SLOS447I September   2004  – May 2016 LMV341 , LMV342 , LMV344

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics: V+ = 2.7 V
    6. 6.6 Electrical Characteristics: V+ = 5 V
    7. 6.7 Shutdown Characteristics: V+ = 2.7 V
    8. 6.8 Shutdown Characteristics: V+ = 5 V
    9. 6.9 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 PMOS Input Stage
      2. 7.3.2 CMOS Output Stage
      3. 7.3.3 Shutdown
    4. 7.4 Device Functional Modes
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curve
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Examples
  11. 11Device and Documentation Support
    1. 11.1 Related Links
    2. 11.2 Community Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

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発注情報

7 Detailed Description

7.1 Overview

The LMV34x devices are precision operational amplifiers with CMOS inputs for very low input bias current. Output is rail-to-rail and input common-mode includes ground. LMV341 has a shutdown mode for very low supply current.

7.2 Functional Block Diagram

LMV341 LMV342 LMV344 BLOCK2.gif

7.3 Feature Description

7.3.1 PMOS Input Stage

PMOS Input Stage supports a lower input range that includes ground. Upper range limit is V+ – 1 V.

7.3.2 CMOS Output Stage

The CMOS drain output topology allows rail-to-rail output swing.

7.3.3 Shutdown

LMV341 includes a shutdown pin. During shutdown, ICC is nearly zero and the output becomes high impedance. The typical turnon time coming out of shutdown is 5 µs.

7.4 Device Functional Modes

The LMV34x devices have two modes of operation:

  • Normal operation when SHDN pin is at V+ level or the SHDN pin is not present
  • Shutdown mode when SHDN is at GND level; ICC is very low and output is high impedance.