industry news
Subscribe Now

RFSA2644/2654 6-Bit Serial-Controlled Digital Step Attenuators

RFMD’s new RFSA2644/2654 6-bit digital step attenuators (DSAs) feature high linearity over their entire 31.5dB gain control range with excellent step accuracy in 0.5dB steps. They are programmed via a serial mode control interface that is both 3V and 5V compatible. They also offer a rugged Class 1C HBM ESD rating via on-chip ESD circuitry. The MCM package is footprint-compatible with most 24-pin, 4mm x 4mm, QFN packages.

Features

  • Frequency Range
    • RFSA2644: 50MHz to 4000MHz
    • RFSA2654: 5MHz to 2000MHz
  • Attenuation Range and Step: 31.5dB , 0.5dB
  • Step Accuracy: +/-(0.1dB + 5% attenuation range)
  • IIP3 >50dBm For All Steps
  • 3V and 5V Logic-Compatible
  • Serial Programming Interface
  • Power-Up Programming Modes

Applications

  • Transceiver RF and IF Applications
  • 2G, 3G, LTE, WiMax/WiFi
  • Wireless Data, Satellite Terminals
  • Test Equipment
  • CATV/Satellite Set Top Boxes
  • Cable Modems
  • CATV Infrastructure
  • Data Network Equipment

Both the RFSA2644 and RFSA2654 are currently available in production quantities. Pricing begins at $1.76 each for 750 pieces.

For more information on RFSA2644, visit 
https://estore.rfmd.com/RFMD_OnlineStore/Products/RFMD%20Parts/PID-P_RFSA2644.aspx

For more information on RFSA2654, visit 
https://estore.rfmd.com/RFMD_Onlinestore/Products/RFMD+Parts/PID-P_RFSA2654.aspx

Leave a Reply

featured blogs
Mar 19, 2026
Our AI-powered replacements aren't just coming for our jobs'”they've already updated our résumés....

featured video

Cadence Chiplets Solutions | Helping you realize your chiplet ambitions

Sponsored by Cadence Design Systems

In this webinar, David Glasco, VP of Compute Solutions at Cadence, discusses how Cadence enables customers to transition from traditional monolithic SoC architectures to modular, scalable chiplet-based solutions, essential for meeting the growing demands of physical AI applications and high-performance computing.

Read eBook: Helping You Realize Your Chiplet Ambitions

featured chalk talk

BMV080: World’s Smallest Particulate Matter (PM) Sensor
In this episode of Chalk Talk, Liaisan Khismatova from Bosch Sensortec and I explore the benefits of the Bosch BMV080, the world’s smallest particulate matter (PM) sensor. They also investigate the fanless innovation at the heart of the BMV080 Particulate Matter Sensor and how the silent and maintenance-free operation and ultra-compact size of this sensor makes it a game changer for next generation air quality monitoring applications. 
Jan 29, 2026
38,178 views