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HMC472 Digital RF Attenuator Module DC-3.8GHz Parallel 0.5dB Step 31.5dB Attenuation Value

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$11.82

$ 5 .99 $5.99

In Stock



Product Description

Attenuator Module
RF Attenuator
Digital RF Attenuator Module
0.5dB Step Attenuator Module
HMC472 Module
1M-3.8G RF Attenuator Module

Feature:

  • 1. The HMC472 is a wideband 6-bit digital attenuator with an attenuation range of 0 to 31.5 dB and a typical step error of ± 0.25 dB.
  • 2. Adopt QFN surface mount package, uses single power supply 5V, working frequency range from DC to 3.8 GHz.
  • 3. Suitable for a variety of RF and IF applications.
  • 4. Insertion loss is less than 2.0 dB (typical) and IIP3 is +54 dBm.
  • 5. Made of high quality electronic components, stable and reliable.

Specification:

  • Condition: 100% Brand New
  • Item Type: RF Attenuator Module
  • Operating Frequency Range: 1 ~ 3.8GHz
  • Input Signal Maximum Power: 20dBm
  • Attenuation Factor and Step Size: Attenuation factor is 0~31.5dB, step size is 0.5dB
  • Insertion Loss: Less Than 2.0dB
  • Attenuation Control Interface: Manually adjust the control through the 6-position pin header on the board
  • Input and Output Impedance: 50Ω
  • Power Supply: Typical value +5V, maximum can not exceed +7V
  • Input and Output Interface: SMA interface inner screw hole

Package List:

  • 1 x Module

Philipp B.
Reviewed in Canada on December 27, 2024
Comes without any description. Also the PCB is not labled at all, not like shown on the photo where there are a few numbers to help.Once you search the internet for hours for helpful instructions you will figure out that this thing does pretty much nothing and is just a waste of time. The values are +-80% in tolerance. What a joke!Goes straight back. Total waste of time and money!
Dean B
Reviewed in the United States on October 31, 2023
FYI, This unit worked perfectly as is when I tested it at 100MHz. It follows the evaluation board parts list from the data sheet. To use this for HF I changed C5 and C6 to 1.0uF. Also C1 - C4 were changed to 0.01uF. I decided to also remove the header, put 0.01uF on each of the control lines V1 - V6, and attach a ribbon cable for external control. I also trimmed the top edge of the board about 1/8” to fit it into an RF tight enclosure (see picture) and removed the solder mask on the bottom of the board for good grounding to the enclosure. That last part isn’t absolutely necessary for use at HF but I chose to do so. Note that the control lines are active low. They work fine with 3.3V signals. The pins opposite V1 - V6 have 5V on them. Hope this info helps. K4SDR.