Abstract: An interface comprises a converter configured to track process characteristics across an isolation barrier and modify amplitude of a fast differential edge modulation as a function of speed of an active device on a transmitting side of the isolation barrier, and a differentiator configured to differentiate the fast differential edge modulation on a receiving side of the isolation barrier whereby differentiation bandwidth tracks slope rate of the differential edge modulation.

Abstract: A network device comprises an Ethernet physical layer (PHY) comprising an isolation, protection, and electromagnetic interference suppression barrier operative for isolated power and data transfer.

Abstract: A signal isolator comprises an isolation barrier, a transmitter, a differentiator, and a recovery circuit. The transmitter is coupled to a first side of the isolation barrier and is configured to receive and convert an information signal to a differential signal that encodes information in the information signal in a single transition edge. The differentiator is coupled to a second side that is isolated from the first side of the isolation harrier and differentiates the differential signal. The recovery circuit is coupled to the differentiator and operates to recover an output information signal based on the information in the single transition edge.

Abstract: A method for transferring power and information across an isolation barrier comprises transferring power across a power transfer isolation barrier between a primary circuit and a secondary circuit while maintaining isolation between the primary and secondary circuits, and transferring data between the powered system and the isolated system across a communication isolation barrier that is distinct from the power transfer isolation barrier.

Abstract: An active clamp device electrically couples first and second nodes in respective first and second supply domains referenced to ground potentials that can be different. The active clamp device comprises first and second active devices controlled by signals respectively referenced to the first and second supply domains that create a short-circuit or low impedance connection between the first and second nodes in normal operation and drive impedance between the first and second nodes high in response to a transient event.

Abstract: A network interface apparatus is disclosed that includes a connector coupled to a plurality of communication lines. A Physical Layer (PHY) device coupled to the communication lines and to a first ground level. A transient event suppression module coupled between the communication lines and a low impedance path to earth ground. During a transient event the transient event suppression module provides a low impedance path to the earth ground to protect the PHY device from the transient event. A power circuit that delivers power from a second ground level to the PHY device is coupled to the first ground level. The first ground level and the second ground level are coupled to provide a low impedance path during normal operation and high impedance during transient events.

Abstract: A signal processing circuit includes a main input sampling structure with an integrator operational amplifier and input lines including a switched capacitor. The input lines have switched connections to input signal lines and reference signal lines. A replica sampling structure is used in combination with the main input sampling structure to eliminate or reduce signal-dependent current that is drawn from the input signal line and the reference signal line. The replica sampler includes buffered input lines and switched capacitor of the input sampling structure but the capacitors have switched connections to the reference signal lines such that the connections have opposite polarity to the connections of the reference signal line to the input sampling structure. The replica sampler eliminates or reduces signal-dependent current from the reference signal lines. Buffering of the input lines in the replica sampler eliminates or reduces the signal-dependent current drawn from the input signal lines.