ADCLK948BCPZ

Clock Buffers, Drivers Overview

The ADCLK948BCPZ is an ultrafast clock fanout buffer fabricated on a proprietary SiGe bipolar process. It features two selectable differential inputs and eight LVPECL outputs, supporting a maximum operating frequency of 4.8 GHz. The device accepts CML, CMOS, LVDS, and LVPECL input signals with integrated 100 Ω differential termination. Key electrical specifications include a typical propagation delay of 210 ps, output-to-output skew of 25 ps, and broadband random jitter of 75 fs rms. It operates on a single 3.3 V supply (2.97 V to 3.63 V) within the industrial temperature range of -40°C to +85°C.

Clock Buffers, Drivers Feature Summary

• Two selectable differential inputs via IN_SEL pin with center-tapped 100 Ω on-chip termination
• Eight full-swing LVPECL output drivers designed for direct driving into 50 Ω terminated lines
• Ultra-low additive jitter performance: 75 fs rms broadband random jitter at 4.8 GHz
• High-speed operation up to 4.8 GHz with typical propagation delay of 210 ps

Clock Buffers, Drivers Applications

• Low jitter clock distribution networks
• Clock and data signal restoration in high-speed systems
• Wireless and wired communications infrastructure
• Medical and industrial imaging equipment
• ATE and high-performance instrumentation

Clock Buffers, Drivers Procurement Notes

Verify that the package option CP-32-21 matches the target PCB footprint. Ensure the design supports the exposed pad connection to the VEE power plane for proper functionality and thermal dissipation. Confirm RoHS compliance requirements align with the Z suffix designation.

Clock Buffers, Drivers Selection Notes

Select this component when low phase noise and minimal added jitter are critical for timing integrity. The device requires a 3.3 V supply and supports multiple input logic levels including LVDS and CML. Consider the 32-LFCSP package constraints and thermal management needs due to the junction-to-ambient resistance characteristics.

Clock Buffers, Drivers Part Context

This part belongs to the Analog Devices SiGe clock buffer family, specifically designed for Gigabit Logic applications. It serves as a high-performance alternative to standard CMOS buffers in scenarios requiring precise clock synchronization across multiple channels without significant signal degradation.

Clock Buffers, Drivers Replacement Considerations

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