PE64906B-Z

Overview

The PE64906B-Z is a digitally tunable capacitor (DTC) from pSemi, utilizing UltraCMOS and DuNE technology. It operates within a frequency range of 100 MHz to 3 GHz. The device provides a capacitance range of 0.9 pF to 4.6 pF with a minimum Q factor of 40. It features an SPI-compatible serial interface and supports a DC voltage rating of 2.75 VDC. The component is housed in a 10-QFN package measuring 2 mm x 2 mm with a height of 0.55 mm. It functions reliably between -40°C and +85°C.

Feature Summary

• Utilizes DuNE-enhanced UltraCMOS technology for high-performance digital tuning
• Integrates a 3-wire SPI compatible serial interface with built-in bias generation
• Includes integrated ESD protection mechanisms
• Supports wideband operation across 100 MHz to 3 GHz frequencies

Applications

• RF impedance matching networks
• Antenna tuning systems
• Phase shifting applications
• Beamforming network adjustments

Procurement Notes

Verify the specific suffix 'B' against official pSemi documentation to confirm exact pinout and electrical specifications, as variations may exist within the family. Ensure compatibility with the target system's SPI protocol and voltage levels. Cross-reference the RoHS status details provided by the manufacturer. Confirm that the 10-QFN footprint matches the PCB design requirements. Validate the operating temperature range against environmental constraints.

Selection Notes

Select this component when a compact, digitally controlled variable capacitor is required for RF signal path adjustment. The choice is driven by the need for precise capacitance control without mechanical parts. Consider the low profile and small footprint for space-constrained designs. Evaluate the integration of bias generation and ESD protection as key differentiators. Assess the suitability for applications requiring rapid tuning speeds and high reliability.

Part Context

This part belongs to pSemi's UltraCMOS product family, which leverages advanced CMOS processes for RF applications. The DuNE technology enhances performance metrics such as linearity and power handling. It serves as a modern replacement for traditional varactors or MEMS capacitors in wireless communication systems. The series emphasizes digital control interfaces for ease of integration into microcontroller-based designs.

Replacement Considerations

The PE64908MLAA-Z is identified as a discontinued alternative, with the PE64906B-Z listed as a similar substitute. Verify functional equivalence regarding pinout and electrical parameters before substitution. Ensure that any replacement maintains compatibility with the existing SPI interface and physical mounting constraints.