CDC421100RGER

Clock Generators, PLLs, Frequency Synthesizers Overview

The CDC421100RGER is a fully integrated fixed-frequency low-jitter clock generator manufactured by Texas Instruments. It operates on a single 3.3 V supply and features an integrated LC-based voltage-controlled oscillator (VCO) running between 1.75 GHz and 2.35 GHz. The device accepts crystal or LVCMOS input frequencies of 33.33 MHz to generate a precise 100 MHz output. It provides differential LVPECL outputs with typical power consumption of 300 mW. The component is housed in a QFN-24 package and supports industrial operating temperatures from -40 °C to +85 °C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Fully integrated crystal oscillator circuitry combined with a PLL-based frequency synthesizer
• Low phase noise performance with integrated jitter as low as 380 fs rms
• Includes chip-enable control pin for output management

Clock Generators, PLLs, Frequency Synthesizers Applications

• Low-cost, low-jitter frequency multiplier applications
• Systems requiring stable clock generation from external AT-cut crystals
• High-performance clock distribution networks

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific ordering suffix 'GER' corresponds to the tape and reel packaging format required for automated assembly processes. Confirm that the device marking code '421100' matches the intended 100 MHz output specification during incoming inspection. Ensure compliance with RoHS directives and moisture sensitivity level 2 handling protocols prior to soldering.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this part when a fixed 100 MHz output is required from a 33.33 MHz reference source without programmable configuration. Compare against other variants in the CDC421xxx family if different output frequencies such as 125 MHz or 212.5 MHz are needed. Ensure the design accommodates the QFN-24 exposed pad thermal requirements and LVPECL load conditions.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the CDC421xxx series of low-phase-noise clock generators. The series includes multiple variants offering fixed output frequencies ranging from 100 MHz to 312.5 MHz. All members share the same QFN-24 package and internal architecture but differ in their programmed multiplication ratios and corresponding input reference frequencies.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

CDC421100RGET serves as a direct alternative with identical electrical characteristics but utilizes small tape and reel packaging instead of standard tape and reel.