SNOSAW3D September   2007  – August 2016 LMV641

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 DC Electrical Characteristics: 2.7 V
    6. 6.6 DC Electrical Characteristics: 10 V
    7. 6.7 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 Low-Voltage and Low-Power Operation
      2. 7.3.2 Wide Bandwidth
      3. 7.3.3 Low Input Referred Noise
      4. 7.3.4 Ground Sensing and Rail-to-Rail Output
      5. 7.3.5 Small Size
    4. 7.4 Device Functional Modes
      1. 7.4.1 Stability of Op Amp Circuits
        1. 7.4.1.1 In The Loop Compensation
        2. 7.4.1.2 Compensation by External Resistor
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 High-Gain, Low-Power Inverting Amplifiers
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curve
      2. 8.2.2 Anisotropic Magnetoresistive Sensor
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
          1. 8.2.2.2.1 Gain Error and Bandwidth Consideration if Using an Analog to Digital Converter
      3. 8.2.3 Voiceband Filter
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Development Support
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Receiving Notification of Documentation Updates
    4. 11.4 Community Resource
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • Specified for 2.7-V, and ±5-V Performance
  • Low Power Supply Current: 138 µA
  • High Unity Gain Bandwidth: 10 MHz
  • Max Input Offset Voltage: 500 µV
  • CMRR: 120 dB
  • PSRR: 105 dB
  • Input Referred Voltage Noise: 14 nV/√Hz
  • 1/f Corner Frequency: 4 Hz
  • Output Swing With 2-kΩ Load 40 mV from Rail
  • Total Harmonic Distortion: 0.002% at 1 kHz, 2 kΩ
  • Temperature Range −40°C to 125°C

2 Applications

  • Portable Equipment
  • Battery-Powered Systems
  • Sensors and Instrumentation

3 Description

The LMV641 is a low-power, wide-bandwidth operational amplifier with an extended power supply voltage range of 2.7 V to 12 V.

The device features 10 MHz of gain bandwidth product with unity gain stability on a typical supply current of 138 µA. Other key specifications are a PSRR of 105 dB, CMRR of 120 dB, VOS of 500 µV, input referred voltage noise of 14 nV/√Hz, and a THD of 0.002%. This amplifier has a rail-to-rail output stage and a common mode input voltage, which includes the negative supply.

The LMV641 device operates over a temperature range of −40°C to +125°C and is offered in the board-space-saving 5-Pin SC70, SOT-23, and 8-Pin SOIC packages.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
LMV641 SOIC (8) 4.90 mm × 3.91 mm
SOT-23 (5) 2.90 mm × 1.60 mm
SC70 (5) 2.00 mm × 1.25 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Offset Voltage Distribution

LMV641 20203319.gif

Open Loop Gain and Phase vs Frequency

LMV641 20203326.gif