PE4314B-Z

The PE4314B-Z is a 6-bit RF digital step attenuator from pSemi, designed for broadband applications. It features a 75 Ohm impedance and supports a frequency range from 1 MHz to 2.5 GHz. The attenuator provides a maximum attenuation of 31.5 dB in precise 0.5 dB steps, ensuring monotonic performance across its operating frequency.

This device utilizes pSemi's UltraCMOS technology and HaRP enhancements for high linearity and excellent harmonic performance. It supports a 1.8V control voltage and an extended operating temperature range up to +105 °C. The PE4314B-Z offers both parallel and serial programming interfaces for flexible control, including the capability to set an initial attenuation state at power-up. It is pin-compatible with earlier models like the PE4304, PE4307, PE4308, and PE43404.

The attenuator is housed in a 20-lead, 4x4x0.85 mm QFN package, suitable for surface mounting. No external blocking capacitors are required if 0 VDC is present on the RF ports. Its design makes it ideal for applications such as DOCSIS 3.1/0 customer premises equipment (CPE) and infrastructure, satellite CPE, and fiber CPE.