6,7,8,9,10,or11dB;
Application3:When A=0,1,2,3,4,or5dB,B=12dB,then M=A+B=12,13,14,15,16,or17dB;
Application4:When A=0,1,2,3,4,or5dB,B=13dB,then M=A+B=13,14,15,16,17,or18dB;

Example2:
You need 2 sets(pieces)of VAD,it can meet the attenuation range:0 to 20 dB by 1dB/step

VAD(A):0,1,2,3,4,5dB;
VAD(B):0,6,12,15,15,15dB;
You can get the attenuation value are:A+B=M dB
Application1:When A=0,1,2,3,4,or5dB,B=0dB,then M=A+B=0,1,2,3,4,or5dB;
Application2:When A=0,1,2,3,4,or5dB,B=6dB,then M=A+B=6,7,8,9,10,or11dB;
Application3:When A=0,1,2,3,4,or5dB,B=12dB,then M=A+B=12,13,14,15,16,or17dB;
Application4:When A=0,1,2,3,4,or5dB,B=15dB,then M=A+B=15,16,17,18,19,or20dB;
Outline Dimensions(unit:mm)
VAD DIP Package
VAD DIP with handing shaft
 
Applications
● In RF reader: adjustable signal power, so realizing transceiving. action distance adjustable.
● In preliminary stage of power amplifier: adjusting consistency of output power.
● Replaceable of digital attenuator, adjustable the system gain and output power with no extra IP3, no distortion or no noise.
● Repeater
● WiMAX
● WLAN
● CATV



Return to Miniature Variable Attenuator

Applications

Step Variable Attenuator(DIP) is widely used in RF communication links, radar sub-systems, GNSS modules, and industrial wireless control equipment.

Selection Guide

When selecting Step Variable Attenuator(DIP), verify frequency band, insertion loss, isolation or attenuation target, package type, and power handling against your design requirements.

FAQ

What is the typical use of Step Variable Attenuator(DIP)?

It is used to control, split, combine, or sample RF signals in communication and microwave circuits.

How do I choose the right model?

Start from your operating frequency and electrical target, then confirm footprint and environmental conditions.

Who is the supplier and what is the brand?

Supplier: Baiao Technology | Brand: Yantel