RF attenuator has digital control for serial and parallel programming
Peregrine Semiconductor’s 75Ohm, 6bit RF digital step attenuator (DSA), the PE4314, is now available from Link Microtek. It delivers glitch-less transitions between attenuation states in wired broadband applications in cable/satellite customer premises equipment and infrastructure equipment.
Covering a frequency range from 1MHz to 2.5GHz, the DSA achieves an attenuation transient of just 0.5dB, eliminating the need for software or firmware workarounds to mitigate the effect of a glitch and prevent damage to expensive subassemblies.
Attenuation range is 0 to 31.5dB in 0.5dB steps. An integrated digital control interface provides for both serial and parallel programming of the attenuation, including the capability to program an initial attenuation state at power up. The device supports 1.8V control voltage and features an extended operating temperature range from -40 to 105 degree C.
It is housed in a 20-lead, 4.0 x 4.0 x 0.85mm QFN package and is fabricated using Peregrine’s UltraCMOS process, a patented variation of silicon-on-insulator (SoI) technology on a sapphire substrate.
Samples and evaluation kits are available.