Our design was initially using the AD7731 ADC (in 16bit mode). The design has been updated and no longer requires multiple differential channels.
We now only require 1 differential channel.
Any recommendations for a low noise ADC replacement?
Something around 20sps or faster
We are using the AD7731 in differential mode
(+/- 1.28V bipolar, Buffered inputs, +2.5v ref on - differential input, 5v DC, 5v DC AREF+ and GND for AREF-, CHOP enabled, SKIP Disabled, FAST Disabled.)
Hope that is enough information.