SNOS976M November   2001  – September 2016 LMV981-N , LMV982-N

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Description (continued)
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1  Absolute Maximum Ratings
    2. 7.2  ESD Ratings
    3. 7.3  Recommended Operating Conditions
    4. 7.4  Thermal Information
    5. 7.5  Electrical Characteristics - DC, 1.8 V
    6. 7.6  Electrical Characteristics - AC, 1.8 V
    7. 7.7  Electrical Characteristics - DC, 2.7 V
    8. 7.8  Electrical Characteristics - AC, 2.7 V
    9. 7.9  Electrical Characteristics - DC, 5 V
    10. 7.10 Electrical Characteristics - AC, 5 V
    11. 7.11 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
    4. 8.4 Device Functional Modes
      1. 8.4.1 Input and Output Stage
      2. 8.4.2 Shutdown Mode
      3. 8.4.3 Input Bias Current Consideration
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 High-Side Current-Sensing Application
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
        3. 9.2.1.3 Application Curve
      2. 9.2.2 Half-Wave Rectifier Applications
        1. 9.2.2.1 Design Requirements
        2. 9.2.2.2 Detailed Design Procedure
        3. 9.2.2.3 Application Curves
      3. 9.2.3 Instrumentation Amplifier With Rail-to-Rail Input and Output Application
        1. 9.2.3.1 Design Requirements
        2. 9.2.3.2 Detailed Design Procedure
        3. 9.2.3.3 Application Curve
    3. 9.3 Do's and Don'ts
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 Related Links
    3. 12.3 Receiving Notification of Documentation Updates
    4. 12.4 Community Resources
    5. 12.5 Trademarks
    6. 12.6 Electrostatic Discharge Caution
    7. 12.7 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

1 Features

  • Ensured 1.8-V, 2.7-V, and 5-V Specifications
  • Output Swing:
    • 600-Ω Load: 80-mV from Rail
    • 2-kΩ Load: 30-mV from Rail
  • VCM 200 mV Beyond Rails
  • Supply Current (Per Channel): 100 µA
  • Gain Bandwidth Product: 1.4 MHz
  • Maximum VOS: 4 mV
  • Gain with 600-Ω Load: 101 dB
  • Ultra-Small Package: DSBGA 1.0 mm × 1.5 mm
  • Turnon Time from Shutdown: 19 µs
  • Independent Shutdown on Dual
  • Temperature Range: −40°C to 125°C

2 Applications

  • Industrial and Automotive
  • Consumer Communication
  • Fitness Trackers
  • Wearables
  • Mobile Phones
  • Portable Audio
  • Portable and Battery-Powered Electronic Equipment
  • Supply Current Monitoring
  • Battery Monitoring

3 Description

LMV98x-N are low-voltage, low-power operational amplifiers. LMV98x-N operate from 1.8-V to 5-V supply voltages and have rail-to-rail input and output. LMV98x-N input common mode voltage extends 200mV beyond the supplies which enables user enhanced functionality beyond the supply voltage range. The output can swing rail-to-rail unloaded and within 105 mV from the rail with 600-Ω load at 1.8-V supply. LMV98x-N are optimized to work at 1.8 V, which makes them ideal for portable two-cell battery powered systems and single cell Li-Ion systems.

LMV98x-N offer a shutdown pin that can be used to disable the device and reduce the supply current. The device is in shutdown when the SHDN pin is low. The output is high impedance in shutdown.

LMV98x-N exhibit excellent speed-power ratio, achieving 1.4-MHz gain bandwidth product at 1.8-V supply voltage with low supply current. LMV98x-N are capable of driving a 600-Ω load and up to 1000-pF capacitive load with minimal ringing. LMV98x-N have a high DC gain of 101 dB, making them suitable for low frequency applications.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
LMV981-N DSBGA (6) 1.50 mm × 1.30 mm
SC70 (6) 2.00 mm × 1.25 mm
SOT-23 (6) 2.90 mm × 1.60 mm
LMV982-N VSSOP (10) 3.00 mm × 3.00 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Typical Application

LMV981-N LMV982-N Curr_Sense_Ckt.gif

Simplified Schematic

LMV981-N LMV982-N 200326a9.gif