lm6313 National Semiconductor Corporation, lm6313 Datasheet - Page 9

• Manufacturer Part Number: lm6313
• Description: High Power Operational Amplifier
• Manufacturer: National Semiconductor Corporation

Figure 6 is a minimum component count example of a video
Application Hints
LASER DIODE MODULATOR
modulator for a CW laser diode This example biases the
diode at 200 mA and modulates the current at
volt of signal If it is desired to reduce power consumption
and
change R2 to 5 kX and R4 to 15X
In photo 1 C
250 V ms from
from
450 mA into the load and remain stable
g
a
5V supplies are available all that is necessary is to
5V to
L
b
b
5V This requires the op amp to deliver
is 1000 pF The LM6313 is slewing at
5V to
FIGURE 6
a
Photo 1
5V The slew rate is 450 V ms
(Continued)
g
TL H 10521 – 13
TL H 10521 – 16
200 mA per
9
Figure 7 is the circuit used to demonstrate the ability of the
CAPACITIVE LOAD DRIVING
LM6313 to drive capacitive loads at speeds not previously
possible with monolithic op amps
In photo 2 C
the op amp is forced into current limiting Here the current is
internally limited to about
complete recovery to normal operation at the end of slew-
ing
L
is changed to 1 mF Under these conditions
FIGURE 7
Photo 2
g
400 mA Note the rapid and
TL H 10521 – 14
TL H 10521 – 15