PL502-30WC

Clock Generators, PLLs, Frequency Synthesizers Overview

The PL502-30WC is a wafer-level monolithic low jitter and low phase noise Voltage Controlled Crystal Oscillator (VCXO) IC manufactured by Micrel Inc. It operates on a single 3.3V supply and supports output frequencies ranging from 750kHz to 800MHz, derived from a 12MHz to 25MHz crystal input. The device features selectable LVCMOS, LVPECL, or LVDS outputs with configurable drive strengths. Key electrical specifications include a wide pull range of ±200ppm, a tuning sensitivity of 150 ppm/V, and typical phase noise of -127dBc/Hz at 155.52MHz offset by 10kHz.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Low Phase Noise: Typical performance of -127dBc/Hz at 155.52MHz and -115dBc/Hz at 622.08MHz measured at a 10kHz offset.
• Flexible Output Formats: Selectable High Drive or Standard Drive LVCMOS, LVPECL, or LVDS via configuration pads.
• Wide Frequency Range: Generates output frequencies from 750kHz to 800MHz using internal dividers/multipliers (FXIN / 16 to FXIN x 32).
• Integrated Control: Requires no external load capacitors or varicaps; features a wide pull range of ±200ppm controlled by VCON.

Clock Generators, PLLs, Frequency Synthesizers Applications

• ADSL (Asymmetric Digital Subscriber Line) systems
• SONET (Synchronous Optical Networking) equipment
• Universal clock generation requiring low phase noise

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the ordering suffix 'W' indicates Wafer form factor rather than packaged die. Confirm that the specific wafer lot meets the required commercial temperature range (0°C to 70°C). Ensure handling procedures for bare silicon wafers are compatible with the manufacturing process, as this component is not supplied in standard surface-mount packages.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select the PL502-30 series when a universal VCXO solution is needed for frequencies between 750kHz and 800MHz. Choose the 'D' suffix for Die form if individual packaging is required, or 'W' for Wafer. Ensure the application crystal has a loading rating of 9.5pF and an ESR of approximately 30Ω to maintain nominal frequency accuracy at VCON = 1.65V.

Clock Generators, PLLs, Frequency Synthesizers Part Context

The PL502-30 is part of the PL502 family of low phase noise multipliers and VCXOs originally developed by Micrel Inc., which was later acquired by Microchip Technology. This specific model is designed as a universal die/wafer option, allowing system designers to integrate the oscillator directly into custom substrates or modules without the footprint constraints of traditional packages.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should verify compatibility with existing PLL502 variants or other Micrel VCXO families based on pin-out and electrical parameter requirements.