ADCLK944BCPZ-R2

Clock Buffers, Drivers Overview

The ADCLK944BCPZ-R2 is a high-performance clock fanout buffer fabricated on Analog Devices' proprietary XFCB3 silicon germanium (SiGe) bipolar process. It features one differential input and four LVPECL outputs, operating at frequencies up to 7.0 GHz with a broadband random jitter of 50 fs rms. The device accepts various input formats including LVPECL, CML, LVDS, and CMOS via the CLK/CLK pins and VT reference. Powered by a supply voltage between 2.375 V and 3.63 V, it includes on-chip 100 Ω differential input termination. Housed in a 16-lead LFCSP package, it supports operation from -40°C to +85°C.

Clock Buffers, Drivers Feature Summary

• Four full-swing LVPECL outputs with 7.0 GHz maximum frequency
• Broadband random jitter specification of 50 fs rms
• Integrated 100 Ω differential input termination resistors
• Supports multiple input types: LVPECL, CML, LVDS, and CMOS

Clock Buffers, Drivers Applications

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

Clock Buffers, Drivers Procurement Notes

Verify the specific ordering suffix for packaging requirements. The -R2 suffix indicates Tape & Reel packaging, while -R7 denotes Cut Tape. Confirm RoHS compliance status as indicated by the 'Z' in the part number. Ensure availability matches current manufacturing status, as supply conditions may vary by region and distributor.

Clock Buffers, Drivers Selection Notes

Select this component when low added jitter is critical for high-speed clock distribution. Ensure the input signal slew rate exceeds 1 V/ns to maintain optimal jitter performance. Verify that the receiving buffers are compatible with LVPECL levels or require appropriate termination networks referenced to VCC - 2 V. Consider thermal management through the exposed pad connected to VEE for heat dissipation.

Clock Buffers, Drivers Part Context

The ADCLK944BCPZ-R2 belongs to the ADCLK944 series of SiGe clock buffers. It is functionally identical to the ADCLK944BCPZ-R7 but differs in packaging format. The device utilizes Analog Devices' advanced XFCB3 process technology to achieve ultrafast switching speeds and minimal phase noise characteristics suitable for demanding RF and digital applications.

Clock Buffers, Drivers Replacement Considerations

The ADCLK944BCPZ-R7 is a direct functional substitute with identical electrical specifications, differing only in packaging (Cut Tape vs. Tape & Reel). No other cross-model replacements are confirmed in the provided documentation.