The HI7188 is an easy-to-use 8-Channel sigma-delta programmable A/D subsystem ideal for low frequency physical and electrical measurements in scientific, medical, and industrial applications. The subsystem has complete on-chip capabilities to support moving the intelligence from the system controller and towards the sensors. This gives the designer faster and more flexible configurability without the traditional drawbacks of low throughput per channel, higher power or cost per channel. Extreme design complexity and excessive software overhead is eliminated.