Abstract: AD2S1210, Vdrive, Dvdd design and interface query.
Question:
Attachment a schematic with AD2S1210 and the characteristic of resolver. it is possible to check and review my schematics. I am powered the VDRIVE in +3.3V and VDD in +5V
Answers:
Abstract: AD2S1210, Vdrive and Dvdd design and interface query.
The Vdrive is the supply for the interface logic (e.g. 3.3v), while the Vdd (5v) is the internal working power of the internal logic inside the the IC. The Vdrive are TTL logic which your FPGA should be able to accept and or produce these ViL and ViH see ADS1210 rev. B, table 1, page 5 . I had a look at your schematic and your FPGA, just make sure your FPGA i.e. the bank power to these pins, i.e. the interface to the ADS1210 are either 3.3v or 5V TTL logic. Not CMOS
I wrote a 2 part article on this, which should help and address this query. see link below.
Multirail Power Supply Design for Successful Application Boards—Part 1: Strategy | Analog Devices
Multirail Power Supply Design for Successful Application Boards—Part 2: Layout Tips and Tricks | Analog Devices