A certain instrumentation system for a new hybrid car needs a bandpass filter to limit its output bandwidth prior to digitization. The filter must meet the following specifications:

TMAX ¼ þ20 1 dB vCH ¼ 5:5 krad=s ð875:4HzÞ 10%

vCL ¼ 5 krad=s ð795:8HzÞ 10%

TMIN

20 dB vCHMIN ¼ 55 krad=s ð8:754 kHzÞ

vCLMIN ¼ 500 rad=s ð79:6HzÞ

Two vendors have submitted proposed solutions in the form of OrCAD graphics, shown in Figure P14–54. As the requirements engineer on the project, you need to select the best one. You must check whether each circuit meets or fails every specification. You should also consider (1) parts count, (2) ease of maintainability and implementation (fewer parts, number of similar parts, adjustments of potentiometers, standard values), (3) frequency-domain response, and (4) cost. You should address each item for each design at least qualitatively. Attach whatever software output you think will support your decision.

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C2 38.14n R2 Vendor #1 Band-Aide Inc $75.00 w 100 k R1 C1 R3 U1 WH www R4 250 38.14n 22 k 1 Vac OUT 1.2 k 0 Vdc V4 OPAMP