That would be difficult because the usual 10MHz signal generator output most likely cannot provide sufficient power(more than a few mA) to drive the external loading.I just want to setup a test in which I will need a known amount of sine wave riding on DC power supply (lets say 20mVp-p 10MHz sine riding on 5V DC). I do have such sine wave generator and DC power source. How I can put them together to get the "noised" DC supply at output?
tnx
You could damage the signal generator by injecting current across its output.1) In my case the load takes aproximately 0.5 A, but if it was only a few mA, why should I need the transformer? Why just not a signal generator output in series with the output of the power supply?
The load is a chip containing SerDes having its own PLL, what I want to do is to characterize PLL's capability to tolerate noise on the chip's power supply. For this purpose I need to inject a known amount of sine noise to the power supply of the chip. That's it.Ataleph, just curious but what are you up to? What is your load?
A power supply, i.e. a voltage source, has a source impedance approaching zero, and would therefore be a short to the signal source.A small capacitor should let you inject the signal.
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