Patent ID: 9680528
Date: 2017-06-13
CPC Classifications: H04B,H04L

Claim:
1. An apparatus for full-duplex communication of data signals between capacitive-isolated devices via three signal paths of a plurality of signal paths that provide capacitive isolation between the devices, comprising: a first transmitter circuit configured and arranged to transmit a first single-ended data signal over a first signal path of the three signal paths; and a first receiver circuit including a second transmitter circuit configured and arranged to transmit the second single-ended signal over the second signal path; and a second receiver circuit including a second differential amplifier having a third input coupled to receive the first single-ended signal via the first signal path and having a fourth input coupled to the third signal path, and being configured and arranged to output a fourth single-ended signal indicative of a voltage difference between the third and fourth inputs; and common mode suppression circuitry configured and arranged to remove a common mode voltage from the inputs of at least one of the differential amplifiers.