TLC271_01 Datasheet, PDF (61/82 Pages) Texas Instruments – LinCMOSE PROGRAMMABLE LOW-POWER OPERATIONAL AMPLIFIERS

TLC271, TLC271A, TLC271B
LinCMOS PROGRAMMABLE LOW-POWER
OPERATIONAL AMPLIFIERS
SLOS090D – NOVEMBER 1987 – REVISED MARCH 2001
APPLICATION INFORMATION
output characteristics (continued)
All operating characteristics of the TLC271 were measured using a 20-pF load. The devices drive higher
capacitive loads; however, as output load capacitance increases, the resulting response pole occurs at lower
frequencies, thereby causing ringing, peaking, or even oscillation (see Figures 110, 111, and 112). In many
cases, adding some compensation in the form of a series resistor in the feedback loop alleviates the problem.
(a) CL = 20 pF, RL = NO LOAD
(b) CL = 130 pF, RL = NO LOAD
(c) CL = 150 pF, RL = NO LOAD
Figure 110. Effect of Capacitive Loads in High-Bias Mode
(a) CL = 20 pF, RL = NO LOAD
(b) CL = 170 pF, RL = NO LOAD
(c) CL = 190 pF, RL = NO LOAD
Figure 111. Effect of Capacitive Loads in Medium-Bias Mode
(a) CL = 20 pF, RL = NO LOAD
(b) CL = 260 pF, RL = NO LOAD
(c) CL = 310 pF, RL = NO LOAD
Figure 112. Effect of Capacitive Loads in Low-Bias Mode
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