This library can be used for:
LTC2493: 2/4 channel 24bit ADC
LTC2499: 8/16 channel 24bit ADC
This library contains the ADC part of the combined library Ard2499 which contains the libraries for the LTC2499 24bit ADC and the 24AA025E48 EEPROM
See the 16-Channel 24-Bit ADC Data Acquisition Shield for Arduino from Iowa Scaled Engineering: https://www.iascaled.com/store/ARD-LTC2499