DIG-ISO
Capacitive digital isolator
Transfers digital information between separately referenced electrical domains through a capacitive isolation structure.
Schematic
Symbols · ISO CMP
Isolated comparator
In plain English
What does Isolated comparator mean?
An isolated comparator evaluates an input condition and transfers its comparison result across an isolation barrier.
A simple example
A higher-voltage measurement domain can provide a threshold result to a separate controller domain.
What the drawings help you do
Show the measured condition and comparison reference on the appropriate side of the isolation barrier, then label the result sent to the controller. A comparator reports a threshold relationship. It should not be drawn as if it continuously reports the full measured analogue value.
- Comparator
- A function that assesses the relationship between an input and a reference.
- Threshold result
- A discrete indication of the specified comparison condition.
Before using this reference
- Identify the monitored input and comparison condition.
- Show the isolation boundary and both reference domains.
- Label the output as a threshold result.
Does the output contain the complete measurement?
A comparator typically reports which side of a defined threshold the input lies on. A continuously sampled measurement requires a different measurement chain, such as the selected ADC arrangement.
Read the source: Isolated signal and control functions
Schematic · ISO CMP
A distinction that matters
A threshold indication is different from a continuously measured analogue value.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
Isolated signal and control functions
Isolated signal and control functions: public technical context for the named function. Product and compliance details remain with the publisher.
About this graphic
This illustration was authored independently by Elora Grid to explain the concept. It is not reproduced from a customer drawing, an official standard graphic or a manufacturer CAD file. Its correspondence to an exact IEC or IEEE symbol identifier has not been certified.
SVG and DXF downloads contain this original artwork. DXF uses unscaled drawing units; a GA envelope supplies no product dimensions, clearances or fabrication information. Original artwork is available under CC BY 4.0. Third-party references retain their own terms.
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