Other Parts Discussed in Thread: , ISOW7721
I want to use ISO6721 as a Digital UART Isolator. Currently my hardware is USB Powered & I'm using a 5V to 3.3V LDO (TPS73633) to use 3.3v for MCU and other IC's on PCB.
I'm wondering how to use two different power supplies and connect VCC1 & VCC2 of ISO6721 with different Supplies. Also How do I separate both grounds ?
My MCU logic level is 3.3V . I have a ISO6721DEVM board for evaluation but I'm not sure of isolated power. I'm using a USB-UART Converter CP2102 IC for UART .