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AN217
C8051F35 X D E L TA -S I G M A ADC U S E R ’ S G U I D E
Relevant Devices
This application note applies to the following devices: C8051F350, C8051F351, C8051F352, C8051F353
1. Introduction
Delta-sigma analog-to-digital converters (ADCs) are oversampling ADCs: to reduce noise and analog front-end circuit cost and complexity, they sample signals at very high rates and produce a low-noise, high-resolution output. Oversampling at a “high” rate means sampling a signal at a frequency that is well above the bandwidth of interest’s Nyquist rate and is done to lower in-band noise. The output word rate of the ADC will be close to the bandwidth of interest.
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Delta-sigma ADCs also add benefit by shaping noise and digitally filtering the information to enhance performance.
AN217 Datasheet
