公开(公告)号：US20180323746A1

公开(公告)日：2018-11-08

申请号：US16023277

申请日：2018-06-29

申请人： TEXAS INSTRUMENTS INCORPORATED

发明人： Anant Shankar Kamath ,  Sreeran N. S.

IPC分类号： H03D3/00 ,  H04L25/02

CPC分类号： H03D3/00 ,  H04L25/0268

摘要： Several circuits and methods for transferring an input data signal in a digital isolator are disclosed. In an embodiment, the digital isolator includes an isolation element, input circuit, and output circuit. The isolation element includes at least one input node and at least one output node, the input circuit is electronically coupled to the input node and generates modulated differential data signals based on modulating the input data signal on a carrier signal. The input circuit operates using a first supply voltage with respect to a first ground. The output circuit is electronically coupled to the output node to receive the modulated differential data signals, operates using a second supply voltage with respect to a second ground and includes a frequency-shift keying demodulator configured to generate a demodulated data signal in response to detection of presence of the carrier signal. The output circuit further generates an output data signal.