lmc6462bimx National Semiconductor Corporation, lmc6462bimx Datasheet - Page 15

• Manufacturer Part Number: lmc6462bimx
• Description: Micropower, Rail-to-rail Input And Output Cmos Operational Amplifier
• Manufacturer: National Semiconductor Corporation

Application Information
Typical Single-Supply Applications
TRANSDUCER INTERFACE CIRCUITS
Photocells can be used in portable light measuring instru-
ments. The LMC6462, which can be operated off a battery, is
an excellent choice for this circuit because of its very low
input current and offset voltage.
LMC6462 AS A COMPARATOR
Figure 17 shows the application of the LMC6462 as a com-
parator. The hysteresis is determined by the ratio of the two
resistors. The LMC6462 can thus be used as a micropower
comparator, in applications where the quiescent current is an
important parameter.
FIGURE 17. Comparator with Hysteresis
FIGURE 16. Photo Detector Circuit
FIGURE 15. Low-Power Two-Op-Amp Instrumentation Amplifier
(Continued)
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HALF-WAVE AND FULL-WAVE RECTIFIERS
In Figure 18 Figure 19, R
since excess current can be caused by the input voltage
exceeding the supply voltage.
FIGURE 18. Half-Wave Rectifier with
with Input Current Protection (R
FIGURE 19. Full-Wave Rectifier
Input Current Protection (R
I
limits current into the amplifier
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)
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