Digital step attenuator covers 1 MHz to 2.5 GHz
The PE4314 is a 75Ω HaRP™ technology-enhanced, 6-bit RF DSA that operates from 1 MHz to 2.5 GHz and features glitch-less attenuation state transitions and low distortion. It supports 1.8-V control voltage and an extended operating temperature range up to +105°C, making it versatile for a range of wired broadband applications, including DOCSIS 3.1/0, satellite and fiber customer premises equipment (CPE) and infrastructure.
The DSA is a pin-compatible upgraded version of the PE4304, PE4307, PE4308 and PE43404 from Peregrine. An integrated digital control interface supports serial and parallel programming of the attenuation, including the capability to program an initial attenuation state at power-up. The PE4314 covers a 31.5 dB attenuation range in 0.5 dB steps. It is capable of maintaining 0.5 dB monotonicity through 2.5 GHz. No external blocking capacitors are required if 0 VDC is present on the RF ports.
The PE4314 is manufactured on Peregrine’s UltraCMOS process, a patented variation of silicon-on-insulator (SOI) technology on a sapphire substrate. It is offered in a 20-lead, 4- x 4- x 0.85-mm QFN package.
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