591RD-DDG

Programmable Oscillators Overview

The Skyworks Solutions Inc. 591RD-DDG is a programmable crystal oscillator (XO) from the Si591 series, designed for general-purpose clocking applications. It operates within a frequency range of 10 MHz to 810 MHz and delivers an LVPECL output format. The device supports a supply voltage of 2.5 V with a typical current consumption of 110 mA. It features a frequency stability of 7 ppm and includes an enable/disable control function. The component is housed in a compact 6-SMD, no-lead package measuring 7 mm x 5 mm x 1.65 mm, suitable for surface-mount assembly.

Programmable Oscillators Feature Summary

• Programmable architecture allows customization of output frequency within the specified operational range.
• Provides low-phase-noise LVPECL differential output signals for high-speed digital interfaces.
• Integrates an enable pin to manage power consumption by controlling oscillator operation.

Programmable Oscillators Applications

• High-performance networking equipment requiring precise clock distribution
• Telecommunications infrastructure systems
• Data center interconnects and server motherboards
• Test and measurement instrumentation

Programmable Oscillators Procurement Notes

Verify the specific programming parameters required for your application, as this is a programmable device. Confirm that the LVPECL output format aligns with your receiver inputs. Ensure the 2.5 V supply voltage matches your system design. Check the latest datasheet for any updates regarding lead times or manufacturing changes. Validate that the 7 ppm stability meets your system jitter requirements.

Programmable Oscillators Selection Notes

Select this model when a fixed-frequency oscillator does not meet specific timing needs. The Si591 series offers flexibility through programmability. Consider the LVPECL output if driving long traces or multiple loads. Evaluate the 7 ppm stability against other series options like the 591AA or 591BB if tighter or looser tolerances are needed. Ensure the 7x5 mm footprint fits your PCB layout constraints.

Programmable Oscillators Part Context

The 591RD-DDG belongs to the Si591 family of standard oscillators, which are known for their low phase noise and small form factor. This series is widely used in high-speed serial links and parallel bus architectures. Unlike fixed-frequency parts, the RD suffix indicates a programmable variant, allowing designers to tailor the frequency during production or deployment.

Programmable Oscillators Replacement Considerations

Publicly confirmed parameter-equivalent substitutes include the 591RD-DGR (tape and reel version). Other Si591 variants may serve as alternatives if frequency or output format adjustments are acceptable. Verify compatibility before substitution.