| 摘要 |
A digital logic signal isolator and method utilize a coupling module forming an integrated planar transformer having one common transfer channel. The coupling module has an input electrically coupled to a first coupling point and an output electrically coupled to a second coupling of the coupling module, the input being electrically isolated from the output. The isolator includes a transmitter circuit and a receiver circuit. The transmit circuit drives the input in response to a digital logic signal, such that in response to a first type of digital data value in the digital logic signal, a signal of a first predetermined type is supplied to the input and in response to a second type of digital data value in the digital logic signal, a signal of a second predetermined type is supplied to the input, the signals of the first type and the second type each including an initiation signal that announces a predetermined time window during which another portion of the signals representing a digital data value of the first type or the second type will be valid. The receiver circuit is coupled to the output to receive signals in correspondence to the signals provided to the input, the receiver circuit being adapted to decode a received digital logic signal from the received signals, such that the digital logic signals are transferred from the transmitter circuit to the receiver circuit at isolated and different potentials as serial data at a high transfer rate with a high degree of immunity to interference. |
