ZL30663LFG7

Overview

The ZL30663LFG7 is a three-channel, ten-input, eighteen-output line card timing IC manufactured by Microchip Technology. It integrates three Digital Phase-Locked Loops (DPLLs) and five synthesizers to support SyncE, SONET/SDH, OTN, and wireless base station applications. The device accepts input frequencies from 1kHz to 900MHz and generates output frequencies up to 1045MHz with high-resolution fractional conversion. Key electrical parameters include programmable DPLL bandwidths of 14Hz to 470Hz, per-phase adjustments with 1ps resolution, and output jitter typically below 1ps RMS for fractional dividers. It operates within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Three independent DPLL channels with programmable bandwidth (14Hz to 470Hz) and hitless reference switching capabilities.
• Ten input pins accepting differential or CMOS signals from 1kHz to 900MHz, supporting REF+SYNC frequency/phase/time locking.
• Five synthesizer families providing output frequencies from <1Hz to 1045MHz with less than 1ps RMS jitter on fractional dividers.
• Eighteen outputs configurable as LVDS, LVPECL, HCSL, HSTL, or CMOS, featuring per-output glitchless start/stop and phase alignment.

Applications

• Synchronous Ethernet (SyncE) line cards
• SONET/SDH and OTN transmission systems
• Wireless base station timing infrastructure
• Carrier-grade system synchronization

Procurement Notes

Verify the specific ordering suffix LFG7 to confirm the 80-lead LGA package configuration and NiAu lead finish. Ensure that the required channel count aligns with the ZL30663 variant, which provides three DPLLs compared to the single or dual-channel alternatives in the family. Confirm internal Flash memory self-configuration requirements are met during system power-up sequences.

Selection Notes

Select the ZL30663 when three independent DPLL channels are necessary for complex timing architectures. Evaluate the input frequency range against the 900MHz maximum limit and ensure the output jitter specifications meet the requirements of downstream components such as FPGAs or ASICs. Consider the local oscillator options, including XO, TCXO, or OCXO connections, based on the stability requirements of the target application.

Part Context

The ZL30663LFG7 belongs to the ZL3066x family of line card timing ICs, which also includes the ZL30661 (1-channel) and ZL30662 (2-channel). All variants share the same 80-lead LGA package and core architecture but differ in the number of integrated DPLL channels. This family is designed to replace traditional discrete timing solutions by integrating multiple synthesizers and reference monitors into a single component.

Replacement Considerations

Public confirmed substitute part numbers: ZL30662LFG7, ZL30661LFG7.