RFMD’s new RFSA2514/2524 5-bit digital step attenuators (DSAs) feature high linearity over their entire gain control range with excellent step accuracy in 0.5dB (RFSA2514) or 1dB (RFSA2524) 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.


• Frequency Range 50MHz to 4000MHz 

• Attenuation Range and Step 

       o RFSA2514: 15.5dB, 0.5dB

       o RFSA2524: 31dB, 1dB

• Step Accuracy: +/-(0.1dB + 5% attenuation range)

• Insertion Loss: 1.2dB @ 2GHz 

• High Linearity: IIP3 >48dBm 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


Posted by Sara Cohen, Editorial Intern

July 17, 2012