● 步進式
● 采用SMD封裝,體積超小,可直接安裝或焊接在PCB上。
● 頻率范圍寬:DC ~ 3GHz
● 反射系數(shù)小
● 低插入損耗
● 高性能,低價格
● 衰減量變化范圍大
● 輸入功率:125mW
● 阻抗:50Ω,75Ω
● 工作溫度:-40℃ ~ +105℃
● 至少可以旋轉(zhuǎn)360次(即60圈,旋轉(zhuǎn)6檔為一圈)
● 多種步進量可選
VAD | ** 衰減范圍 | ** 步進值 | * 阻抗 | ** 封裝 | * 軸(手柄) |
SMD Type | VADXXXX(50Ω) | VADXXXXB(75Ω) | VADXXXXH(50Ω) | VADXXXXBH(75Ω) |
Vertical DIP Type | VADXXXXD(50Ω) | VADXXXXBD(75Ω) | VADXXXXDH(50Ω) | VADXXXXBDH(75Ω) |
Lateral DIP Type | VADXXXXDL(50Ω) | VADXXXXBDL(75Ω) | VADXXXXDLH(50Ω) | VADXXXXBDLH(75Ω) |
Part No. | 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 | ||||||
VAD0102*** | 0 ~ 1 | 0.2 | 50 | 1.30 | 1.40 | 0.35 | 1.0 |
VAD0203*** | 0 ~ 1.8 | 0.3 | 50 | 1.35 | 1.45 | 0.35 | 1.0 |
VAD0204*** | 0 ~ 2 | 0.4 | 50 | 1.35 | 1.45 | 0.35 | 1.0 |
VAD0305*** | 0 ~ 2.5 | 0.5 | 50 | 1.35 | 1.45 | 0.35 | 1.0 |
VAD0306*** | 0 ~ 3 | 0.6 | 50 | 1.35 | 1.45 | 0.35 | 1.0 |
VAD0510*** | 0 ~ 5 | 1.0 | 50 | 1.40 | 1.60 | 0.35 | 1.3 |
VAD0815*** | 0 ~ 7.5 | 1.5 | 50 | 1.45 | 1.65 | 0.35 | 1.5 |
VAD1020*** | 0 ~ 10 | 2.0 | 50 | 1.45 | 1.65 | 0.35 | 1.3 |
VAD1020X*** | 0 ~ 10 | 2.0 | 50 | - | 1.5 | 0.35(at 2.4GHz) | 0.5(at 2.4GHz) |
VAD1325*** | 0 ~ 12.5 | 2.5 | 50 | 1.5(at 1.0GHz) | - | 0.35 | 1.2(at 1.0GHz) |
VAD1530*** | 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) |
VAD0102B*** | 0 ~ 1 | 0.2 | 75 | 1.30 | 1.45 | 0.3 | 0.5 |
VAD0203B*** | 0 ~ 1.8 | 0.3 | 75 | 1.30 | 1.45 | 0.3 | 0.5 |
VAD0204B*** | 0 ~ 2 | 0.4 | 75 | 1.35 | 1.45 | 0.3 | 0.5 |
VAD0305B*** | 0 ~ 2.5 | 0.5 | 75 | 1.35 | 1.45 | 0.3 | 0.6 |
VAD0306B*** | 0 ~ 3 | 0.6 | 75 | 1.35 | 1.45 | 0.3 | 0.6 |
VAD0510B*** | 0 ~ 5 | 1.0 | 75 | 1.35 | 1.45 | 0.3 | 1.0 |
VAD0815B*** | 0 ~ 7.5 | 1.5 | 75 | 1.35 | 1.45 | 0.3 | 1.0 |
VAD1020B*** | 0 ~ 10 | 2.0 | 75 | 1.35 | 1.45 | 0.3 | 1.2 |
VAD1325B*** | 0 ~ 12.5 | 2.5 | 75 | 1.6(at 1.5GHz) | - | 0.3 | 1.0(at 1.0GHz) |
VAD1530B*** | 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) |
例如,VAD1530BDH表示0~15dB,3dB每步進,75歐姆,直插式帶手柄。
用兩個VAD串聯(lián),可實現(xiàn)衰減范圍0~17dB,步進量1dB。
VAD(B):0,6,12,12,12,12dB;
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;
用兩個VAD串聯(lián),可實現(xiàn)衰減范圍0~20dB,步進量1dB。
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;
外形尺寸 (mm)
從而可調(diào)節(jié)接收和發(fā)射的作用距離。
● 用于射頻功率放大器的前級,可調(diào)節(jié)功率放大器
輸出功率的一致性。
● 可取代數(shù)控衰減器,用于系統(tǒng)增益和輸出功率的
調(diào)節(jié)。不產(chǎn)生新的三階交調(diào)、失真和噪音。
● 可用于直放站
● WiMAX
● 無線局域網(wǎng)
● 廣播電視