AD9508BCPZ

Overview

The AD9508BCPZ is a 1.65 GHz clock fanout buffer with integrated output dividers and delay adjustment, manufactured by Analog Devices Inc. It provides low jitter performance for high-speed data converter applications. The device features four independent differential outputs configurable as LVDS, HSTL, or CMOS (single-ended). It supports 10-bit programmable integer division ratios from 1 to 1024 and includes phase offset selection for coarse delay adjustment between outputs. Powered by a single 2.5 V or 3.3 V supply, it operates within a temperature range of −40°C to +85°C in a 24-lead LFCSP package.

Feature Summary

• 1.65 GHz differential clock input/output capability
• Additive output jitter of 41 fs rms typical (12 kHz to 20 MHz)
• Four independent outputs supporting LVDS, HSTL, or 1.8 V CMOS logic levels
• 10-bit programmable dividers with integer ratios from 1 to 1024

Applications

• Low jitter, low phase noise clock distribution systems
• Clocking high-speed ADCs, DACs, DDSs, DDCs, DUCs, and MxFEs
• High-performance wireless transceivers
• Broadband infrastructure equipment

Procurement Notes

Verify the specific suffix BCPZ corresponds to the standard commercial grade variant in the 24-LFCSP package. Confirm that the ordering information matches the manufacturer's current datasheet revision G specifications. Ensure compatibility with the required power supply voltage (2.5 V or 3.3 V) and interface protocol (SPI/I2C or pin strapping) before procurement.

Selection Notes

Select this component when designing systems requiring sub-picosecond additive jitter performance for clocking high-speed converters. Choose based on the required output logic level (LVDS, HSTL, or CMOS) and the maximum frequency of the divided output signals. Consider the thermal characteristics of the 24-lead LFCSP package if operating at high frequencies with significant load capacitance.

Part Context

The AD9508BCPZ belongs to the AD9508 series of clock fanout buffers. It is designed to complement Analog Devices' high-speed data converter portfolio by providing precise timing signals. The device integrates an internal LDO regulator to enhance power supply immunity, distinguishing it from simpler buffer-only solutions.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify functional equivalence regarding jitter specs, output configuration, and package dimensions if considering alternative vendors.