Frequency dithering enhances high-performance ADCs


Posted on Apr 2, 2012

Since the late 1970s, designers have successfully improved the effective resolution and spurious performance of A/D converters by adding ditheruncorrelated noiseto a converter`s input and then using DSP techniques to average out noise from the converted data. The most common dithering method adds random-amplitude noise to an A/D converter`s input signal. Although this method works, the added noise includes large random peak values. To keep the A/D converter`s input out of the saturation region, a designer must know both the peak signal and the peak dither levels.






Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Oscilloscope-preamplifier
Transistor Checker Circuit
2x60 Watt Stereo Audio Amplifier LM4780
KC2ZPLs Web Design and Electronic Home
What do I need for a basic RF circuit



Top