Didier Juges wrote: > I am using the LTC1535 in an application right now, and if you need RS-485, > it is pretty neat. It includes the hardware to drive a small transformer > that will provide you with an isolated 5V floating supply too. > > However, I am MUCH more impressed with the Analog Devices ADuM5241ARZ which > not only has two isolated digital channels, but also the power transformer > is built-in, and the whole device fits in an SO-8 package. You can get 5V at > 10mA out of it. Analog calls this series "Digital Isolators" > > This is absolutely truly amazing. I am using one in one of my products right > now. The Analog Device part is not RS-485 compatible, it is just a digital > isolator (TTL in, TTL out), but with the built-in 5V power supply, you can > drive any RS-485 driver. For RS-485, you will need the 4 port version of the > chip (for the Tx Enable) > > The app note says it runs at 300 MHz. I have not checked the device with the > spectrum analyzer yet, but with a 100 MHz scope, I can't see anything. > > They now have special versions for I2C and even a new one that provides > isolated gate drive to power MOSFETs. > > Both devices are specified to sustain 2500VAC for one minute (UL > requirement). > > Didier KO4BB > Didier
Any idea of the jitter of the Analog Devices transformer coupled isolators? Bruce _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
