TL03x, TL03xA
ENHANCED-JFET LOW-POWER LOW-OFFSET
OPERATIONAL AMPLIFIERS
SLOS180C – FEBRUARY 1997 – REVISED DECEMBER 2001
42
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
APPLICATION INFORMATION
output characteristics
All operating characteristics (except bandwidth and phase margin) are specified with 100-pF load capacitance.
The TL03x and TL03xA 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 (see Figure 63). Capacitive loads of 1000 pF and larger can be driven if enough resistance is added
in series with the output (see Figure 62).
(a) C
L
= 100 pF, R = 0 (b) C
L
= 300 pF, R = 0 (c) C
L
= 350 pF, R = 0
(d) C
L
= 1000 pF, R = 0 (e) C
L
= 1000 pF, R = 50 Ω (f) C
L
= 1000 pF, R = 2 kΩ
Figure 62. Effect of Capacitive Loads
R
V
O
10 kΩ
(see Note A)
C
L
– 15 V
15 V
–5 V
5 V
–
+
NOTE A: C
L
includes fixture capacitance.
Figure 63. Test Circuit for Output Characteristics
