LT3960
Recommended for New Designs
The LT3960 is a robust high speed transceiver that extends a single-master I2C bus through harsh or noisy environments at up to 400kbps using the CAN-physical...
Datasheet
LT3960 on Analog.com
ADUM1251
Production
The ADuM1250/ADuM1251Â are hot swappable digital isolators with non-latching, bidirectional communication channels that are compatible with I2C interfaces...
Datasheet
ADUM1251 on Analog.com
Hello,
I would like to use a LT3960 as I2C to CAN transciever, because of a long distance between mCU (master) and sensor (slave) devices.
I would like to have isolated mCU ground from sensors device ground, so I'm planning just to connect CANSDAH, CANSDAL, CANSCLH and CANSCLL lines in between.
Some slave devices will be connected via connector, so communication lines (CANSDAH, CANSDAL, CANSCLH and CANSCLL) would go through the connector. Is it recommended to use a magnetics/transformer in such example (is it better to place magnetics near the slave or master device)?
Is hot-pluging covered/supported or is needed to use for. ex. ADuM1251 in a series with a slave LT3960 which is connected to the master LT3960 via connector?
Basic schematic:
Many thanks,
Kind regards,
Dejan.
Hi Dejan,
The LT3960 can support hot plugging as long as there are 120ohm termination resistors next to the LT3960 master and LT3960 slave 1 as shown below. You don't need termination resistors or I2C isolation for LT3960 slave 2 and 3.
Regards,
Peter Pham
