ZL30792LFF7

Overview

The ZL30792LFF7 is a dual-channel IEEE 1588 and Synchronous Ethernet packet clock network synchronizer manufactured by Microchip Technology. It features two independent Digital Phase-Locked Loops (DPLLs) for physical-layer and packet-timing synchronization, supporting ITU-T G.8262, G.8263, and G.8273.2 standards. The device accepts up to ten differential or CMOS inputs ranging from 0.5Hz to 900MHz and generates outputs from <0.5Hz to 1045MHz with sub-picosecond jitter. Packaged in an 80-lead LGA, it operates between -40°C and +85°C.

Feature Summary

• Dual DPLL channels providing hitless reference switching and programmable bandwidth from 0.1mHz to 470Hz
• Supports up to 10 input clocks (0.5Hz–900MHz) and 16 single-ended or 8 differential outputs (<0.5Hz–1045MHz)
• Compliant with ITU-T G.8262, G.8263, and G.8273.2 standards for carrier-grade timing applications
• Includes internal Flash memory for automatic self-configuration at power-up

Applications

• Central system timing ICs for SyncE and IEEE 1588 networks
• SONET/SDH and OTN transmission systems
• Wireless base stations requiring sub-100ns time alignment
• G.8262/813 EEC/SEC and Telcordia Stratum 2-4 implementations

Procurement Notes

Verify the specific ordering suffix 'LFF7' against the manufacturer's current documentation to confirm package type and environmental compliance. Confirm that the required configuration data is compatible with the internal Flash memory programming capabilities of this component.

Selection Notes

Select the ZL30792LFF7 when a dual-channel architecture is sufficient for frequency, phase, and time synchronization requirements. Ensure the application utilizes the supported input frequencies up to 900MHz and output frequencies up to 1045MHz. Verify that the 80-lead LGA package fits the board layout constraints.

Part Context

This part belongs to the ZL3079x family of packet clock network synchronizers. The ZL30791 provides one channel, while the ZL30793 provides three channels. All variants share identical core synthesizer and interface specifications, differing primarily in the number of available DPLL channels.

Replacement Considerations

The ZL30791LFG7 and ZL30793LFG7 are direct functional alternatives within the same product family, offering single and triple channel configurations respectively. These parts utilize the same 80-lead LGA package and support identical electrical parameters.