ZL30682LFG7

Overview

The ZL30682LFG7 is a dual-channel, 10-input, 18-output line card timing IC designed for carrier-grade synchronization. It integrates two digital phase-locked loops (DPLLs), five output frequency families, and supports up to 10 differential or CMOS inputs ranging from 1kHz to 900MHz. The device generates output clocks from <1Hz to 1045MHz with high-resolution fractional conversion and sub-picosecond jitter. Key features include hitless reference switching, programmable bandwidth (14Hz–470Hz), and per-DPLL/input/output phase adjustment at 1ps resolution. It operates within a -40°C to +85°C temperature range in an 80-lead LGA package.

Feature Summary

• Dual DPLL channels with programmable bandwidth (14Hz to 470Hz) and fast REF+SYNC locking for 1PPS alignment
• Supports up to 10 input references (CMOS or differential) with 1ps input-to-DPLL phase measurement
• Generates up to 18 outputs across five frequency families, including low-jitter synthesizers (<0.3ps RMS integer divider jitter)
• Hitless reference switching with revertive/nonrevertive algorithms and glitchless start/stop capabilities

Applications

• SyncE and SyncE+1588 line cards
• SONET/SDH and OTN systems
• Wireless base station synchronization

Procurement Notes

Verify the specific ordering suffix against official Microchip documentation to confirm package type and tray quantity. Confirm RoHS compliance status through the manufacturer's product compliance page before procurement. Ensure the supply chain source provides valid traceability for this component.

Selection Notes

Select the ZL30682LFG7 when two independent DPLL channels are required for redundancy or distinct timing domains. This model accommodates up to 10 input references and provides 18 total outputs, making it suitable for complex line card architectures requiring extensive clock distribution and precise phase alignment.

Part Context

This component belongs to the ZL3068x family of line card timing ICs, which includes the single-channel ZL30681 and triple-channel ZL30683 variants. All models share identical input/output counts and core timing features, differing only in the number of integrated DPLL channels available for system synchronization.

Replacement Considerations

The ZL30681LFG7 serves as a single-channel alternative, while the ZL30683LFG7 provides three DPLL channels. Both share the same 80-lead LGA package and pinout compatibility.