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US 6,262,600 B1Granted
Isolator for transmitting logic signals across an isolation barrier
AssigneeAnalog Devices, Inc.
InventorsGeoffrey T. Haigh, Baoxing Chen
Life of this patent
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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.
Claims20
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.
2 more elements
A logic isolator circuit comprising:
- 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.
Dependencies are inferred from the claim text.