PE4314B-Z

Overview

The PE4314B-Z is a 75Ω HaRP™ technology-enhanced, 6-bit RF digital step attenuator (DSA) supporting a frequency range from 1 MHz to 2.5 GHz. It features a total attenuation of 31.5 dB with a 0.5 dB digital step size and an insertion loss of 1.5 dB. The device operates on a 1.8V control voltage and offers glitch-free state transitions. It is housed in a 20-VFQFN package (4x4x0.85mm) and supports parallel or serial programming interfaces. The component ensures reliable performance across an extended operating temperature range from -40°C to +105°C.

Feature Summary

• Glitch-free attenuation state transitions for signal integrity
• Flexible parallel or serial programming interface options
• Extended industrial temperature operation up to +105°C

Applications

• Cable television infrastructure including DOCSIS 3.1/4.0 systems
• Satellite communication equipment
• Fiber optic network customer premises equipment (CPE)

Procurement Notes

Verify the specific suffix 'Z' indicates RoHS compliance when sourcing. Confirm the package type matches the 20-VFQFN specification required for your PCB layout. Ensure the design supports the 1.8V control voltage logic levels. Check that the application environment stays within the specified -40°C to +105°C operational temperature limits for optimal performance.

Selection Notes

Select this component for applications requiring precise 75Ω impedance matching in broadband RF environments. It is suitable where low insertion loss and high linearity are critical. Consider the 6-bit resolution for fine attenuation control needs. Evaluate the QFN package for space-constrained designs requiring robust thermal performance.

Part Context

This part belongs to the UltraCMOS® series by pSemi, utilizing advanced Silicon-On-Insulator (SOI) technology. The PE4314B-Z is specifically engineered for 75Ω cable TV and broadband networks. It complements other DSA models like the PE4312 and PE4314A-Z, offering distinct impedance and feature sets for varied system requirements.

Replacement Considerations

The PE4314A-Z is a documented industry-standard alternative within the same family. Verify if the A-series variant meets the specific 75Ω requirement and pinout compatibility before substitution. Cross-reference datasheets for any differences in control logic or thermal specifications.