ZL30673LFG7

Overview

The ZL30673LFG7 is a three-channel, ten-input, eighteen-output system synchronizer from Microchip Technology. It integrates three Digital Phase-Locked Loops (DPLLs) and five synthesizers to provide precise timing synchronization for carrier-grade systems. The device accepts input frequencies from 0.5Hz to 900MHz and generates output frequencies up to 1045MHz with high-resolution fractional conversion. Key electrical parameters include programmable DPLL bandwidth from 0.1mHz to 470Hz, output jitter typically less than 1ps RMS for fractional dividers, and per-phase adjustment resolution of 1ps. It operates within an industrial temperature range of -40°C to +85°C and utilizes an 80-lead LGA package.

Feature Summary

• Three independent DPLL channels supporting ITU-T G.8262, G.813, G.812, and G.8273.2 standards
• Ten input pins accepting differential or CMOS signals from 0.5Hz to 900MHz with 1ps phase measurement resolution
• Five synthesizers providing output frequencies up to 1045MHz with <1ps RMS jitter for fractional dividers
• Supports REF+SYNC locking for fast frequency/phase/time alignment using 1PPS inputs

Applications

• Central system timing ICs for Synchronous Ethernet (SyncE)
• Timing solutions for SONET/SDH and OTN networks
• Wireless base station infrastructure requiring Stratum 2-4 compliance
• IEEE 1588 Precision Time Protocol (PTP) synchronization systems

Procurement Notes

Verify the specific ordering suffix 'LFG7' corresponds to the 80-lead LGA package with NiAu finish and industrial temperature range (-40°C to +85°C). Confirm that the component is sourced as a tray-packaged unit. Ensure compatibility with existing SPI or I2C configuration interfaces during procurement planning.

Selection Notes

Select the ZL30673LFG7 when three independent DPLL channels are required for complex synchronization topologies. This model supports up to ten reference inputs and eighteen outputs, accommodating designs needing extensive clock distribution. Choose this variant over the ZL30671 or ZL30672 if the application demands multiple simultaneous SyncE or 1588 streams with independent holdover capabilities.

Part Context

The ZL30673LFG7 belongs to the ZL3067x family of system synchronizers, which also includes the single-channel ZL30671 and dual-channel ZL30672. All models share the same 80-lead LGA package footprint and core architecture but differ in the number of integrated DPLL channels and available output synthesizers. The ZL30673 represents the highest channel count in this specific series.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should verify pinout and register compatibility if considering alternative timing devices from other manufacturers.