ADC with really "True differential input"

Question

Hi collegues. 
 I need ADC with really differential input and single supply. 
 -IN connected to reference point (REF/2) 
 +IN connected to input signal (+\- 2.5v) 
 I tried AD7684 but DataSheet tells that +IN and -IN MUST be in opposite phase to reference point. I used MCP3301 which is pin2pin compatible with AD7684 but allow any signals on inputs. 
 Now we need 500kS ADC and MCP3301 couldn`t achieve this. 
 Could you advice ADC or solution for AD7693 to adapt it to described use case. 
 Thank you in advance.

EZAdministrator · Accepted Answer

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Type	100 kSPS	200 kSPS to 300 kSPS	400 kSPS to 1000 kSPS	1 MSPS to 5 MSPS
16-Bit Pseudo Differential	AD7651	AD7685	AD7652	AD7653
	AD7660		AD7664	AD7667
	AD7661		AD7981
	AD7680		AD7666	AD7980
	AD7683	AD7694	AD7686	AD7983
	AD7988-1		AD7988-5	AD7985

Type	100 kSPS	200 kSPS to 300 kSPS	400 kSPS to 1000 kSPS	1 MSPS to 5 MSPS
16-Bit Pseudo Differential	AD7651	AD7685	AD7652	AD7653
	AD7660		AD7664	AD7667
	AD7661		AD7981
	AD7680		AD7666	AD7980
	AD7683	AD7694	AD7686	AD7983
	AD7988-1		AD7988-5	AD7985

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ADC with really "True differential input"