I'm having an issue with an ADM2483 not doing full 'swings' on the RxD line....
I have two ADM2483 side by side, one with an isolated bus power supply of 5V, and one with an non-isolated power supply of 5V. The non-isolated module…
About PV pin of ADM2483
Has internal pull-up resistors to the PV pin?
If pull-up resistance are incorporated, the number of value ?
Let me tell your advice.
About PV pin of ADM2483,
Does user should do something for unused PV pin? or can leave NC?
Datasheet does not say any recommendation for unused PV pin. So I suppose that PV pin can leave NC(open).
I found that ADM2483 has a PV input pin and ADM809 is recommended to drive this pin. If I want to use this function, can I tie it to microcontroller to temporary isolate TXD/RXD pins from RS-485 traffic?
I use one ADM2483 chip with 1W isolated power (BS0505S-1W).Now I want to use five ADM2483 chips on one PCB,so should I how to choose the isolated power value ?
Does ADM2483 is tolerant until a noise of what V?
Are the NC pins on the ADM2483 internally connected?
More specifically, to maintain compatibility with an existing layout is it acceptable to connect pin 10 (NC) with pin 9 (GND2)? Will this affect isolation or transient ratings?