Several circuits and methods for field-based communication are provided. In an embodiment, a field-based communication circuit (200) includes a receiver circuit (202), a detection circuit (204) and a control circuit (206). The receiver circuit is configured to receive a field input signal from a field source (208). The detection circuit includes a voltage detection circuit (210) and a current detection circuit (212) configured to detect a voltage signal and a current signal respectively associated with the field input signal. The control circuit is configured to trigger a selection of one of the voltage detection circuit and the current detection circuit based on a detection of a signal magnitude of one of the voltage signal and the current signal relative to at least a first predetermined threshold level, wherein the selection of one of the voltage detection circuit and the current detection circuit facilitates a demodulation at a demodulation circuit (222) of one of the voltage signal and the current signal.