-Regarding AD7175-8 input range

Hello,

 I have a query regarding the input voltage range of AD7175-8. In my first design, I have used AD7739 now I have to replace that with 16 channel ADC, so I choose AD7175-8.

in AD7739 IC it mentions the input range +625 mV, ±625 mV, +1.25 V, ±1.25 V, +2.5 V, ±2.5 V. That means I will get 100 percent output on this voatge. but not found in AD7175-8. 

Please guide.

Thanks