The input signal to A and B pins at start up goes down to about -20V but ADM3065E seems to clamp it to about -11V as attachment.
1) Does ADM3065E has any clamp function inside?
2) If 1) is yes, the value of the negative clamping voltage is lower…
ADM3065E is 3.0V to 5V working voltage IC ,but receiver Logic output pin not define this max voltage , If IC working voltage is 3.3V is pin max voltage is 3.3V either meet standard EIA-485 Spec. 5V?? have any information to me refer. ??
Please help provide ADM3065E DPI and EFT test result. like AN-1397 figure 5. Thanks a lot~
AN-1397 APPLICATION NOTE
Using the ADM3065E 50 Mbps RS-485 Transceiver in EnDat Motor Control Encoder Applications
Thank you for supporting this case.
For logic voltage=3.3V case, I can use ADM3065E. For logic voltage=5V case, I can use the new ADM3065E.
I have another question. Some products have the following feature.
"Interoperable with 5V logic…
Thank you for providing more detail on your setup.
The 1nF capacitor has the affect of slowing down the rise/fall edges into the optimum region for the ADM3061E, giving correct operation. The ADM3061E is optimized for slew rate limited drivers for operation…
RS-485/RS-422收发器ADM3065E 和 ADM3066E的封装不大，比较节省空间，不错。
We are in the process of updating the ADM3065E/ADM3066E data sheet. The branding will be added on the next revision. I apologize for any inconvenience.
Fail safe biasing is only required at one location on the RS-485 bus.
Many ADI RS-485 transceivers include an integrated RS-485 failsafe circuit, eliminating the need for external fail safe biasing resistors.
For example, the ADM3065E includes open…
As an example, please see page 19 of the ADM3065E data sheet. This provides a definition for hot swap. Hot swap relates to the logic input pins DE and /RE: