This circuit uses an IDTF2250 attenuator. It is a low-insertion loss, voltage-variable attenuator with a broad frequency range to fit into various applications. Its extremely low insertion loss characteristic makes it more viable for high speed and high frequency applications. As mentioned above, it is a voltage-variable attenuator meaning its attenuation level can be varied depending on the type of application. IDTF2250 offers superb performance over its entire voltage control and attenuation range.
Since it has low insertion loss and a wide range of frequency range, this design can be typically applied for portable wireless, base stations (2G, 3G, & 4G), repeaters, military systems, digital pre-distortion, public safety infrastructure, WIMAX receivers and transmitters, RFID handheld and portable readers, cable infrastructure, wireless LAN, test equipment, and other low insertion loss applications.
