AD7134: What are the differences between AD7134 and AD4134?

Firstly, We recommend using AD4134 which is the upgraded industrial temperature grade version(-40 to 105 Deg C) of AD7134 with the similar performance and fully compatible with AD7134's hardware and software. AD7134 is no longer recommended for new designs

AD4134 is the First industrial AC +DC Precision Continuous Time Sigma Delta-ADC. This continuous time sampling architecture offers excellent attenuation of out of band high frequencies providing 102 dB inherent Alias rejection.