Datasheet

LM62
www.ti.com SNIS105E –JUNE 1999–REVISED MARCH 2013
Capacitive Loads
The LM62 handles capacitive loading well. Without any special precautions, the LM62 can drive any capacitive
load as shown in Figure 13. Over the specified temperature range the LM62 has a maximum output impedance
of 4.7 kΩ. In an extremely noisy environment it may be necessary to add some filtering to minimize noise pickup.
It is recommended that 0.1 μF be added from +V
S
to GND to bypass the power supply voltage, as shown in
Figure 14. In a noisy environment it may be necessary to add a capacitor from the output to ground. A 1 μF
output capacitor with the 4.7 kΩ maximum output impedance will form a 34 Hz lowpass filter. Since the thermal
time constant of the LM62 is much slower than the 30 ms time constant formed by the RC, the overall response
time of the LM62 will not be significantly affected. For much larger capacitors this additional time lag will increase
the overall response time of the LM62.
Figure 13. LM62 No Decoupling Required for Capacitive Load
Figure 14. LM62 with Filter for Noisy Environment
Figure 15. Simplified Schematic
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