ADCLK854BCPZ

Clock Buffers, Drivers Overview

The ADCLK854BCPZ is a low-power clock fanout buffer from Analog Devices, housed in a 48-pin LFCSP package. It features two selectable differential inputs and supports up to 12 LVDS outputs at 1.2 GHz or 24 CMOS outputs at 250 MHz. The device operates on a 1.8 V supply (1.71 V to 1.89 V) within an industrial temperature range of -40°C to +85°C. Key electrical specifications include 54 fs rms integrated jitter (12 kHz to 20 MHz), 100 fs rms additive broadband jitter, and a typical propagation delay of 2.0 ns for LVDS outputs.

Clock Buffers, Drivers Feature Summary

• Configurable output logic: Selectable between 12 LVDS (1.2 GHz max) or 24 CMOS (250 MHz max) outputs via CTRL_A, CTRL_B, and CTRL_C pins.
• Low jitter performance: 54 fs rms integrated jitter (12 kHz to 20 MHz) and 100 fs rms additive broadband jitter.
• Dual input selection: Two differential clock inputs (CLK0/CLK1) with IN_SEL pin control.
• Power management: Sleep mode feature for power-down; <12 mW per channel at 100 MHz operation.

Clock Buffers, Drivers Applications

• Low jitter clock distribution systems
• Clock and data signal restoration
• Level translation between different logic families
• Wireless and wired communications infrastructure
• Medical and industrial imaging equipment

Clock Buffers, Drivers Procurement Notes

Verify the specific suffix 'BCPZ' against the manufacturer's ordering guide to confirm package type (LFCSP-48) and temperature grade. Ensure the procurement source provides the official datasheet Rev. A for accurate timing and electrical characteristics. Confirm RoHS compliance status as indicated in the product documentation.

Clock Buffers, Drivers Selection Notes

Select this component when a single buffer must drive mixed LVDS and CMOS loads simultaneously. The device allows independent configuration of three output banks (four outputs each). Ensure the input signal slew rate exceeds 1 V/ns to maintain optimal jitter performance. Verify that the PCB layout accommodates the exposed paddle thermal connection to ground.

Clock Buffers, Drivers Part Context

The ADCLK854BCPZ belongs to the ADCLK854 series of clock buffers. It is designed to replace discrete buffering solutions by integrating multiple driver types into one chip. The part is optimized for applications requiring high fan-out ratios with minimal added jitter, serving as a central distribution point for high-speed digital systems.

Clock Buffers, Drivers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Check the manufacturer's ordering guide for any updated revisions or alternative packages within the same family before substitution.

Clock Buffers, Drivers FAQ

How are the LVDS and CMOS outputs configured?

The outputs are grouped into three banks of four. The CTRL_A, CTRL_B, and CTRL_C pins determine whether each bank operates as LVDS (logic low) or CMOS (logic high).

What is the maximum input frequency supported?

The device supports a maximum differential input frequency of 1.2 GHz for LVDS outputs and 250 MHz for CMOS outputs.

How does the sleep mode function?

Pulling the SLEEP pin high activates sleep mode, which powers down the device except for the internal bandgap and places all outputs in a high-Z state.