Question about ADC Product

Hi,

I'm looking for a ADC IC covering the following spec.

- Single-end 2ch input, 16bit, More than 50Hz ODR, I2C interface, Lead frame package like SOT, MSOP and TSSOP.

But I can not find a suitable solution then I consider to use 1ch ADC x 2 parallel instead.

Do you have any solutions covering my spec?  I have checked LTC2451 but its address is fixed and I2C can not discern 2 x LTC2451.

Regards,

Kazu