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| product name： Ultra-mini Variable Attenuator | |
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VAD Series(DC ~ 6GHz)
Patent pending |
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Features
● SMD package, ultra-small size, able to be mounted or soldered on the PCB.
● Wide frequency range: DC ~ 3GHz,DC ~ 6GHz
● Low reflection coefficient
● Low insertion loss, high attenuation accuracy.
● Replaceable of digital attenuator, easier to fix and adjust, higher reliability.
● Mechanical life per rotor: >3000 operations.
● No extra IP3, no noise, zero distortion.
● High performance, competitive price.
● Customized attenuation values available.
● Wide attenuation range.
● Power handling: 200mW
● Impedance: 50Ω，75Ω
● Operating temperature:-40℃ ~ +85℃
● Step attenuation values flexible and selectable. |
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| Applications |
Part No. Description |
● 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 |
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VAD ** ** ** * *
Frequency Attenuation Range Step value Fixing mode Stage -B(Optional) |
| e.g.: VAD031503A1 |
| Frequency: 03 represent DC ~ 3GHz |
| Attenuation Range: 15 represent 0 ~ 15dB |
| Step value: 03 represent step value 3dB |
Fixing mode：
A: represent solder fixing B: represent screw fixing |
Stage：
1: represent single stage 2: represent dual stage |
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| Note:(-B) represents 75Ω impedance, (no code) represents 50Ω impedance. |
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| Specifications |
| ● Frequency range: DC ~ 3GHz ● Power rating: 300mW ● Impedance: 50Ω or 75Ω ● Operating temperature: -40℃ ~ +85℃ |
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Model
Number |
Attenuation Range
(dB) |
Step Value
(dB) |
Attenuation Accuracy
（dB） DC~3GHz |
Max.
VSWR:1
DC~2GHz 2~3GHz |
0dB
Insertion Loss DC ~ 3GHz |
Dimensions
（mm） |
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1 ~ 6 |
1 |
±1.0 |
1.30 |
1.40 |
- |
A1/B1 |
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0 ~ 5 |
1 |
±1.0 |
1.30 |
1.40 |
0.4dB |
A1/B1 |
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0 ~ 10 |
2 |
±1.0 |
1.30 |
1.40 |
0.4dB |
A1/B1 |
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0 ~ 15 |
3 |
±1.0 |
1.30 |
1.40 |
0.4dB |
A1/B1 |
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0 ~ 20 |
4 |
±1.5 |
1.30 |
1.40 |
0.4dB |
A1/B1 |
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0 ~ 10 |
1 |
±1.5 |
1.25 |
1.50 |
0.4dB |
A2/B2 |
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0 ~ 15 |
1 |
±1.5 |
1.25 |
1.50 |
0.4dB |
A2/B2 |
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0 ~ 25 |
1 |
±1.5 |
1.25 |
1.50 |
0.4dB |
A2/B2 |
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0 ~ 20 |
2 |
±1.5 |
1.25 |
1.50 |
0.4dB |
A2/B2 |
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0 ~ 30 |
2 |
±1.5 |
1.25 |
1.50 |
0.4dB |
A2/B2 |
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0 ~ 36 |
3 |
±1.5 |
1.25 |
1.50 |
0.4dB |
A2/B2 |
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0 ~ 40 |
4 |
±1.5 |
1.25 |
1.50 |
0.4dB |
A2/B2 |
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| Outline Dimensions (mm) |
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| Recommended PCB Layout (mm) |
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