PE64909B-Z

Overview

The PE64909B-Z is a digitally tunable capacitor utilizing pSemi's UltraCMOS and DuNE technology. It operates within the 100 MHz to 3 GHz frequency range, offering a capacitance span of 0.6 pF to 2.35 pF. The device features a 3-wire SPI interface for digital control and supports a DC voltage rating of 2.75 VDC. Packaged in a compact 10-QFN (2x2 mm) SMD/SMT footprint with a height of 0.55 mm, it functions across an operating temperature range of -40°C to +85°C.

Feature Summary

• Integrates DuNE technology-enhanced digitally tunable capacitor architecture based on UltraCMOS process
• Provides precise digital capacitance tuning via standard 3-wire SPI interface
• Delivers high quality factor performance suitable for RF signal path applications

Applications

• RF and IF impedance matching networks
• Antenna tuning systems
• Phase shifters and beamforming arrays
• Variable gain amplifiers and attenuators

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and specific tape-and-reel packaging requirements prior to ordering. Ensure that the selected variant matches the required capacitance tolerance and interface specifications for the target design.

Selection Notes

Select this component when ultra-compact size and digital control are prioritized over analog variable capacitors. The 2x2 mm package facilitates dense PCB layouts. Consider the 0.6 pF to 2.35 pF tuning range and 2.75 VDC limit to ensure compatibility with system voltage and impedance requirements.

Part Context

This part belongs to the PE64909 family of UltraCMOS digitally tunable capacitors. It represents a modern alternative to traditional varactors or MEMS devices, offering non-volatile memory retention and robust reliability for mobile and wireless communication hardware.

Replacement Considerations

PE64909 is listed as an alias for this component. Verify pinout and electrical characteristics against other DTC families before substitution.