Marking for NVE Isolators
With Integrated DC-to-DC Convertors
IL761xV / IL781xV line of data couplers with integrated DC-to-DC convertors is
now CE marked under an EU Declaration of Conformity including general safety and
The isolation channels and DC-to-DC convertor are fully isolated with a remarkable
4 kVrms isolation voltage. A unique ceramic/polymer composite isolation barrier
provides the industrys best barrier resistance and virtually unlimited life.
All parts are UL1577 registered and certified under the stringent new VDE 0884-17
IL761xV / IL781xV parts meet the stringent CISPR32 Class B (FCC Class B/ EN 55032:2017/A11:2020)
standards for radiated emissions without any additional external components. Unlike
conventional parts that require ferrite beads, inductors, or large capacitors,
these parts only require a small overlapping stitching capacitance on inner PCB
layers for EMI mitigation. The latest datasheet
and a new application
bulletin have details on how to ensure your designs to pass EMC
testing the first time, every time.
NVEs revolutionary IsoLoop® DC-to-DC convertor module and
patented GMR isolation technology provide best-in-class performance.
Integrated 250 milliwatt DC-to-DC convertors have enough current for plenty of
channels or a variety of external circuitry.
Boost Convertor Models
Versions are available with either 3.3-to-3.3 volt integrated DC-to-DC convertors
(IL761xVE) or 3.3-to-5 volt integrated boost convertors (IL781xVE).
Some DC-to-DC convertors are only semi-regulated, but these parts
supplies have excellent line and load regulation.
One millivolt peak-to-peak ripple on the DC-to-DC convertor outputs is an order
of magnitude less than conventional parts and means low noise and reliable systems.
The couplers are rated at 110 megabits per second for speed, transmission distance,
and signal fidelity.
Creepage is a true eight millimeters in accordance with IEC60601 in a JEDEC-standard
16-pin wide-body package.
A Range of Configurations
Two-, three-, and four-channel versions are available with either 3.3-to-3.3 volt
DC-to-DC convertors or 3.3-to-5 volt boost convertors:
board is available that provides a complete isolated four-channel
SPI node plus isolated power using an IL7817VE.
The four- by three-inch (100 mm by 75 mm) board provides screw terminals for connections,
plus test points for checking voltages and I/O. There are also LEDs to indicate
DC-to-DC convertor input and output power. It uses a 2s2p board with thermal vias
for optimal thermal performance. Download Eval Board Manual »
All IL761xV / IL781xV models are in stock
for immediate delivery.
Most items are in stock and normally ship within one business day.
Of course, if you prefer, we also have worldwide networks of top-notch sensor
Doesnt Have to Be Scary
Many designers dont realize that PROFIBUS standards limit transceiver differential
output voltage, which rules out many transceivers on the market.
A key PROFIBUS specification is, The differential voltage between A- and
B-line shall be a minimum of 4 V and a maximum of 7 V. But most
RS-485 transceivers dont specify bus voltages that way. They specify a maximum
and a minimum differential voltage between A and B, and its almost always
quoted with a single output state under low and high loads. Furthermore, the specification
must be met at the 5.5 V maximum power supply voltage.
Most manufacturers comply with the 4-volt minimum, but miss the less obvious 7-volt
maximum, perhaps in the mistaken belief that maximizing differential output voltage
must be a good thing.
Thats a nasty trick that will get your product rejected.
But NVE has a PROFIBUS treatour IL3685
line of fully PROFIBUS-compliant isolated transceivers. Heres
a proven circuit: