ZL30693LFG7

Overview

The ZL30693LFG7 is a three-channel, ten-input, eighteen-output system synchronizer from Microchip Technology. It integrates three digital phase-locked loops (DPLLs) and five output frequency families to support carrier-grade timing applications. The device accepts input frequencies from 0.5Hz to 900MHz and generates outputs up to 1045MHz with high-resolution fractional conversion. Key features include programmable bandwidth (0.1mHz to 470Hz), hitless reference switching, and precise per-DPLL and per-output phase adjustment with 1ps resolution. It operates within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Three independent DPLL channels supporting ITU-T G.8262, G.813, G.812, and G.8273.2 standards
• Ten inputs accepting differential or CMOS signals from 0.5Hz to 900MHz with 1ps phase measurement
• Five output frequency families including two low-jitter synthesizers (<0.3ps RMS jitter) and one general-purpose synthesizer
• Automatic self-configuration at power-up from internal Flash memory without external components

Applications

• Central system timing for Synchronous Ethernet (SyncE)
• Timing solutions for SONET/SDH and OTN networks
• Wireless base station synchronization
• G.8262/813 EEC/SEC and Telcordia Stratum 2-4 compliance

Procurement Notes

Verify the specific ordering suffix LFG7 corresponds to the 80-lead LGA package with NiAu finish and tray packaging. Confirm that the component meets RoHS requirements as specified in the product brief. Ensure compatibility with the required operating voltage levels and interface protocols before finalizing procurement.

Selection Notes

Select the ZL30693LFG7 when three independent DPLL channels are required for complex synchronization topologies. This model provides the highest channel count within the ZL3069x family compared to the single-channel ZL30691 or dual-channel ZL30692 variants. Consider the 80-lead LGA package dimensions and thermal characteristics for PCB layout constraints.

Part Context

The ZL30693LFG7 belongs to the ZL3069x series of system synchronizers, which also includes the ZL30691 and ZL30692 models. These devices share a common architecture but differ in the number of integrated DPLL channels. The ZL30693 specifically offers three channels to handle more extensive timing distribution requirements in central office environments.

Replacement Considerations

Direct replacements within the same package and functionality include the ZL30691LFG7 and ZL30692LFG7, though these offer fewer DPLL channels. Verify if the reduced channel count of these alternatives meets the specific design requirements.