AD9571ACPZPEC-RL

Overview

The AD9571ACPZPEC-RL is a multioutput clock generator featuring a dedicated PLL core optimized for Ethernet line card applications. It operates on a single 3.3 V supply within a −40°C to +85°C temperature range and utilizes a 6 mm × 6 mm 40-lead LFCSP package. The device generates frequencies up to 156.25 MHz with an input reference of 25 MHz. Key electrical parameters include 0.17 ps rms jitter at 156.25 MHz (1.875 MHz to 20 MHz) and 0.41 ps rms jitter at 125 MHz (12 kHz to 20 MHz). Power dissipation is specified at 0.48 W for LVDS operation and 0.69 W for LVPECL operation.

Feature Summary

• Fully integrated VCO/PLL core with preprogrammed feedback and output dividers, eliminating the need for external loop filter components.
• Provides ten clock outputs: six 25 MHz CMOS copies, one 33.33 MHz CMOS, two differential LVPECL/LVDS outputs (100 MHz or 125 MHz), and one differential LVPECL/LVDS output (156.25 MHz).
• Factory-configured LVPECL or LVDS output formats selectable via strapping pins, supporting low jitter performance down to 0.17 ps rms.
• Includes an internal crystal oscillator requiring only a 25 MHz fundamental mode crystal with 50 Ω ESR.

Applications

• Ethernet line cards, switches, and routers
• SCSI, SATA, and PCI-express systems
• Low jitter, low phase noise clock generation

Procurement Notes

Verify the ordering suffix PEC against the manufacturer's current documentation to confirm the specific output format configuration. Ensure the component meets moisture sensitivity level requirements during storage and handling. Confirm that the reel packaging matches the required factory pack quantity for production integration.

Selection Notes

Select this component when designing Ethernet infrastructure requiring precise clocking without processor intervention. The fixed divide ratios support standard rates including 156.25 MHz, 125 MHz, 100 MHz, and 33.33 MHz. Consider the power dissipation limits of 0.69 W for LVPECL configurations when planning thermal management for the 40-lead LFCSP package.

Part Context

This part belongs to the Analog Devices AD9571 series of clock generators. The AD9571 family is designed to maximize network performance using integer-N PLL technology derived from established frequency synthesizer portfolios. Variants within the series may differ in output count or specific interface configurations.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.