lm715ch National Semiconductor Corporation, lm715ch Datasheet - Page 6
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lm715ch
Manufacturer Part Number
lm715ch
Description
High Speed Operational Amplifier
Manufacturer
National Semiconductor Corporation
Datasheet
1.LM715CH.pdf
(8 pages)
Applications Information
Note For gain 10 compensation may be simplified by removing C2 C3 and
adding a 200 pF capacitor (C4) between Lead 7 and 10
Layout Instructions
Layout The layout should be such that stray capacitance
is minimal
Supplies The supplies should be adequately bypassed
Used of 0 1 mF high quality ceramic capacitors is recom-
mended
Note All lead numbers on this page apply to metal package
Closed Loop
1000
100
10 (Note)
1
Suggested Values of Compensation Capacitors vs
Gain
Frequency Compensation Circuit
Non-Inverting Compensation
Closed Loop Voltage Gain
Components Values
100 pF
500 pF
10 pF
50 pF
C1
2000 pF
500 pF
C2
TL H 10059 – 9
TL H 10059 – 10
1000 pF
1000 pF
250 pF
C3
6
Ringing Excessive ringing (long acquisition time) may oc-
cur with large capacitive loads This may be reduced by
isolating the capacitive load with a resistance of 100X
Large source resistances may also give rise to the same
problem and this may be decreased by the addition of a
capacitance across the feedback resistance A value of
around 50 pF for unity gain configuration and around 3 0 pF
for gain 10 should be adequate
Latch Up This may occur when the amplifier is used as a
voltage follower The inclusion of a diode between leads 6
and 2 with the cathode toward lead 2 is the recommended
preventive measure
Typical Applications
High Speed Integrator
TL H 10059 – 14
TL H 10059 – 13