Differences Between Passive and Active ADC Front-Ends

What are the tradeoffs between passive (transformer) and active (amplifier) ADC front-ends?

  • There are many tradeoffs between the two. The differences can be summarized in the chart provided below.

    Also see attached reference for more information.

    List of critical system parameters and which performs best….

    Parameter                          Usual Preference

    Bandwidth                            Transformer

    Gain                                    Amplifier

    Passband flatness                Amplifier

    Power requirement                Transformer

    Noise                                   Transformer

    DC vs. AC coupling               Amplifier (dc level preservation)

                                               Transformer (dc isolation)

  • This question has been closed by the EZ team and is assumed answered.