ZL30291LDG1

Overview

The ZL30291LDG1 is a clock generator compliant with Intel CK440Q and PCIe Gen 1/2/3/4/5/6 specifications. It features 19 low-power push-pull HCSL outputs, including seven dedicated 100 MHz, three dedicated 25 MHz, and nine selectable 25/100 MHz outputs. The device operates on a 3.3V ±10% supply within an industrial temperature range of -40°C to +85°C. Key electrical parameters include a maximum jitter of 80 fs, maximum output-to-output skew of 50 ps, and embedded source terminations for differential pairs.

Feature Summary

• Fully compliant with Intel CK440Q specification and PCIe Gen 1 through Gen 6 standards.
• Provides 19 low-power push-pull HCSL outputs with embedded source terminations.
• Features ultra-low jitter (max 80 fs) and programmable spread spectrum modulation on 100 MHz outputs.
• Includes SMBus and Side-Band Interface (SBI) for configuration and control.

Applications

• PCIe Gen 1/2/3/4/5/6 clock generation
• Platform tuning in server architectures
• Intel QPI/UPI interconnects
• Storage systems and data centers
• Network switches and routers

Procurement Notes

Verify the specific ordering suffix 'LDG1' against the manufacturer's current Product Identification System to confirm package type and environmental compliance details. Ensure the procurement channel provides the official datasheet DS20006463D for accurate pinout and electrical characteristic verification prior to integration.

Selection Notes

Select this component for designs requiring strict adherence to the Intel CK440Q timing standard. The device supports up to eight CPUs when paired with compatible clock buffers like the ZL40292 or ZL40294. Verify that the system power supply maintains the required 3.3V ±10% tolerance to meet PCIe electromechanical specifications.

Part Context

The ZL30291 series serves as a primary timing solution for high-performance server platforms utilizing Intel processors. It replaces legacy timing devices by integrating platform time inputs/outputs and supporting the evolving requirements of next-generation PCIe interfaces while maintaining compatibility with established server infrastructure protocols.

Replacement Considerations

For multi-CPU configurations exceeding two processors, the ZL30291 should be used in conjunction with ZL40292 or ZL40294 clock buffers to distribute signals effectively. Direct replacement requires verifying that the target application does not exceed the single-device output drive capabilities defined in the CK440Q specification.