ZL30731LDG1S

Overview

The ZL30731LDG1S is a network synchronizer featuring up to five independent clock channels, ten inputs, and twenty outputs. It supports any-to-any frequency conversion with input frequencies from 0.5 Hz to 1250 MHz and output frequencies up to 750 MHz. The device includes eight DPLLs for precise phase locking and holdover, achieving typical output jitter of 100 fsRMS at 156.25 MHz. It operates on 1.8V and 3.3V supplies within a 64-lead VQFN package.

Feature Summary

• Up to five independent clock channels with any-to-any frequency conversion
• Eight DPLLs supporting hitless reference switching and high-resolution holdover
• Supports up to 10 differential or single-ended inputs and 20 CMOS outputs
• Compliance with ITU-T G.8262, G.8263, and IEEE 1588 standards

Applications

• Central system timing ICs for SyncE and SyncE+1588 routers and switches
• Wireless base stations including 3G, W-CDMA, 4G/LTE, LTE-A, and 5G
• Remote Radio Units (RRU) and wireless backhaul networks

Procurement Notes

Verify the 'S' suffix against official Microchip documentation to confirm specific packaging or temperature grade variations. Ensure compatibility with the required SPI/I2C configuration interface and validate power supply requirements for both 1.8V and 3.3V domains during integration.

Selection Notes

Select this model when requiring up to five independent synthesizers and eight DPLLs for complex synchronization topologies. Verify that the 64-lead VQFN package fits the PCB layout constraints and that the input/output count meets the system's clock distribution needs without exceeding the 750 MHz maximum output frequency.

Part Context

This component belongs to the ZL3073x family of PTP and SyncE network synchronizers. The ZL30731 variant specifically provides the highest channel count within the series, offering five channels, ten inputs, and twenty outputs for carrier-grade timing applications.

Replacement Considerations

ZL30732LDG1, ZL30733LDG1, ZL30734LDG1, ZL30735LDG1

FAQ

What is the maximum input frequency supported by the ZL30731?

The device accepts input clocks ranging from 0.5 Hz up to 1250 MHz.

How many DPLLs are included in the ZL30731?

The ZL30731 contains up to eight DPLLs, including those for clock I/O channels, NCO-hybrid mode, and split-XO configurations.

What is the typical output jitter performance?

The typical output jitter is 100 fsRMS for an output frequency of 156.25 MHz within the 12 kHz to 20 MHz bandwidth.