Hi,
In the document "ads58b18.pdf" (SBAS487D - NOVEMBER 2009-REVISED JANUARY 2011):
In the section "ABSOLUTE MAXIMUM RATINGS" on page 2 it says:
"Voltage applied to input pin / INP, INT / MAX / minimum (1.9, AVDD + 0.3)V"
With AVDD = 1.8V, the maximum voltage applied to the input pin equals 1.9V ?
The "ANALOG INPUT" section on page 44 says:
"For a full-scale differential input, each input pin (INP, INM) must swing symmetrically
between VCM + 0.375V and VCM – 0.375V"
With VCM = 1.7V - the voltage applied to the input in the range of 1.325-2.075V.
This does not correspond to the information from "ABSOLUTE MAXIMUM RATINGS".
Help me understand where I'm wrong.
Thank you,
Alpatov Sergey.