Digital attenuator
18~40GHz, Attenuation range0.5~31.5dB, step0.5dB, 0.2W, 2.92
- DDA8-18-40G-1177
- China
- One Year
- +86-19938031308
- sales@com-mw.com, cynthia@com-mw.com
- 3-1-2306, No.37 Jiancai Road, Chenghua Zone, Chengdu
- For qty details, please search in spot products of dianzibuy. Any changes to the contents are not notified. Please confirm again before ordering.
- No restrictions on export to any country
- RoHS compliant (Meet RoHS standards can be customized)
Product Details
Main specifications
| Parameters | Min | Typical | Max | Units |
| Frequency | 18 | ~ | 40 | GHz |
| Attenuation range | 0.5 | ~ | 31.5 | dB |
| IL | 8 | dB | ||
| VSWR | 1.8 | 2 | ||
| 0.5dB Accuracy | 0.3 | 0.5 | 0.8 | dB |
| 1dB Accuracy | 0.6 | 1 | 1.4 | dB |
| 2dB Accuracy | 1.5 | 2 | 2.5 | dB |
| 4dB Accuracy | 3 | 4 | 5 | dB |
| 8dB Accuracy | 6.5 | 8 | 9.5 | dB |
| 16dB Accuracy | 14.5 | 16 | 17.5 | dB |
Other parameters
| step | 0.5dB |
| Power Capacity | 0.2W |
| Impedance | 50Ω |
| Connector | 2.92-F detachable, Pin 0.3mm |
| Connector material | Stainless steel |
| Surface | Gold-plating |
| Working voltage | -5V |
| Working current | 50mA |
| Operation Temp. | -40~+85℃ Design assurance |
| Other | Pin spacing 1.27mm |
Truth table
| Attenuation | A1 | A2 | A3 | A4 | A5 | A6 |
| 0dB Through | 0 | 0 | 0 | 0 | 0 | 0 |
| 0.5dB | 0 | 0 | 0 | 0 | 0 | 1 |
| 1dB | 0 | 0 | 0 | 0 | 1 | 0 |
| 2dB | 0 | 0 | 0 | 1 | 0 | 0 |
| 4dB | 0 | 0 | 1 | 0 | 0 | 0 |
| 8dB | 0 | 1 | 0 | 0 | 0 | 0 |
| 16dB | 1 | 0 | 0 | 0 | 0 | 0 |
Typical test curve
Reference picture
Configuration(mm)
Typical test data
| Frequency(GHz) | A-0.5dB | A-1dB | A-2dB | A-4dB | A-8dB | A-16dB | A-31.5dB |
| 17 | -0.44 | -0.9 | -1.68 | -3.86 | -7.97 | -15.71 | -31.58 |
| 18.71 | -0.34 | -0.77 | -1.78 | -4.07 | -8.43 | -16.02 | -31.69 |
| 20.43 | -0.37 | -0.89 | -1.87 | -4.07 | -8.33 | -16.14 | -32.1 |
| 22.14 | -0.44 | -0.98 | -1.79 | -4.03 | -8.22 | -16.12 | -31.78 |
| 23.86 | -0.42 | -0.85 | -1.73 | -3.92 | -8.25 | -15.94 | -30.87 |
| 25.57 | -0.32 | -0.7 | -1.81 | -4.18 | -8.73 | -16.01 | -30.67 |
| 27.29 | -0.37 | -0.9 | -1.88 | -4.01 | -8.26 | -15.72 | -29.8 |
| 29 | -0.46 | -1 | -1.82 | -3.96 | -8.2 | -15.94 | -30.54 |
| 30.71 | -0.38 | -0.76 | -1.74 | -4.05 | -8.46 | -15.85 | -30.4 |
| 32.43 | -0.32 | -0.78 | -1.9 | -4.19 | -8.47 | -15.66 | -29.78 |
| 34.14 | -0.41 | -0.97 | -1.95 | -3.82 | -8.07 | -15.42 | -29.36 |
| 35.86 | -0.35 | -0.85 | -1.98 | -4.12 | -8.27 | -15.39 | -29.08 |
| 37.57 | -0.34 | -0.91 | -2.09 | -4.13 | -8.19 | -15.13 | -28.86 |
| 39.29 | -0.41 | -0.94 | -2.2 | -3.98 | -8.15 | -15.17 | -28.57 |
| 41 | -0.29 | -0.89 | -2.4 | -4.16 | -8.01 | -14.88 | -28.15 |
Note
1. Clean the surface of the product, do not soak the product in a cleaning solution; 2. This product belongs to electrostatic sensitive devices. Pay attention to anti-static measures during installation or storage; 3. If the overall temperature is greater than 125 ℃, please consult with us before placing an order.