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Using a DAC to control a 0-500MHz signal's DC offset

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irata

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I am working with a signal condition circuit. there is a need for using a DAC to control a 0-500MHz signal's DC offset.

for example a sine signal is S=A+B*sin(wt), use a DAC make an C v voltage to control the output signal is S=A-C+B*sin(wt).

Anybody have an reference circuit or some suggest.

Thanks very much.
 

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