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24 Bit sigma delta ADC selection

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conmanxx

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Hello,

I'm looking for a suitable 24 bit ADC for a project I'm working on

The signal I need to read is a single ended input with a range of +/- 1.25 Volts. Would anyone have a sugestion as to which part I should use( Low cost preferable!)

I tried using an Ltc2440 for the job, it can take a differntial signal of +/- 0.5Vref, but its common mode signal is limited to "the IN+ and IN– input pins
extending from GND – 0.3V to VCC + 0.3V" this is where I'm getting stuck.

One way around this is to level shift up my signal so it reads from 2.5V to 0 .
I'd prefer not to have to do this as I need to keep my part count down.

Thanks in advance for any help given
 

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