SM73302_15 Datasheet, PDF (18/31 Pages) Texas Instruments – SM73302 88 MHz, Precision, Low Noise, 1.8V CMOS Input, Decompensated Operational Amplifier

SM73302
SNOSB93A – AUGUST 2011 – REVISED APRIL 2013
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Figure 50. C Increased to 2.2 nF, Gain = −1
Some over-compensation appears to be needed for the desired overshoot characteristics. Instead of intersecting
the A_VOL curve at 18 dB, 2 dB of over-compensation will be used, and the A_VOL curve will be intersected at 20
dB. Using Equation 8 for 20 dB, or 10 V/V, the closest standard value of R_C is 240Ω. The following two
waveforms show the new resistor value with C = 390 pF and 2.2 nF. Figure 52 shows the final compensation and
a very good response for the 1 MHz square wave.
Figure 51. R_C = 240Ω and C = 390 pF, Gain = −1
Figure 52. R_C = 240Ω and C = 2.2 nF, Gain = −1
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