TL087 Datasheet, PDF (18/20 Pages) Texas Instruments – JFET-INPUT OPERATIONAL AMPLIFIERS

TL087, TL088, TL287, TL288
JFET-INPUT OPERATIONAL AMPLIFIERS
SLOS082A – D2484, MARCH 1979 – REVISED JANUARY 1993
TYPICAL APPLICATION DATA
output characteristics
All operating characteristics are specified with 100-pF load capacitance. These amplifiers will drive higher
capacitive loads; however, as the load capacitance increases, the resulting response pole occurs at lower
frequencies, thereby causing ringing, peaking, or even oscillation. The value of the load capacitance at which
oscillation occurs varies with production lots. If an application appears to be sensitive to oscillation due to load
capacitance, adding a small resistance in series with the load should alleviate the problem. Capacitive loads
of 1000 pF and larger may be driven if enough resistance is added in series with the output (see Figure 43).
(a) CL = 100 pF, R = 0
(b) CL = 300 pF, R = 0
(c) CL = 350 pF, R = 0
(d) CL = 1000 pF, R = 0
(e) CL = 1000 pF, R = 50 Ω
Figure 43. Effect of Capacitive Loads
(f) CL = 1000 pF, R = 2 kΩ
5V
–5 V
15 V
R
– 15 V
CL
(see Note A)
VO
2 kΩ
NOTE A: CL includes fixture capacitance
Figure 44. Test Circuit for Output Characteristics
18
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265