I’m planning to use both ADM2484 and ADM2487 on my RS485 expansion module (and eventually to the baseboard). I need an easy way to generate the second isolated supply for the second transceiver. Do you, or Analog Devices, have a recommendation for this…
Hello,
I have a question about the D1/D2 of ADM2487E.
I am using ADM2487E with the same circuit as Figure34 in the datasheet.
In my circuit, When VDD1 reaches about 1.4V, D1/D2 and GND are short-circuited.
And, the overcurrent flows to the transformer…
Dear Sir/Madam, We will use ADM2487E Isolated RS-485 Transceivers.
If not use osc-circuit,please teach us how to take care of D1/D2 unused pins.
Leave its floating? or... It would be greatly appreciated if advice could be gotten. Best Regards,Kou
Hi Kazu,
We don't have hot swap characterized for these devices.
Table 11 and 12 in the ADM2482E/ADM2487E data sheet provide a truth table for outputs based on input steady states.
http://www.analog.com/media/en/technical-documentation/data-sheets…
产品组合
• 单通道和多通道数据隔离器
• 集成隔离电源的数字隔离器：isoPower
• USB隔离器
• 隔离式栅极驱动器
• 开关稳压器
• I2C数字隔离器*
• 隔离式CAN收发器
• 隔离式RS-485收发器
• 隔离式RS-232收发器
• 隔离式Σ-Δ调制器
Yes, we do have RS-485 transceivers with integrated power isolation as well as signal isolation. The following parts all have isolated power using isoPower chip-scale micro-transformer technology: