ADS1246 interfacing

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hello,
  i've decided upgrade pressure sensor have 24bit adc resolution. chose ads1246 purchased , made fatal design flaw. speced system use +_2.5v when reality sensor outputs 5 volts.

1. can directly interface adc 0-5v input in way?
2. should use levelshifting method bring 0-5v +-2.5v if can suggest tutorial setup?
3. choosing component more suited purpose best solution?

thank you,

mark

last time looked @ pressure sensor datasheet saw accuracies of 1-5%.
arduino's 10-bit a/d more enough this.

the pressure sensor have ratiometric output.
that means pressure sensor supply needs link aref of a/d.
leo..


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