16.6A CMOS inverter utilizes VDD = 5 V, Vtn = |Vtp| = 1 V, and μnCox = 2μpCox = 50 µA/V2. Find (W/L)n and (W/L)p so that VM = 2.5 V and so that for vI = VDD, the inverter ...
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15.46 Design the circuit in Fig. 15.24(a) to obtain symmetrical triangular and square waveforms of 10-kHz frequency. Use the circuit in Fig. 15.22(a) to implement the bistable. Assume that the op amps saturate at ±5 V. The triangular waveform is ...
15.45 Design the circuit in Fig. 15.23(b) to obtain a square waveform of 10-kHz frequency. Use C = 1 nF and R1 = R2. Specify the values of the three resistors.
15.44 Find the frequency of oscillation of the circuit in Fig. 15.23(b) for the case R1 = 10 kΩ, R2 = 15 kΩ, C = 1 nF, and R = 62 kΩ. 9.518 kHz
15.43 Consider a bistable circuit having a noninverting transfer characteristic with L+ = −L− = 5 V, VTL = −1 V, and VTH = +1 V. (a)For a 0.5-V-amplitude sine-wave input having zero average, what is the output? (b)Describe the output if ...
15.42 Consider the circuit of Fig. P15.41 with R1 eliminated and R2 short-circuited. Sketch and label the transfer characteristic vO−vI. Assume that the diodes have a constant 0.7-V drop when conducting and that the op amp saturates at ±5V.
15.41 For the circuit in Fig. P15.41, sketch and label the transfer characteristic vO−vI. The diodes are assumed to have a constant 0.7-V drop when conducting, and the op amp saturates at ±5 V. What is the maximum diode current?
15.40 Consider the bistable circuit of Fig. 15.22(a) with the op amp’s negative-input terminal disconnected from ground and connected to a reference voltage VR. (a)Derive expressions for the threshold voltages VTL and VTH in terms of the op amp’s saturation levels ...
15.39 For the circuit in Fig. 15.22(a), let L+ = −L− = 5 V and R1 = 10 kΩ. Find R2 that results in threshold voltages of +1 V and −1 V.
15.38 Consider the bistable circuit of Fig. 15.21(a) with the op amp’s positive input terminal connected to a positive-voltage source V through a resistor R3. (a)Derive expressions for the threshold voltages VTL and VTH in terms of the op amp’s saturation ...