DS4266P+

Overview

The DS4266P+ is a surface-mount ceramic crystal oscillator from the DS4-XO family, designed for high-performance DDR memory applications. It generates a nominal output frequency of 266MHz with an overall accuracy and stability better than ±50ppm, including aging effects. The device utilizes fundamental crystal technology combined with silicon germanium PLL to achieve low phase noise and jitter performance below 0.7ps RMS typically over a 12kHz to 20MHz bandwidth. It operates from a 3.3V ±5% power supply (3.135V to 3.465V) and consumes a maximum current of 100mA. The component supports LVPECL output types and is housed in a miniature 10-lead LCCC package measuring 5mm x 3.2mm x 1.49mm.

Feature Summary

• Low Jitter Performance: Integrated phase RMS jitter is typically less than 0.7ps over a 12kHz to 20MHz bandwidth.
• LVPECL Output Configuration: Provides differential LVPECL outputs with duty-cycle performance better than 48%/52%.
• Compact Package: Encased in a 10-pin LCCC ceramic package (5mm x 3.2mm x 1.49mm) suitable for space-constrained designs.
• Wide Operating Range: Supports an operating temperature range of -40°C to +85°C.

Applications

• DDR Memory Clock Source
• High-performance memory systems requiring stable clock signals

Procurement Notes

Verify the specific ordering suffix 'P+' confirms the LVPECL output type, as the 'D+' variant offers LVDS. Confirm RoHS compliance status and lead finish specifications (JESD97 category e4) against current manufacturing standards. Check for end-of-life notices or discontinuance updates from Analog Devices/Maxim Integrated prior to procurement.

Selection Notes

Select the DS4266P+ when LVPECL signaling is required for the target DDR interface. Ensure the design accommodates the 3.3V ±5% supply voltage range and the maximum 100mA current consumption. Verify that the PCB layout supports the 10-LCCC exposed pad package dimensions and thermal requirements.

Part Context

The DS4266P+ belongs to the DS4-XO series of crystal oscillators manufactured by Analog Devices Inc./Maxim Integrated. This series includes variants with different frequencies and output types, such as the DS4266D+ which provides LVDS outputs instead of LVPECL. The component is part of Maxim's portfolio for timing solutions in memory applications.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Designers should consult the manufacturer for obsolescence management or equivalent alternatives within the DS4-XO family if sourcing becomes restricted.

FAQ

What is the difference between the DS4266D+ and DS4266P+?

The primary difference is the output type. The DS4266D+ provides LVDS outputs, while the DS4266P+ provides LVPECL outputs. Both share the same 266MHz frequency and package.

How is the OE pin configured?

The OE (Output Enable) pin is active-high and has an internal 100kΩ pullup resistor. When OE is low, the outputs are disabled; when high, they are active.

What is the typical jitter performance of the DS4266P+?

The integrated phase RMS jitter is typically better than 0.7ps over a bandwidth of 12kHz to 20MHz at VCC = 3.3V and TA = +25°C.