Global Sources
EE Times-India
Stay in touch with EE Times India
EE Times-India > Amplifiers/Converters

C8051F35X delta-sigma ADC user's guide

Posted: 05 Aug 2008     Print Version  Bookmark and Share

Keywords:delta-sigma  analogue-to-digital converters  oversampling  noise shaping 

Delta-sigma analogue-to-digital converters (ADCs) are oversampling ADCs: to reduce noise and analogue 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.

Delta-sigma ADCs also add benefit by shaping noise and digitally filtering the information to enhance performance. The oversampling, noise shaping, and digital filtering allow highly linear, high-resolution signal measurements, and reduce the cost and complexity of circuits that must filter the signal at the input of the ADC.

Delta-sigma ADCs oversample a signal and produce relatively low output data rates and are best used in applications requiring high precision measurements (16 to 24 bits) of low-bandwidth signals (i.e., typically 20kHz or less). Example applications include digital phones, temperature measurements, pressure measurements, and weigh-scales.

View the PDF document for more information.

Comment on "C8051F35X delta-sigma ADC user's gui..."
*  You can enter [0] more charecters.
*Verify code:


Visit Asia Webinars to learn about the latest in technology and get practical design tips.


Go to top             Connect on Facebook      Follow us on Twitter      Follow us on Orkut

Back to Top