# Microelectronic Circuit Design

• Notes
• 41

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CHAPTER 13 13.1 Assuming linear operation : v BE = 0.700 + 0.005sin2000 π t V v ce = 5 mV 8 mV 1.65 V ( ) sin2000 π t = 1.03sin2000 π t V v CE = 5.00 1.03sin2000 π t V ; 10 - 3300 I C 0.700 I C 2.82 mA 13.2 Assuming linear region operation : v GS = 3.50 + 0.25sin2000 π t V v ds = 0.25 V 0.50 V 2 V ( ) sin2000 π t = 1.00sin2000 π t V v DS = 4.80 1.00sin2000 π t V v DS v GS V TN 10 3300 I D 1.00sin2000 π t 3.50 + 0.25sin2000 π t 1 For sin2000 π t = 1, I D 10 1 3.5 0.25 + 1 3300 V = 1.89 mA 13.3 (a) C 1 is a coupling capacitor that couples the ac component of v I into the amplifier. C 2 is a coupling capacitor that couples the ac component of the signal at the collector to the output v O . C 3 is a bypass capacitor. (b) The signal voltage at the top of resistor R 4 will be zero. 13.4 (a) C 1 is a bypass capacitor. C 2 is a coupling capacitor that couples the ac component of v I into the amplifier. C 3 is a coupling capacitor that couples the ac component of the signal at the collector to output v O . (b) The signal voltage at the base will be v b = 0. 13.5 (a) C 1 is a coupling capacitor that couples the ac component of v I into the amplifier. C 2 is a bypass capacitor. C 3 is a coupling capacitor that couples the ac component of the signal at the collector to output v O . (b) The signal voltage at the emitter will be v e = 0. 13.6 (a) C 1 is a coupling capacitor that couples the ac component of v I into the amplifier. C 2 is a bypass capacitor. C 3 is a coupling capacitor that couples the ac component of the signal at the drain to output v O . (b) The signal voltage at the source will be v s = 0. 13.7 13-1

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(a) C 1 is a coupling capacitor that couples the ac component of v I into the amplifier. C 2 is a coupling capacitor that couples the ac component of the signal at the drain to output v O . 13.8 (a) C 1 is a coupling capacitor that couples the ac component of v I into the amplifier. C 2 is a bypass capacitor. C 3 is a coupling capacitor that couples the ac component of the signal at the drain to output v O . (b) The signal voltage at the source will be v s = 0. 13.9 (a) C 1 is a coupling capacitor that couples the ac component of v I into the amplifier. C 2 is a bypass capacitor. C 3 is a coupling capacitor that couples the ac component of the signal at the collector to output v O . (b) The signal voltage at the emitter will be v e = 0. 13.10 (a) C 1 is a coupling capacitor that couples the ac component of v I into the amplifier. C 2 is a coupling capacitor that couples the signal from the emitter of Q 1 back to the node joining R 1 and R 2 . C 3 is a coupling capacitor that couples the ac component of the signal at the emitter to the output v O . (b) The signal voltage at the collector will be zero. 13.11 (a) C 1 is a coupling capacitor that couples the ac component of v I into the amplifier. C 2 is a bypass capacitor. C 3 is a coupling capacitor that couples the ac component of the signal at the drain to the output v O . (b) The signal voltage at the top of R 4 will be zero.
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• Spring '08
• BRAUN
• Orders of magnitude, RO, Electronic amplifier, Grid bias, Biasing, IC power supply pin