ZL30640LDG1

Overview

The ZL30640LDG1 is a TimeBuffer device featuring up to 10 inputs and 20 outputs, designed for time signal fanout and conversion. It accepts differential or single-ended inputs ranging from 1 kHz to 250 MHz and generates outputs from 0.5 Hz to 500 MHz. The device includes two DPLLs for buffer channel and input phase/frequency measurement, supporting Ref-Sync pair and embedded Sync signals. It operates with core power consumption under 0.9W and utilizes a VQFN-64 package.

Feature Summary

• Up to 10 inputs (differential/single-ended) and 20 outputs (10 differential/20 CMOS)
• Two DPLLs for buffer channel and input phase/frequency measurement
• Input-to-output alignment less than 200 ps with external feedback
• Automatic self-configuration at power-up from internal Flash memory

Applications

• Companion time-signal fanout device for timing card or line card timing ICs in telecom systems
• Companion phase/frequency measurement device for timing card or line card timing ICs
• JESD204B clocking: clock and SYSREF signal generation with skew adjustment

Procurement Notes

Verify the specific ordering suffix against official Microchip documentation to confirm package type and temperature range. Confirm interface compatibility with SPI or I2C controllers during system design. Ensure power supply requirements for 1.8V and 3.3V core VDD voltages are met.

Selection Notes

Select this component when requiring high-density time signal distribution with up to 20 outputs. Consider its capability for Ref-Sync to embedded Sync conversion if precise phase alignment is needed. Verify that the input frequency range of 1 kHz to 250 MHz matches the source signals.

Part Context

The ZL30640 belongs to Microchip's TimeBuffer family, specialized for telecom timing applications. It complements main timing ICs by providing extensive fanout and precise phase measurement capabilities. The device supports various output formats including LVDS, LVPECL, HCSL, and CMOS.

Replacement Considerations

Consult official Microchip cross-reference guides for verified substitutes. Ensure any replacement maintains the 64-lead VQFN footprint and supports similar input/output counts.