SNOS674E November 1997  – April 2015 LMC6482


  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Pin Configuration and Functions
  6. Specifications
    1. 6.1Absolute Maximum Ratings
    2. 6.2ESD Ratings
    3. 6.3Recommended Operating Conditions
    4. 6.4Thermal Information
    5. 6.5Electrical Characteristics for V+ = 5 V
    6. 6.6Electrical Characteristics for V+ = 3 V
    7. 6.7Typical Characteristics
  7. Detailed Description
    1. 7.1Overview
    2. 7.2Functional Block Diagram
    3. 7.3Feature Description
      1. 7.3.1Amplifier Topology
      2. 7.3.2Input Common-Mode Voltage Range
      3. 7.3.3Rail-to-Rail Output
    4. 7.4Device Functional Modes
  8. Application and Implementation
    1. 8.1Application Information
      1. 8.1.1Upgrading Applications
      2. 8.1.2Data Acquisition Systems
      3. 8.1.3Instrumentation Circuits
      4. 8.1.4Spice Macromodel
    2. 8.2Typical Applications
      1. 8.2.13-V Single Supply Buffer Circuit
        1. Requirements
        2. Design Procedure
          1. Load Compensation
            1. Load Tolerance
            2. For Input Capacitance
            3. Voltage Adjustment
        3. Curves
      2. 8.2.2Typical Single-Supply Applications
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1Layout Guidelines
    2. 10.2Layout Example
  11. 11Device and Documentation Support
    1. 11.1Trademarks
    2. 11.2Electrostatic Discharge Caution
    3. 11.3Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Orderable Information

1 Features

  • Typical Unless Otherwise Noted
  • Rail-to-Rail Input Common-Mode Voltage Range (Ensured Over Temperature)
  • Rail-to-Rail Output Swing (Within 20-mV of Supply Rail, 100-kΩ Load)
  • Ensured 3-V, 5-V, and 15-V Performance
  • Excellent CMRR and PSRR: 82 dB
  • Ultralow Input Current: 20 fA
  • High Voltage Gain (R L = 500 k Ω): 130 dB
  • Specified for 2-kΩ and 600-Ω Loads
  • Power-Good Output
  • Available in VSSOP Package

2 Applications

  • Data Acquisition Systems
  • Transducer Amplifiers
  • Hand-held Analytic Instruments
  • Medical Instrumentation
  • Active Filter, Peak Detector, Sample and Hold, pH Meter, Current Source
  • Improved Replacement for TLC272, TLC277

3 Description

The LMC6482 device 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. The device 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 amplifiers such as the TLC272 and TLC277.

Maximum dynamic signal range is assured in low voltage and single supply systems by the rail-to-rail output swing of the LMC6482. The rail-to-rail output swing is ensured for loads down to 600 Ω of the device. Ensured low-voltage characteristics and low-power dissipation make the LMC6482 especially well-suited for battery-operated systems. LMC6482 is also available in a VSSOP package, which is almost half the size of a SOIC-8 device. See the LMC6484 data sheet for a quad CMOS operational amplifier with these same features.

Device Information(1)

LMC6482SOIC (8)4.90 mm × 3.91 mm
VSSOP (8)3.00 mm × 3.00 mm
PDIP (8)9.81 mm × 6.35 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Rail-to-Rail Input

LMC6482 C001_SNOS674.png

Rail-to-Rail Output

LMC6482 C002_SNOS674.png