24-bit sigma-delta ADC with integrated MUX
The Texas Instruments ADS1254E is a 24-bit sigma-delta ADC with a 4-channel differential input multiplexer, sampling at 20 kSPS. The MUX-ADC architecture means you route one of four differential pairs into a single converter — no need for external analog switches if the scan rate fits the 20 kSPS throughput.
SSOP-20 footprint and supply split
The SPI data interface and external voltage reference give you control over the conversion timing and the full-scale range, respectively. The differential input type means each of the four channels measures the voltage difference between its two pins — common-mode noise on the input lines cancels, which is the whole point of a differential front end in a noisy industrial or sensor environment.