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Analog Devices ADCLK944BCPZ-R7 — Clock & Timing ICs

ADCLK944BCPZ-R7 Clock Fanout Buffer 1:4 7GHz LFCSP

MPNADCLK944BCPZ-R7
End of Life

Analog Devices SiGe fanout buffer (distribution), ADCLK944BCPZ-R7, 1:4 ratio, 7 GHz max frequency, CML/CMOS/LVDS/LVPECL input, LVPECL output, 16-LFCSP-WQ (3x3 mm), -40°C to 85°C

$10.19Ref. price · indicative, final on quote
Packaging16-WFQFN Exposed Pad, CSP
RoHSROHS3 Compliant
SeriesSiGe
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

ADCLK944BCPZ-R7 specifications
ParameterValue
TypeFanout Buffer (Distribution)
SeriesSiGe
MountingSurface Mount
Supply voltage2.375V ~ 3.63V
Frequency - max7 GHz
Operating temperature-40°C ~ 85°C
InputCML, CMOS, LVDS, LVPECL
OutputECL, LVPECL
PackageTape & Reel (TR); Cut Tape (CT)
Case16-WFQFN Exposed Pad, CSP
Number of circuits1
Ratio - Input:Output1:4
Differential - Input:OutputYes/Yes

Product details

7 GHz fanout buffer — what the 1:4 ratio buys you

The ADCLK944BCPZ-R7 is a 1:4 fanout buffer from Analog Devices' SiGe series, rated for a maximum frequency of 7 GHz. That bandwidth means it can distribute a clean clock edge to four loads without adding jitter that would close the timing margin on a 10+ Gbps serializer or a high-speed ADC.

Multi-protocol input saves a level-shifter

The input accepts CML, CMOS, LVDS, and LVPECL levels. On a mixed-signal board where the clock source might be an LVDS oscillator and the destination is an LVPECL ADC, this buffer handles the translation internally — no external resistor network or AC-coupling cap network needed.

Industrial temp and small package

Frequently asked questions

What is the difference between ADCLK944BCPZ-R7 and ADCLK946BCPZ-REEL7?

The ADCLK946BCPZ-REEL7 is a 1:6 fanout buffer with a maximum frequency of 4.8 GHz, while the ADCLK944BCPZ-R7 is a 1:4 buffer rated to 7 GHz. If you need more fanout and can accept a lower frequency ceiling, the 946 is a drop-in package-compatible alternative; if you need the full 7 GHz bandwidth, stick with the 944.

Can I download the ADCLK944BCPZ-R7 datasheet?

The datasheet is available from Analog Devices' website. Search for 'ADCLK944' on their document portal — the -R7 suffix indicates tape-and-reel packaging, but the electrical and mechanical data are identical across the ADCLK944BCPZ variants.

What input signal types does the ADCLK944BCPZ-R7 accept?

It accepts CML, CMOS, LVDS, and LVPECL. The output is ECL or LVPECL. This input flexibility means you can drive it from almost any standard clock source without external level shifting.