Question
Download Solution PDFAn Op amp has Gain Bandwidth Product of 1 MHz. At what frequency will gain of this Op amp be equal to unity? Identify from the options given below.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
The gain of a typical op-amp is inversely proportional to frequency. An op-amp is characterized by its gain-bandwidth product.
For example, an op-amp with a gain-bandwidth product of 1 MHz would have a gain of 5 at 200 kHz, and a gain of 1 at 1 MHz. This low-pass characteristic is introduced deliberately because it tends to stabilize the circuit by introducing a dominant pole. This is known as frequency compensation.
Calculation:
gain × bandwidth = 1 MHz
At any frequency, the gain bandwidth product will be equal = 1 MHz
gain = 1
∴ Bandwidth = \(\frac{1~MHz}{1}\)
Bandwidth = 1000 kHz
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