1. INTRODUCTION
The CS556x/7x/8x devices represent a new generation of delta-sigma analog-to-digital converters that compete
with SAR (successive approximation register) converters, with some distinct advantages. The unique features of
these over-sampling converters allow them to be multiplexed at high speed across many input channels, because
every conversion produces a fully settled result. In this application note the similarities and differences between
SAR converters and the CS556x/7x/8x family of ADCs will be discussed as well as some design tips on choosing
the right multiplexer and input amplifiers to drive these ADCs.