Page 127 - Op Amps Design, Applications, and Troubleshooting
P. 127
110 AMPLIFIERS
The resulting circuit for our noninverting AC-coupled amplifier is shown in Fig-
ure 2.28, The actual performance of the circuit is reflected in the oscilloscope
waveforms shown in Figure 2.29. The design goals are compared to the measured
performance in Table 2.6.
FIGURE 2.28 A noninverting AC-
coupled amplifier design.
TABLE 2.6
Parameter Design Goal Measured Values
Midpoint voltage gain 12 11.9
Frequency range 500 Hz- 15 kHz 475 Hz-79.5 kHz
FIGURE 2.29 Oscilloscope displays showing the actual performance of the AC-coupled amplifier
shown in Figure 2.28. (Test equipment courtesy of Hewlett-Packard Company.)
