LTC6951IUHF#TRPBF

Clock Generators, PLLs, Frequency Synthesizers Overview

The LTC6951IUHF#TRPBF is an ultralow jitter multioutput clock synthesizer with an integrated voltage-controlled oscillator (VCO). It features a low noise integer-N PLL architecture. The device provides five independent outputs: four low skew CML signals and one LVDS signal. Output frequencies range from 1.95MHz to 2.5GHz. Key electrical parameters include a reference input frequency up to 425MHz, VCO tuning sensitivity of 2.5% to 3.7% Hz/V, and charge pump current settings ranging from 1.0mA to 11.2mA. The component operates within a junction temperature range of –40°C to 105°C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Integrated low noise VCO requiring no external components
• Output jitter of 90fs RMS (12kHz to 20MHz) and 115fs RMS (ADC SNR Method)
• Five independent outputs: four CML and one LVDS
• EZSync and ParallelSync multichip synchronization support

Clock Generators, PLLs, Frequency Synthesizers Applications

• High performance data converter clocking
• Wireless infrastructure systems
• Test and measurement equipment

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the ordering suffix #TRPBF indicates tape and reel packaging when sourcing this specific part number. Confirm the manufacturer designation as Analog Devices Inc. or Linear Technology. Ensure the package type matches the 40-lead 5mm x 7mm plastic QFN specification required for the IUHF variant.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select the standard LTC6951 for output frequencies outside the 2.5GHz to 2.7GHz, 1.66GHz to 1.8GHz, or 1.25GHz to 1.35GHz ranges. Use the LTC6951-1 variant if any desired output frequency falls within those specific higher bands. Consider the thermal resistance requirements for the exposed pad soldering to maintain junction temperatures below 105°C.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the LTC6951 family of clock synthesizers. The IUHF suffix denotes the 40-lead plastic QFN package. The #TRPBF suffix specifies the tape and reel shipping format. This part is designed for applications requiring precise phase alignment and low jitter across multiple synchronized channels.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

The LTC6951IUHF-1#TRPBF serves as a functional substitute for higher frequency requirements. Verify that the replacement supports the necessary output frequency ranges, specifically checking for coverage of the 2.5GHz to 2.7GHz band if applicable.