Using an average value of 2.9 mA for the I_DSS of the 2N3797 MOSFET of Fig. 6.31, determine the level of V_GS that will result in a maximum drain current of 20 mA if V_P = -5 V.

Fig. 6.31

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2N3797 MOSFET LOW-POWER AUDIO MAXIMUM RATINGS 3 Drain Rating Unit Symbol Vps Value Drain-Source Voltage Vdc Gate 20 2N3797 20 Vas Ip Gate-Source Voltage t10 Vde Drain Current 20 mAdc I Source Total Device Dissipation @ TA = 25°C Deratc above 25°C PD 200 mW 1.14 mW/C Junction Temperature Range T, +175 °C N-CHANNEL - DEPLETION Storage Channel Temperature Range Tug -65 to +200 *C ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise noted) Characteristic Symbol Min Тур Маx Unit