Question
Download Solution PDFएक आदर्श OP-Amp के उभयनिष्ठ मोड वाला अस्वीकृति अनुपात (CMRR)______________है।
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCMRR (उभयनिष्ठ मोड वाला अस्वीकृति अनुपात) को विभेदक-मोड वाले वोल्टेज लाभ (Ad) और उभयनिष्ठ-मोड वाले वोल्टेज लाभ (Ac) के अनुपात के रूप में परिभाषित किया जाता है।
गणितीय रूप से, इसे निम्न रूप में व्यक्त किया गया है:
Ad = विभेदक लाभ
Ac = उभयनिष्ठ मोड लाभ
आदर्श रूप से Op--Amp के उभयनिष्ठ-मोड लाभ शून्य होना चाहिए, अर्थात् इसे इन्वेर्टिंग और गैर-इन्वेर्टिंग टर्मिनल दोनों पर सामान्य इनपुट के लिए शून्य आउटपुट प्रदान करना चाहिए। ∴ एक आदर्श Op-Amp का CMRR अनंत होता है।
op-amp की आदर्श विशेषताएं:
|
विशेष मानदंड |
आदर्श मान |
वास्तविक मान |
|
वोल्टेज लाभ (Av) |
∞ |
≈ 106 |
|
इनपुट प्रतिरोध (Ri) |
∞ |
≈ 1 MΩ |
|
आउटपुट प्रतिरोध (R0) |
0 |
≈ 10 Ω से 100 Ω |
|
बैंडविड्थ (B.W) |
∞ |
≈ 1 MHz |
|
उभयनिष्ठ मोड अस्वीकृति अनुपात (CMRR) |
∞ |
≈ 106 या 120 dB |
|
मोड़ दर (S.R) |
∞ |
≈ 80 V/μs |
Last updated on Jul 5, 2025
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