ZL30692LFG7

Overview

The ZL30692LFG7 is a dual-channel system synchronizer from Microchip Technology, housed in an 80-lead LGA package. It features two Digital Phase-Locked Loops (DPLLs) and accepts up to ten differential or CMOS inputs ranging from 0.5Hz to 900MHz. The device generates up to eighteen outputs with frequencies from <0.5Hz to 1045MHz, utilizing high-resolution fractional frequency conversion with 0ppm error. Key electrical parameters include output jitter of less than 0.3ps RMS for integer dividers and typically less than 1ps RMS for fractional dividers. It supports programmable bandwidths from 0.1mHz to 470Hz and operates within a temperature range of -40°C to +85°C.

Feature Summary

• Dual DPLL channels supporting ITU-T G.8262, G.813, G.812, and Telcordia GR-1244 standards.
• Accepts up to 10 inputs (0.5Hz to 900MHz) with per-input phase adjustment at 1ps resolution.
• Generates up to 18 outputs (<0.5Hz to 1045MHz) with low-jitter synthesizers and glitchless start/stop capabilities.
• Integrated local oscillator support for TCXO/OCXO stability references without external loop filters.

Applications

• Central system timing ICs for Synchronous Ethernet (SyncE).
• Timing solutions for SONET/SDH and OTN networks.
• Wireless base station synchronization systems.
• Carrier-grade telecom equipment requiring Stratum 2-4 compliance.

Procurement Notes

Verify the specific ordering suffix 'LFG7' corresponds to the 80-lead LGA tray packaging configuration. Confirm that the component meets RoHS requirements as indicated by the NiAu lead finish. Ensure compatibility with standard SPI or I2C programming interfaces during integration planning.

Selection Notes

Select this model specifically when two independent DPLL channels are required for reference switching and holdover operations. Compare against the ZL30691 if only one channel is needed, or the ZL30693 if three channels are necessary. Evaluate input/output count requirements against the fixed 10-input and 18-output architecture.

Part Context

This component belongs to the ZL3069x family of system synchronizers, which includes the single-channel ZL30691 and the triple-channel ZL30693. All variants share identical input/output architectures and core timing features, differing primarily in the number of integrated DPLL channels available for signal processing.

Replacement Considerations

Direct functional substitutes within the same package and pinout include the ZL30691LFG7 and ZL30693LFG7. Selection depends on whether fewer or additional DPLL channels are required for the specific application topology.