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研究所、轉學考(插大)◆電子學
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110年 - 110 國立中央大學_碩士班招生考試_光電類：電子學#105504
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題組內容
2. For an active filter shown in Figure 2, please answer the following questions:
(d) Draw the Bode plot for the magnitude of the band-pass filter in (c). (5%).
其他申論題
(b) Based on this circuit, please design an op-amp circuit which can convert a 4 -bit digital word to an analog output ranging from 0 to 12 V. Any reasonable scheme is allowed. (5%)
#448420
(a) Determine the transfer function H(s) = Vo/Vs, where s = jω. (5%)
#448421
(b) Show that this active filter is a band-pass filter. (3%)
#448422
(c) For R1= 1 kΩ and C1 = 0.1 μF, find R2and C2 so that the band-pass filter has a resonant frequency at 1600 Hz and unity peak gain. (6%)
#448423
(e) For the band-pass filter in (c), find the gain of the resonance peak. (3%)
#448425
(1) Find R2 and C2 which can increase the peak gain to 10. (8%)
#448426
(a) Please find the reference current (IREF) for the current mirror.
#448427
5% (b) If a load 2 kΩ is connected at the drain, please find and output resistance
#448428
5% (c) If now the load 2 kΩ is connected at the drain with a capacitor C, what is the minimal C to operate this circuit at.You can assume this is the only capacitor seem from this circuit.
#448429
10% (d) if now the load 5kΩ is moved from the drain to the source with a capacitor. What are the ?
#448430
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