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How to get the common-mode rejection ratio?

How to get the common-mode rejection ratio?

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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How to get the common-mode rejection ratio?
%3D The output of a real differential amplifier is better described as: once Nicm - Nicm- Zen Then the common-mode rejection ratio (CMRR) will be: So Ho w de we desind V. = Aa (V4 – V-)+ Acm (V+ + V_) Nod Av Nichr Ad CMRR = |A cm we will Adis Eenke the defren Expressing in decibels, | Ad 20 log |A cm Che of them between thiem CMRR (dB) : CMRR= (2g„Rss)/ (ARp/ Rp). Common-Mode Rejection Ratio (CMRR): A measure of the effectiveness of the differential amplifier in amplifying differential-mode signals and rejecting common- mode interference; is the ratio of the magnitude of its differential gain |A,\ to the magnitude of its common-mode gain |Aem| . 8. Dr. Mohammed Majid al Khalidy
Transcribed Image Text:%3D The output of a real differential amplifier is better described as: once Nicm - Nicm- Zen Then the common-mode rejection ratio (CMRR) will be: So Ho w de we desind V. = Aa (V4 – V-)+ Acm (V+ + V_) Nod Av Nichr Ad CMRR = |A cm we will Adis Eenke the defren Expressing in decibels, | Ad 20 log |A cm Che of them between thiem CMRR (dB) : CMRR= (2g„Rss)/ (ARp/ Rp). Common-Mode Rejection Ratio (CMRR): A measure of the effectiveness of the differential amplifier in amplifying differential-mode signals and rejecting common- mode interference; is the ratio of the magnitude of its differential gain |A,\ to the magnitude of its common-mode gain |Aem| . 8. Dr. Mohammed Majid al Khalidy
Sidde loy Voc Rp Rp 2 The value of i can be easily determined by replacing each of Q,and Q, with its T model and, for simplicity, neglecting ro, Vol O Im Ve i g2 Vjcm gm V jcm 1 usolve for JoO +Vicm 1/gm + 2 Rss gm gm Beceuse the have xhe saup Vicm -Rpi %3D V ol = V02 Rp 21 pramle Vol = V02 1/gm + 2R$S 2 Rss Rp 2 Rss Rp2 V 02 Naw te= Vol V jcm Vicm (c) me we dulto need to apry it fow the seeavel beceuse thee Vod = V02-ol hoth wewril 2Rs SA Biased at /2 if (d) will' be 7e wo
Transcribed Image Text:Sidde loy Voc Rp Rp 2 The value of i can be easily determined by replacing each of Q,and Q, with its T model and, for simplicity, neglecting ro, Vol O Im Ve i g2 Vjcm gm V jcm 1 usolve for JoO +Vicm 1/gm + 2 Rss gm gm Beceuse the have xhe saup Vicm -Rpi %3D V ol = V02 Rp 21 pramle Vol = V02 1/gm + 2R$S 2 Rss Rp 2 Rss Rp2 V 02 Naw te= Vol V jcm Vicm (c) me we dulto need to apry it fow the seeavel beceuse thee Vod = V02-ol hoth wewril 2Rs SA Biased at /2 if (d) will' be 7e wo
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