ZL30631LDG1

Overview

The ZL30631LDG1 is a system 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 from 0.5 Hz to 750 MHz. The device includes up to eight DPLLs for timing compliance with ITU-T G.8262 and G.813 standards. Output jitter is typically 100 fsRMS at 156.25 MHz (12 kHz to 20 MHz bandwidth). Core power consumption is less than 0.9W. It operates with 1.8V and 3.3V core VDD voltages and utilizes an SPI or I2C interface.

Feature Summary

• Up to five independent clock channels with any-to-any frequency conversion
• Supports up to 10 differential/CMOS inputs and 20 CMOS/10 differential outputs
• Up to 8 DPLLs compliant with ITU-T G.8262, G.8262.1, G.813, and G.812
• Output jitter of 100 fsRMS typical at 156.25 MHz

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current product brief to confirm package type and temperature range. Ensure compatibility with required supply voltages (1.8V and 3.3V) and interface protocols (SPI/I2C). Confirm that the internal Flash memory configuration meets the application's power-up requirements without external components.

Selection Notes

Select this component when requiring high-density clock distribution with flexible frequency conversion capabilities. The ZL30631 supports split-XO configurations using separate stability and jitter references to optimize cost. Verify that the required number of DPLLs and synthesizers fits within the five-channel limit. Check if the 1 ps phase adjustment resolution meets the system's alignment needs.

Part Context

The ZL30631 is part of the ZL3063x family of system synchronizers, which also includes models ZL30632 through ZL30635. These devices share a common architecture but differ in the number of available DPLLs and synthesizer channels. The ZL30631 represents a specific configuration within this series designed for carrier-grade synchronization applications.

Replacement Considerations

Direct replacements within the same family include ZL30632, ZL30633, ZL30634, and ZL30635. Selection depends on whether the additional DPLLs or synthesizer channels offered by higher-numbered models are necessary for the design.