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The signal to be amplified is current signal and the output desired is a voltage signal. Which of the following amplifier can perform this task?
- a)Voltage amplifier
- b)Current amplifier
- c)Transconductance amplifier
- d)Transresistance amplifier
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
The signal to be amplified is current signal and the output desired is...
It is a characteristic of transconductance amplifier.
Most Upvoted Answer
The signal to be amplified is current signal and the output desired is...
Transresistance amplifier
Transresistance amplifier is the correct option for amplifying a current signal and converting it into a voltage signal. This type of amplifier is also known as a transimpedance amplifier.
How it works:
- In a transresistance amplifier, the input current signal is applied to the amplifier's input terminal.
- The amplifier converts this input current into an output voltage signal.
- The output voltage signal is directly proportional to the input current signal, with the proportionality factor being the transresistance of the amplifier.
Advantages:
- Transresistance amplifiers are commonly used in applications where a current signal needs to be converted into a voltage signal.
- They provide high input impedance, low output impedance, and high gain for current-to-voltage signal conversion.
Applications:
- Transresistance amplifiers are widely used in photodetection applications, such as photodiode amplifiers, where the output of a photodiode is a current signal that needs to be converted into a voltage signal for further processing.
- They are also used in sensor interfaces, current-mode signal processing, and other applications where current signals need to be amplified and converted into voltage signals.
In conclusion, a transresistance amplifier is the suitable choice for amplifying a current signal and obtaining a voltage signal as the output.
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