Isolator for transmitting logic signals across an isolation barrier
First Claim
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1. A method for transmitting a logic signal across an isolation barrier comprising:
- receiving a logic signal that includes a first transition from a first state to a second state;
transmitting to an isolation barrier a first periodic signal representative of the first transition; and
receiving the first periodic signal from the isolation barrier and using the first periodic signal to provide an output signal indicating the first transition.
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Abstract
A logic isolation circuit has a transmitter circuit for receiving a logic input signal and providing a periodic signal to an isolation barrier, and a receiving circuit for receiving the periodic signal from the isolation barrier and for providing an output signal that indicates the transitions in the logical input signal.
14 Citations
20 Claims
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1. A method for transmitting a logic signal across an isolation barrier comprising:
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receiving a logic signal that includes a first transition from a first state to a second state;
transmitting to an isolation barrier a first periodic signal representative of the first transition; and
receiving the first periodic signal from the isolation barrier and using the first periodic signal to provide an output signal indicating the first transition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15, 16, 17, 18, 19, 20)
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14. A logic isolator circuit comprising:
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an isolation barrier;
a first transmitter circuit receiving a logic signal with a transition from a first state to a second state and providing to the isolation barrier a periodic signal;
a first receiver circuit receiving from the isolation barrier the periodic signal transmitted by the first transmitter circuit and converting the periodic signal to an output signal that the transition indicates.
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Specification