7.5 GHz buffer for clock distribution
The ADCLK905BCPZ-R7 is a single-channel clock buffer from Analog Devices' SiGe series, rated for a maximum frequency of 7.5 GHz. That bandwidth covers the fastest serial data converters, FPGA reference clocks, and RF sampling ADCs — the part doesn't limit the clock tree before the signal reaches the load. It accepts a differential clock input and delivers a differential output in ECL, NECL, or PECL logic levels, selectable via the supply voltage. The 1:1 fanout keeps the signal path simple — one clean copy of the input, no added skew from a splitter.
Supply and temperature range
The part operates from a single 2.375V to 3.63V supply, so it can run directly off a 2.5V or 3.3V rail without an extra LDO.
Package and layout notes
Housed in a 16-lead LFCSP with exposed pad measuring 3x3 mm. The exposed paddle must be soldered to a ground plane for thermal and electrical performance — at 7.5 GHz, a floating paddle adds inductance that degrades signal integrity.