Attenuator
0.1~18GHz, Attenuation range0~63dB, step0.25dB, 0.3W, SMA, /
- Contact Us
- Cynthia
- cynthia@com-mw.com
sales@com-mw.com
+86 19938031308- 23 floor, No. 1 building, P Jiuxi Plaza, No.37, Jiancai Road, Chenghua Zone, Chengdu
Main specifications
| Parameters | Min | Typical | Max | Units |
| Frequency | 0.1 | ~ | 18 | GHz |
| Attenuation range | 0 | ~ | 63 | dB |
| IL | 8 | 12 | dB | |
| VSWR | 1.8 | 2.2 | ||
| Attenuation accuracy root mean square | 2 | 2.5 | dB | |
| I/O Isolation | 60 | dB | ||
| Input power (RF input port) | +25 | dBm | ||
| Input power (RF output port) | +18 | dBm | ||
| Attenuation switching time | 100 | ns |
Other parameters
| step | 0.25dB |
| Power Capacity | 0.3W Design assurance |
| Impedance | 50Ω |
| Connector | SMA-K |
| Surface | Nickel plating |
| Working voltage | +5V |
| Working current | When using Ethernet, USB-C or RS232 to control the module, the working current is 300mA; When using TTL control, the remaining controls need to be powered off, and the working current is 50mA. |
| Operation Temp. | -0~+50℃ Design assurance |
| Storage Temp. | -30~+85℃ Design assurance |
| Control port | USB-C/TTL/RS232/ETHERNTE CONTROLUS |
| Other | / |
Truth table(1=3.3~5V,0=0V)
| Attenuation | A8 | A7 | A6 | A5 | A4 | A3 | A2 | A1 |
| 0.25 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| 0.5 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
| 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 |
| 2 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 |
| 4 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
| 8 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
| 16 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
| 31.5 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 31.75 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 63 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 |
RJ-45 & RS-232 Control
| 0 dB | AA 00 02 03 04 05 06 55 | |
| 0.25 dB | AA 01 02 03 04 05 06 55 | |
| 0.5 dB | AA 02 02 03 04 05 06 55 | |
| 1 dB | AA 04 02 03 04 05 06 55 | |
| 2 dB | AA 08 02 03 04 05 06 55 | |
| 4 dB | AA 10 02 03 04 05 06 55 | |
| 8 dB | AA 20 02 03 04 05 06 55 | |
| 16 dB | AA 40 02 03 04 05 06 55 | |
| 31.7 dB | AA 80 02 03 04 05 06 55 | |
| 63 dB | AA FF 02 03 04 05 06 55 |
15 pin definition
| Pin | Illustrate | Voltage |
| 1 | Supply voltage | +5V |
| 2 | GND | GND |
| 3 | RS232-TX | |
| 4 | RS232-RX | |
| 5 | TTL-EN | +3.3V/0V |
| 6 | TRIGGER | +3.3V/0V |
| 7 | ATT1-0.25 | +3.3V/0V |
| 8 | ATT1-0.5 | +3.3V/0V |
| 9 | ATT1-1 | +3.3V/0V |
| 10 | ATT1-2 | +3.3V/0V |
| 11 | ATT1-4 | +3.3V/0V |
| 12 | ATT1-8 | +3.3V/0V |
| 13 | ATT1-16 | +3.3V/0V |
| 14 | ATT2-31.5 | +3.3V/0V |
| 15 | Not connected |
Typical test data
| Frequency (G) | VSWR | IL (dB) | A-0.25 dB | A-0.5 dB | A-1 dB | A-2 dB | A-4 dB | A-8 dB | A-16 dB | A-63 dB |
| 0.1 | 2.17 | -5.67 | -0.41 | -0.76 | -1.04 | -2.13 | -4.17 | -8.2 | -15.4 | -59.4 |
| 2.8 | 1.9 | -7.61 | -0.35 | -0.59 | -0.97 | -1.99 | -3.8 | -7.78 | -15.05 | -59.34 |
| 4.2 | 1.79 | -8.31 | -0.3 | -0.51 | -0.97 | -2.01 | -3.81 | -7.87 | -15.2 | -59.74 |
| 8.5 | 1.29 | -9.08 | -0.27 | -0.45 | -0.9 | -1.97 | -3.77 | -7.87 | -15.45 | -60.27 |
| 10 | 1.96 | -8.86 | -0.35 | -0.6 | -1.04 | -2.18 | -4.07 | -8.03 | -15.54 | -61.76 |
| 12 | 1.08 | -8.95 | -0.38 | -0.63 | -1.02 | -2.23 | -4.23 | -8.22 | -16.25 | -62.41 |
| 14 | 1.48 | -10.07 | -0.31 | -0.49 | -1.06 | -2.37 | -4.4 | -8.44 | -16.25 | -61.93 |
| 15 | 1.48 | -10.38 | -0.37 | -0.6 | -1.07 | -2.34 | -4.15 | -7.88 | -15.69 | -60.91 |
| 17 | 1.44 | -10.46 | -0.48 | -0.48 | -0.95 | -2.2 | -4.09 | -8.04 | -16.12 | -61.85 |
| 18 | 1.87 | -11.15 | -0.41 | -0.41 | -0.95 | -2.25 | -4.08 | -7.99 | -16.04 | -62.42 |
Instructions for use
1、当TRIGGER=0时，网口，type-c，232无论发送什么命令，FPGA都不响应，当TRIGGER=1时，FPGA才会响应，且TRIGGER再次变为0是，FPGA的状态保持为此次状态，直到TRIGGER=1时，接收到下一状态；
2. When using TTL direct control, it is necessary to set TTL-EN=1 to turn off the power supply of Ethernet ports, 232, and type-c. When using Ethernet port, 232, and type-c control, TTL-EN=0 and all ATT pins on the 15 core connector need to be suspended;
3. Type-C control software available
Reference picture
Configuration(mm)
Typical test curve
Typical switching time - rising edge
Typical switching time - falling edge
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.
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