SNOSAG6G September   2005  – October 2015 LMV791 , LMV792

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 2.5-V Electrical Characteristics
    6. 6.6 5-V Electrical Characteristics
    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 Wide Bandwidth at Low Supply Current
      2. 7.3.2 Low Input Referred Noise and Low Input Bias Current
      3. 7.3.3 Low Supply Voltage
      4. 7.3.4 Rail-to-Rail Output and Ground Sensing
      5. 7.3.5 Shutdown Feature
      6. 7.3.6 Small Size
    4. 7.4 Device Functional Modes
      1. 7.4.1 Capacitive Load Tolerance
      2. 7.4.2 Input Capacitance and Feedback Circuit Elements
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Transimpedance Amplifier
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
      2. 8.2.2 Application Curves
      3. 8.2.3 High-Gain, Wideband Transimpedance Amplifier Using the LMV792
      4. 8.2.4 Audio Preamplifier With Bandpass Filtering
      5. 8.2.5 Sensor Interfaces
  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 Related Links
    4. 11.4 Community Resources
    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

    Typical 5-V Supply, Unless Otherwise Noted

  • Input Referred Voltage Noise 5.8 nV/√Hz
  • Input Bias Current 100 fA
  • Unity Gain Bandwidth 17 MHz
  • Supply Current per Channel Enable Mode
    • LMV791 1.15 mA
    • LMV792 1.30 mA
  • Supply Current per Channel in Shutdown Mode 0.02 µA
  • Rail-to-Rail Output Swing
    • At 10-kΩ Load, 25 mV from Rail
    • At 2-kΩ Load, 45 mV from Rail
  • Ensured 2.5-V and 5-V Performance
  • Total Harmonic Distortion 0.01% at1 kHz, 600 Ω
  • Temperature Range −40°C to 125°C

2 Applications

  • Photodiode Amplifiers
  • Active Filters and Buffers
  • Low-Noise Signal Processing
  • Medical Instrumentation
  • Sensor Interface Applications

3 Description

The LMV791 (single) and the LMV792 (dual) low-noise, CMOS input operational amplifiers offer a low input voltage noise density of 5.8 nV/√Hz while consuming only 1.15 mA (LMV791) of quiescent current. The LMV791 and LMV792 are unity gain stable operational amplifiers and have gain bandwidth of 17 MHz. The LMV79x have a supply voltage range of 1.8 V to 5.5 V and can operate from a single supply. The LMV79x each feature a rail-to-rail output stage capable of driving a 600-Ω load and sourcing as much as 60 mA of current.

The LMV79x family provides optimal performance in low-voltage and low-noise systems. A CMOS input stage, with typical input bias currents in the range of a few femtoamperes, and an input common-mode voltage range which includes ground, make the LMV791 and the LMV792 ideal for low-power sensor applications. The LMV79x family has a built-in enable feature which can be used to optimize power dissipation in low power applications.

The LMV791x are manufactured using TI’s advanced VIP50 process and are offered in a 6-pin SOT and a 10-pin VSSOP package respectively.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
LMV791 SOT (6) 2.90 mm × 1.60 mm
LMV792 VSSOP (10) 3.00 mm × 3.00 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Photodiode Transimpedance Amplifier

LMV791 LMV792 20116869.gif

Low-Noise CMOS Input

LMV791 LMV792 20116839.gif