AD7928 input range and Vdrive

Question

Hello 
 
 I would like to use AD7927 at VDD=5V, Vdrive=3.3V and input range =0~2*REFin. 
 Can I use AD7928 at this condition ? 
 
 The datasheet rev.E P.3 says below about 0~2*REFin input range. 
 "RANGE bit set to 0, AVDD/VDRIVE = 4.75 V to 5.25 V" 
 P.15 says below. 
 "For 0 V to 2 &times; REFIN, AVDD = 4.75 V to 5.25 V." 
 
 I think that 0~2*VREFin does not need that both AVDD and VDRIVE is the same. 
 
 Please let me know your advice. 
 
 Regards, 
 Teli

Lluis · Accepted Answer

Hi Teli, 
 In page 3, the specifications are gathered with AVDD=Vdrive. So, both were the same level. However, they can be independent. 
 As per page 15, only AVDD needs to be 5V when using the extended range, up to 2*REFIN. 
 Regards, 
 Lluis.)

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AD7928 input range and Vdrive