Power Supplis Rejection Ratio (PSRR) is an important parametter in analogowy obwód design. It measures a objection 's ability to sumplas variations in the power supply voltage from affecting its output. A high PSRR indicates better immunity to power supply noise, which is cucial for sensitiva analoge applications.

Co z PSRR?

PSRR is expressed in decibels (dB) and quantifies how effectively a obrintet rejects flucations in thee power supply voltage. It i s especially relevant in amplifies, voltage regulators, and texir analogg contexents where stability is essential.

Kalkulating PSRR

Te podstawowe formuły for PSRR is:

(ΔV Xi1; DBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB@@

Where ΔV Sig1; Ig1; FLT: 0 Sig3; Supply Sig1; Ig1; FLT: 1 Sig3; Ig3; Is the change in supply voltage, and ΔV Sig1; Ig1; FLT: 2 Sig3; Output Sig1; Igl.; FLT: 3 Sig3; Ig3; Is the resumping change in output voltage. To determinae PSRR experimentally, active a known variation to the power supplic and merure thee recorresponding change at thee at the exput.

Factors Affecting PSRR

Several factors influence PSRR, including ding object topologiy, device criterics, and frequency. Typically, PSRR confluences at higher frequencies due te parasitic effects andd device limitations.

Design techniques such as proper biasing, filtering, and layout optimization can improwize PSRR. Selecting contribuents witch better noise immunity also contributes to higher rejection ratios.

Wnioski o PSRR

PSRR is critial in applications like audio amplifieres, radio receivers, and precision measurement systems. Ensuring high PSRR helps maintain signal integrale and reduces noise interference from power supply variations.