USB based isolated power & serial link
Sometimes I need to send ADC results to the PC for further analysis but also I don't want to inject noise to my measurement system from PC ground. Isolated serial link is perfect for this. Also I used a very low noise LDO LT1763 which can be used to supply power to host circuit. Lastly, 1V65 supply can be used as a virtual ground in single supply opamp based circuits.
Most of the design ideas for this board are coming from Dave L. Jone's uSupply board.
I haven't sent this board to fab yet ...
- Schematic & Layout in PNG format
- Schematic & Layout in EagleCAD format
- Dave L. Jone's uSupply schematic: http://eevblog.com/files/uSupplyUSBrevB.pdf
This project is published under the terms of the GNU General Public License, version 3 licence.