Saturation region in MOSFET with small signal operation

Q.  What does an arrow indicate in the below drawn graph of small signal operation executed by MOSFET?
- Published on 23 Sep 15
Small


a. Active Region
b. Cut-off Region
c. Saturation Region
d. Breakdown Region

ANSWER: Saturation Region

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    Discussion

  • abcd   -Posted on 25 May 16
    transistor can only operate in active region as an amplifier.
  • Satyawati Patil   -Posted on 07 Oct 15
    If the applied input AC signal to an amplifier generates a small signal, then it is known as 'Small signal amplifier',& the corresponding operation is referred as 'Small signal operation'.

    Referring to the DC load line drawn on the output characteristics of MOSFET, the DC load line as well as Q-point act as the functions of gate-to-source voltage (VGS), positive power supply voltage (VDD), drain resistance (RD) and the parameters of MOSFET.

    With respect to the transfer characteristics of ID versus VGS, the Q-point is located in the saturation region especially for the purpose of amplification. This is so because apart from the amplification function of MOSFET, it also operates as a current controlled device. Thus, the drain current becomes linearly proportional to gate-to-source voltage (VGS).

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