The output of the signal generator is not exactly TTL/CMOS compatible.The SQWG may have only one or two outputs, but we often need more test signals such as inverted signals of the output(s).We often have the following issues with SQWGs and other generators: In this two-part series, we'll present many of the circuits we use. But, we often need some signal conditioning between the signal source and DUT (device under test). At my company, we often use square-wave generators (SQWGs) when that's all we need. You can get square waves from function generators and arbitrary-waveform generators, but they can be expensive if all you need is a square wave. If you spend any time on a test bench, you probably use square waves to test components, subsystems, and systems. Editor's note: This article is the first of two parts.
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