September 2003
LMC6482
CMOS Dual Rail-To-Rail Input and Output Operational
Amplifier
General Description
Features
The LMC6482 provides a common-mode range that extends
to both supply rails. This rail-to-rail performance combined
with excellent accuracy, due to a high CMRR, makes it
unique among rail-to-rail input amplifiers.
(Typical unless otherwise noted)
n Rail-to-Rail Input Common-Mode Voltage Range
(Guaranteed Over Temperature)
n Rail-to-Rail Output Swing (within 20mV of supply rail,
100kΩ load)
n Guaranteed 3V, 5V and 15V Performance
n Excellent CMRR and PSRR: 82dB
n Ultra Low Input Current: 20fA
It is ideal for systems, such as data acquisition, that require
a large input signal range. The LMC6482 is also an excellent
upgrade for circuits using limited common-mode range am-
plifiers such as the TLC272 and TLC277.
Maximum dynamic signal range is assured in low voltage
and single supply systems by the LMC6482’s rail-to-rail out-
put swing. The LMC6482’s rail-to-rail output swing is guar-
anteed for loads down to 600Ω.
n High Voltage Gain (RL = 500kΩ): 130dB
n Specified for 2kΩ and 600Ω loads
n Available in MSOP Package
Guaranteed low voltage characteristics and low power dis-
sipation make the LMC6482 especially well-suited for
battery-operated systems.
Applications
n Data Acquisition Systems
n Transducer Amplifiers
n Hand-held Analytic Instruments
n Medical Instrumentation
n Active Filter, Peak Detector, Sample and Hold, pH
Meter, Current Source
LMC6482 is also available in MSOP package which is al-
most half the size of a SO-8 device.
See the LMC6484 data sheet for a Quad CMOS operational
amplifier with these same features.
n Improved Replacement for TLC272, TLC277
3V Single Supply Buffer Circuit
Rail-To-Rail Input
Rail-To-Rail Output
01171303
01171301
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Connection Diagram
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© 2004 National Semiconductor Corporation
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