HO11_214W09_Noise_part1_2pp

HO11_214W09_Noise_part1_2pp - Handout#11 EE 214 Winter 2009...

Info icon This preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
Handout #11 EE 214 Winter 2009 Electronic Noise Part I B. Murmann and B. A. Wooley Stanford University Types of Noise "Man made noise” or interference noise Signal coupling Substrate coupling Finite power supply rejection – Solutions Fully differential circuits Layout techniques "Electronic noise" or "device noise" (focus of this handout) Electronic noise or device noise (focus of this handout) – Fundamental E.g. "thermal noise" caused by random motion of carriers – Technology related Technology related "Flicker noise" caused by material defects and "roughness" B. A. Wooley, B. Murmann EE214 Winter 2008-09 2
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Significance of Electronic Noise (1) Signal-to-Noise Ratio 2 2 signal signal i P V SNR P V = noise noise B. A. Wooley, B. Murmann EE214 Winter 2008-09 3 Significance of Electronic Noise (2) Th "fid lit " f l t i t i ft d t i d b th i SNR The "fidelity" of electronic systems is often determined by their SNR – Examples Audio systems Imagers cameras Imagers, cameras Wireless and wireline transceivers Electronic noise directly trades with power dissipation and speed Noise has become increasingly important in modern technologies with reduced supply voltages SNR ~ V signal 2 /V noise 2 ~ ( α V DD ) 2 /V noise 2 Topics How to model noise of circuit components How to calculate/simulate the noise performance of a complete circuit In which circuits and applications does thermal noise matter? B. A. Wooley, B. Murmann EE214 Winter 2008-09 4
Image of page 2