PE64904D-Z

Overview

The PE64904D-Z is a digitally tunable capacitor (DTC) from pSemi's UltraCMOS® and DuNE™ product families. It operates within a frequency range of 100 MHz to 3 GHz, supporting general-purpose RF applications. The device features a 3-wire SPI interface for digital control and requires a supply voltage between 2.3 V and 3.6 V. It is housed in a compact 10-lead QFN package with dimensions of 2 x 2 x 0.45 mm. The component is supplied in tape and reel packaging, with standard factory quantities of 3,000 units per reel.

Feature Summary

• Utilizes UltraCMOS® technology for high-performance digital tuning capabilities
• Integrates DuNE™ technology-enhanced digitally tunable capacitor functionality
• Supports direct digital control via a 3-wire SPI interface

Applications

• General-purpose RF IC modules requiring variable capacitance
• Antenna matching networks operating in the 100 MHz to 3 GHz range
• RF front-end components in wireless communication systems

Procurement Notes

Verify the specific suffix 'D-Z' against the official pSemi datasheet EK64904-14 to confirm pinout and electrical specifications. Ensure compatibility with the 2.3 V to 3.6 V supply range and 10-QFN footprint during integration. Confirm that the 3-wire SPI interface aligns with the host controller's digital logic levels and timing requirements before finalizing procurement.

Selection Notes

Select this component when a wide tuning range up to 3 GHz is required for RF signal path adjustment. The choice is driven by the need for precise digital control over capacitance values without mechanical parts. Consider the small 2 x 2 mm QFN package size for space-constrained designs. Verify that the system power budget accommodates the specified voltage range and that the SPI interface is available on the controlling microcontroller or FPGA.

Part Context

This part belongs to the PE64904 family of digitally tunable capacitors, which are designed for versatile RF applications. The PE64904D-Z represents a specific variant within the UltraCMOS® and DuNE™ enhanced series, offering improved performance characteristics compared to earlier generations. It serves as a modern replacement for traditional varactor diodes or MEMS tunable capacitors in high-frequency circuits.

Replacement Considerations

The manufacturer recommends the PE64904C-Z as an alternative; however, availability status should be verified as it may be discontinued. Both devices share the same 10-QFN package and functional specifications. Ensure that any substitute maintains compatibility with the 100 MHz to 3 GHz frequency range and SPI interface requirements.