National Semiconductor LMC6442 Dual Micropower Rail-to-Rail Output Single Supply Operational Amplifier Data Sheet User Manual
Summary
The LMC6442 is a dual micropower operational amplifier designed specifically for energy-sensitive, battery-powered systems. It provides efficient single-supply power operation and rail-to-rail output capability while maintaining exceptionally low supply current draw (<1 $\mu$A). This manual details the product's comprehensive specifications, suggesting its ideal use in critical applications such as smoke/gas detectors, occupancy sensors, portable instrumentation, and communication monitoring devices that require maximum battery longevity.
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LM ual M icropow er ail-to-R ail O utput ingle upply perational A plifier
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LMC6442 Dual Micropower Rail-to-Rail Output Single Supply Operational Amplifier General Description Key Specifications The LMC6442 is ideal for battery powered systems, where very low supply current (less than one microamp per ampli- Features fier) and Rail-to-Rail output swing is required. It is character-
(Typical, VS 2.2V)
ized for 2.2V to 10V operation, and at 2.2V supply, the LMC6442 is ideal for single (Li-Ion) or two cell (Ni Cad or al- Output Swing to within m V of supply rail kaline) battery systems.
High voltage gain d B
The LMC6442 is designed for battery powered systems that
Gain Bandwidth Product 9.5 KHz
require long service life through low supply current, such as
Guaranteed for: 2.2V, 5V, 10V
smoke and gas detectors, and pager or personal communi-
cations systems. Low Supply Current 0.95 µA/Amplifier
Operation from single supply is enhanced by the wide com- Input Voltage Range −0.3V to V+ -0.9V mon mode input voltage range which includes the ground (or
Power consumption 2.1 µW/Amplifier
negative supply) for ground sensing applications. Very low
Stable for AV ≥+2 or AV −1
(5f A, typical) input bias current and near constant supply cur- rent over supply voltage enhance the LMC6442’s perfor-
mance near the end-of-life battery voltage. Applications Designed for closed loop gains of greater than plus two (or Portable instruments
minus one), the amplifier has typically 9.5 KHz GBWP (Gain Smoke/gas/CO/fire detectors Bandwidth Product). Unity gain can be used with simple Pagers/cell phones compensation circuit, which also allows capacitive loads of
Instrumentation
up to p F to be driven, as described in the Application
Thermostats
Notes section.
Occupancy sensors
For compact assembly the LMC6442 is available in the
Cameras
MSOP pin package, about one half the size required by the
Active badges
SOIC pin package. pin DIP and pin SOIC are also available.
Connection Diagram
DS100064-40
Ordering Information
Temperature Range NSC Supplied
Package Package Marking
Industrial −40˚C to +85˚C Military −55˚C to +125˚C Drawing AS
8-pin SO-8 LMC6442AIM, LMC6442IM M08A Rails
LMC6442AIM
LMC6442IMX M08A LMC6442IMLMC6442AIMX,
and Reel
National Semiconductor Corporation DS100064 www.national.com
Page Summary Contents For National Semiconductor LMC6442 Dual Micropower Rail-to-Rail Output Single Supply Operational Amplifier Data Sheet User Manual
Manual Details
| Brand | National |
|---|---|
| Pages | 15 |
| File Size | 556.26 KB |
| Published | June 15, 2026 |
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Frequently Asked Questions
Is this amplifier suitable for battery-powered systems?
Yes, it is ideal for such applications due to its very low supply current (less than one microamp per amplifier).
What kind of output flexibility does the LMC6442 offer?
It features a Rail-to-Rail output swing, staying within 30 mV of the supply rail voltage.
Which physical package is best for compact circuit design?
For compact assembly, the amplifier is available in an MSOP 8 pin package.