The good news is that reference designs are available that make the design of such sampling systems manageable, even without a strong RF or FPGA design background. ![]() ![]() This article will explore various aspects of such designs, touching on input signal conditioning, clock generation, signal routing and data capture, and in doing so will answer the above questions. Typical questions system designers might ask themselves are Do I have adequate RF knowledge? Do I need to become familiar with smith chart theory again and get the charts out of the bottom drawer? What kinds of amplifiers exist with GHz bandwidth and low distortion over that entire bandwidth? How will I generate a clock signal for a GSPS converter? How can I possibility capture and process data at gigabits per second? Is my lab adequately equipped to use and evaluate such technology? This is truly a mixed signal environment in which all the sub circuits have to be considered carefully to allow the analog to digital converter (ADC) to deliver the optimum dynamic performance. ![]() Working with GHz analog signals is often referred to as a 'black art', so even experienced circuit designers are often hesitant when presented with such a challenge. Ultra high-speed data conversion offers many challenges to the system designer.
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