Transresistance amplifier output

Q.  Which among the following is an output provided by transresistance amplifier?
- Published on 23 Sep 15

a. Output current proportional to signal voltage
b. Output voltage proportional to signal current
c. Output voltage proportional to input voltage
d. Output current proportional to signal current

ANSWER: Output voltage proportional to signal current

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    Discussion

  • Satyawati   -Posted on 30 Sep 15
    An amplifier which produces the output voltage in proportion to the signal current where the proportionality factor is independent of source and load resistances, is known as 'Transresistance amplifier'.

    For a practical transresistance amplifier, input resistance must be very less than source resistance and the output resistance must be very less than load resistance.

    Generally, it is the ratio of voltage to signal current. Conversely, the transconductance amplifier exhibits output current proportional to signal voltage.

    Voltage amplifier exhibits the output voltage proportional to input voltage & current amplifier exhibits the output current proportional to the signal current.

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