Page 851 - The Mechatronics Handbook

0066_frame_C27 Page 12 Wednesday, January 9, 2002 7:10 PM

FIGURE 27.12 Sallen-Key low-pass filter.

dc gain M r ´ dc gain
10 0
Magnitude
10 -1

10 0 10 1 10 2
0
-30
Phase (deg) -60 n
-90
-120
-150
-180
10 0 10 1 10 2
Frequency (rad/s)

FIGURE 27.13 Frequency response of the Sallen-Key filter from experimental data.

Input
5 4
Amplitude (Volts) 3 2

0 1
0 1 2 3 4 5 6 7 8 9 10
Output
5 4
Amplitude (Volts) 3 2

0 1
0 1 2 3 4 5 6 7 8 9 10
Time (s)
FIGURE 27.14 Sweep sine response of the Sallen-Key filter.

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