Isoloop reveals magnetic isolator range
A Rhopoint Components product story
Edited by the Electronicstalk editorial team Oct 3, 2008
Isoloop has unveiled the IL500 series of magnetic isolators whose power consumption is independent of the mark space ratio and solely dependent on frequency.
This makes for lower power consumption than opto isolators, whose power consumption is heavily dependent on on-state and frequency.
Isoloop digital magnetic isolators work by differentiating the incoming pulse and using the resultant edge to power a coil which creates a magnetic field for a short period of time.
This pulse then changes the state of a 1-bit magnetic memory which then is buffered to provide the output.
The isolation is achieved between the coil and the 1-bit non-volatile magnetic memory.
The non-volatile nature of the magnetic memory is used to lead to an undefined state at startup.
The IL500 series has a controllable refresh clock to ensure I/O synchronisation within 9 microseconds, while some devices in the series use an external synchronisation clock input.
All IL500 series isolator channels operate at 2Mb/s over the full temperature and supply voltage ranges.
Maximum propagation delay is 25 nanoseconds and pulse-width distortion is 10 nanoseconds.
All models feature very low EMC emissions.
The series is available in 1, 2, 3, and 4-channel models; the 1 and 2-channel models are available in either SOIC packages or eight-pin MSOPs.
The three- and four-channel models are available in 16-pin SOIC packages.
The isolators operate over a supply-voltage range of 3 to 5.5V and temperature range of -40 to +85C.
Typical transient immunity is 30kV/microsecond.
The parts are UL 1577-approved, and IEC 61010-2001 approval is pending.
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