ADS7951: c6742 DSP schematic diagram interface ADS7951 ADC

Hi Stan,

We don't have that specific schematic to share.  Please review the ADS7953EVM Users Guide found here: https://www.ti.com/lit/ug/sbau408/sbau408.pdf

The TMS320C6742 has an SPI port that you would use to communicate with the ADS7951 via the SCLK, SDI, SDO and /CS pins.

Hi Tom nice to meet you again, i  m using external VREF, which required external voltage supply of VREFP 3.5v and VREFM 1.5v respectively, your schematic recommended REF5025, i read your data sheet SBOS410K page3 says output avaiable only at 2.5v, 3v and 4.5v.  Could you advise how to obtain 3.5v and 1.5v ???

Hi Stan,

With the ADS7951, the normal use case is to tie REFM to GROUND with REFP being fixed at 2.5V.  Why are you looking at 1.5V on REFM?  What is the nature of your analog input?

Hi Tom, ok i get you for ADS7953, REFM - 0v and REFP - 2.5v. 

i m also designing another parallel ADC THS10064, you data sheet says VREFP - 3.5v and VREFM - 1.5v, how to obtain these 2 voltage? Please advise....

voltage divider rule?