LT2940
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LT2940

Power and Current Monitor

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LTspice LT2940 - Power Monitor, Control, and Protection Download 2.12 KB
Part Models 8
1ku List Price Starting From $2.48
Features
  • Four-Quadrant Power Measurement
  • ±5% Power Measurement Accuracy
  • 4V to 80V High Side Sense, 100V Max
  • Current Mode Power and Current Outputs
  • Output Bandwidth Exceeds 500kHz
  • ±3% Current Measurement Accuracy
  • 6V to 80V Supply Range, 100V Max
  • Inverting and Noninverting Open-Collector Comparator Outputs
  • Available in 12-Pin DFN (3mm × 3mm) and 12-Lead MSOP Packages
Additional Details
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The LT2940 measures a high side current and a differential voltage, multiplies them and outputs a current proportional to instantaneous power. Bidirectional high side currents and bipolar voltage differences are correctly handled by the four-quadrant multiplier and push-pull output stage, which allows the LT2940 to indicate forward and reverse power flow.

An integrated comparator with inverting and noninverting open-collector outputs makes the LT2940 a complete power level monitor. In addition, an output current proportional to the sensed high side current allows current monitoring. The current mode outputs make scaling, filtering and time integration as simple as selecting external resistors and/or capacitors.

Applications

  • Board Level Power and Current Monitoring
  • Line Card and Server Power Monitoring
  • Power Sense Circuit Breaker
  • Power Control Loops
  • Power/Energy Meters
  • Battery Charger Metering
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file View Data Sheet
Documentation View All Documentation
LTspice LT2940 - Power Monitor, Control, and Protection Download 2.12 KB
Part Models 8
1ku List Price Starting From $2.48
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LT2940

Documentation

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Data Sheet

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UPDATED 11/30/2009
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LT2940: Power and Current Monitor Data Sheet

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UPDATED 06/27/2011
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LT2940: 電力・電流モニタ データシート

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User Guide

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UPDATED 02/22/2010
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Documentation

Product Selector Card 3

LT2940 - True Analog Power and Current Monitoring
Precision High Side Current Sense Amplifiers
Power and Thermal Monitoring

Video

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Video

2017-09-18

LT2940 Video Product Brief

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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LT2940CDD#PBF 12-Lead DFN (3mm x 3mm w/ EP) external-link
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  • Material Declaration external-link
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LT2940CDD#TRPBF 12-Lead DFN (3mm x 3mm w/ EP) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LT2940CMS#PBF 12-Lead MSOP external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LT2940CMS#TRPBF 12-Lead MSOP external-link
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  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT2940IDD#PBF 12-Lead DFN (3mm x 3mm w/ EP) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LT2940IDD#TRPBF 12-Lead DFN (3mm x 3mm w/ EP) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT2940IMS#PBF 12-Lead MSOP external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LT2940IMS#TRPBF 12-Lead MSOP external-link
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  • Material Declaration external-link
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Jun 5, 2024

- 24_0003

Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2)

LT2940CMS#PBF

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Qualification Results Summary

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Feb 4, 2020

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Laser Mark Conversion for 12-Lead MSOP Packages Assembled in ADPG and UTAC

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Oct 11, 2022

- 22_0244

Epoxy Change from Henkel 8290 to 8290A for MSOP Package

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LT2940IMS#TRPBF

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PCN22_0244_Form

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Material_Report

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Qualification Results Summary

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Delta Qualification Matrix

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Apr 18, 2022

- 22_0050

UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages / Devices

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PCN22_0050_Form

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Material_Report

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PCN

Jun 5, 2024

- 24_0003

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Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2)

LT2940CMS#PBF

PRODUCTION

LT2940CMS#TRPBF

PRODUCTION

pdf

PCN24_0003_Form

external-icon

xls

Material_Report

Download

pdf

Qualification Results Summary

external-icon

xlsm

Delta Qualification Matrix

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Feb 4, 2020

- 20_0129

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Laser Mark Conversion for 12-Lead MSOP Packages Assembled in ADPG and UTAC

LT2940CMS#PBF

PRODUCTION

LT2940CMS#TRPBF

PRODUCTION

LT2940IMS#PBF

PRODUCTION

LT2940IMS#TRPBF

PRODUCTION

pdf

PCN20_0129_Form

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xls

Material_Report

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Oct 11, 2022

- 22_0244

arrow down

Epoxy Change from Henkel 8290 to 8290A for MSOP Package

LT2940IMS#PBF

PRODUCTION

LT2940IMS#TRPBF

PRODUCTION

pdf

PCN22_0244_Form

external-icon

xls

Material_Report

Download

pdf

Qualification Results Summary

external-icon

xlsm

Delta Qualification Matrix

Download
Apr 18, 2022

- 22_0050

arrow down

UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages / Devices

LT2940IMS#PBF

PRODUCTION

LT2940IMS#TRPBF

PRODUCTION

pdf

PCN22_0050_Form

external-icon

xls

Material_Report

Download

pdf

Qualification Results Summary

external-icon

xlsm

Delta Qualification Matrix

Download

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Tools & Simulations 1

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

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LT2940 - Power Monitor, Control, and Protection Download

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