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ISO3080: Check the RC filter values of ISO3080

Part Number: ISO3080

Hi Team,

Please check the RC filter values of ISO3080.

Customer used the RC value on their schematic as below and they want to change the RC value for RS485 baudrate 19200bps.

Baudrate is 19200bps. so, fs = 9.6Khz.  RC is about 3.3 ==> R = 33 ohm, C= 100nF.

it is based on below calculation formula

RC = 0.032/fS 

it is from application note :(Isolated  RS-485 Transceiver Reference Design (Rev. A) (ti.com)

Please advice.

ISO30380_SDI

Best regards

Joey Kim