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The product of which of the following gives the figure of merit of a logic family?
- a)Gain and bandwidth
- b)Propagation delay time and power dissipation
- c)Fan-out and propagation delay time
- d)Noise margin and power dissipation
Correct answer is option 'B'. Can you explain this answer?
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The product of which of the following gives the figure of merit of a l...
Figure of Merit in Logic Families
The figure of merit (FOM) of a logic family is a crucial parameter that helps in evaluating its performance. It is defined as the product of two key parameters: propagation delay time and power dissipation.
Key Parameters Explained:
- Propagation Delay Time:
This is the time taken for an input signal to affect the output. Lower propagation delay indicates faster operation, which is essential for high-speed circuits.
- Power Dissipation:
This refers to the amount of power consumed by the logic family during operation. Lower power dissipation is desirable for energy-efficient designs and helps in reducing heat generation.
Why Option B is Correct:
- The combination of propagation delay time and power dissipation provides a comprehensive view of a logic family's efficiency.
- A logic family can be fast (low propagation delay) but may consume a lot of power. Conversely, it can be power-efficient but operate slowly.
- Thus, the FOM helps designers strike a balance between speed and power consumption, which is critical in various applications, especially in portable and battery-operated devices.
Other Options Explained:
- Gain and Bandwidth:
These parameters are more relevant to amplifiers rather than logic families.
- Fan-out and Propagation Delay Time:
While fan-out is important, it does not encompass power aspects, making it an incomplete measure.
- Noise Margin and Power Dissipation:
Noise margin is significant for reliability but does not address speed.
In summary, option B accurately encapsulates the essence of evaluating a logic family, making it the correct answer.
The figure of merit (FOM) of a logic family is a crucial parameter that helps in evaluating its performance. It is defined as the product of two key parameters: propagation delay time and power dissipation.
Key Parameters Explained:
- Propagation Delay Time:
This is the time taken for an input signal to affect the output. Lower propagation delay indicates faster operation, which is essential for high-speed circuits.
- Power Dissipation:
This refers to the amount of power consumed by the logic family during operation. Lower power dissipation is desirable for energy-efficient designs and helps in reducing heat generation.
Why Option B is Correct:
- The combination of propagation delay time and power dissipation provides a comprehensive view of a logic family's efficiency.
- A logic family can be fast (low propagation delay) but may consume a lot of power. Conversely, it can be power-efficient but operate slowly.
- Thus, the FOM helps designers strike a balance between speed and power consumption, which is critical in various applications, especially in portable and battery-operated devices.
Other Options Explained:
- Gain and Bandwidth:
These parameters are more relevant to amplifiers rather than logic families.
- Fan-out and Propagation Delay Time:
While fan-out is important, it does not encompass power aspects, making it an incomplete measure.
- Noise Margin and Power Dissipation:
Noise margin is significant for reliability but does not address speed.
In summary, option B accurately encapsulates the essence of evaluating a logic family, making it the correct answer.
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The product of which of the following gives the figure of merit of a logic family?a)Gain and bandwidthb)Propagation delay time and power dissipationc)Fan-out and propagation delay timed)Noise margin and power dissipationCorrect answer is option 'B'. Can you explain this answer?
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