75-Ohm glitch-less digital step attenuator
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By
Jean-Pierre Joosting
The PE4314 offers 6-bit resolution with 0.5 dB steps providing 31.5 dB attenuation range. Its low distortion characteristics and 75 ohm circuit optimization make it ideal for CATV and multi-carrier applications. Further, this DSA features Peregrine’s Glitch-less technology reducing attenuation state transitions to <0.5 dB thereby reducing software overhead and cost.
Supporting parallel and serial programming interfaces, the PE4314 allows flexible programming within AGC loops and operating from a 3.3 V supply requiring only 130 μA of current. So, this DSA helps reduce power consumption compared to similar competitive parts. The 20-lead, 4- x 4-mm QFN package is pin-compatible with existing Peregrine DSAs.
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