LT6105
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LT6105

Precision, Rail-to-Rail Input Current Sense Amplifier

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LTspice LT6105 - Specialty Amplifiers Download 1.14 KB LTspice LT6105 Demo Circuit - Unidirectional Current Sense Amplifier for Negative Supplies Download 2.00KB LTspice LT6105 Demo Circuit - Current Sense Monitor for +15V & -15V Supplies (0A to 2A) Download 3.00KB LTspice LT6105 Demo Circuit - Unidirectional Current Sense Amplifier for a 1V Supply (0A to 10A) Download 2.00KB
Part Models 12
1ku List Price Starting From $1.22
Features
  • Very Wide, Over-the-Top®, Input Common Mode Range
      - Extends 44V Above V – (Independent of V +)
      - Extends –0.3V Below V –
  • Wide Power Supply Range: 2.85V to 36V
  • Input Offset Voltage: 300µV Maximum
  • Gain Accuracy: 1% Max
  • Gain Configurable with External Resistors
  • Operating Current: 150µA
  • Slew Rate: 2V/µs
  • Sense Input Current When Powered Down: 1nA
  • Full-Scale Output Current: 1mA Minimum
  • Operating Temperature Range –40°C to 125°C
  • Available in 2mm × 3mm DFN and 8-Lead MSOP Packages
Additional Details
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The LT6105 is a micropower, precision current sense amplifier with a very wide input common mode range. The LT6105 monitors unidirectional current via the voltage across an external sense resistor. The input common mode range extends from –0.3V to 44V, with respect to the negative supply voltage (V –). This allows the LT6105 to operate as a high side current sense monitor or a low side current sense monitor. It also allows the LT6105 to monitor current on a negative supply voltage, as well as continuously monitor a battery from full charge to depletion. The inputs of LT6105 can withstand differential voltages up to ±44V, which makes it ideal for monitoring a fuse or MOSFET switch.

Gain is configured with external resistors from 1V/V to 100V/V. The input common mode rejection and power supply rejection are in excess of 100dB and the input offset voltage is less than 300µV. A minimum slew rate of 2V/µs ensures fast response to unexpected current changes.

The LT6105 can operate from an independent power supply of 2.85V to 36V and draws only 150µA. When V + is powered down, the sense pins are biased off. This prevents loading of the monitored circuit, irrespective of the sense voltage. The LT6105 is available in a 6-lead DFN and 8-lead MSOP package.

Applications
  • High Side or Low Side Current Sensing
  • Current Monitoring on Positive or Negative Supply Voltages
  • Battery Monitoring
  • Fuse/MOSFET Monitoring
  • Automotive
  • Power Management
  • Portable Test/Measurement Systems
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file View Data Sheet
Documentation View All Documentation
LTspice LT6105 - Specialty Amplifiers Download 1.14 KB LTspice LT6105 Demo Circuit - Unidirectional Current Sense Amplifier for Negative Supplies Download 2.00KB LTspice LT6105 Demo Circuit - Current Sense Monitor for +15V & -15V Supplies (0A to 2A) Download 3.00KB LTspice LT6105 Demo Circuit - Unidirectional Current Sense Amplifier for a 1V Supply (0A to 10A) Download 2.00KB
Part Models 12
1ku List Price Starting From $1.22
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LT6105

Documentation

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Data Sheet

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UPDATED 04/15/2008
English

LT6105: Precision, Rail-to-Rail Input Current Sense Amplifier Data Sheet

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UPDATED 03/12/2008
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LT6105: 入力範囲が拡張された高精度の電流センス･アンプ データシート

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Design Note

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UPDATED 09/11/2008
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DN451 - Current Sense Amp Inputs Work from –0.3V to 44V Independent of Supply redirect icon

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UPDATED 03/11/2009
Chinese
DN451 - 电流检测放大器输入的工作范围从 - 0.3V 至 44V 而不受电源的影响 redirect icon

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UPDATED 12/16/2014
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DN451 - 電源には関係なく－0.3V～44Vで動作する電流検出アンプの入力 redirect icon

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UPDATED 10/01/2008
English
Design Note 451: Current Sense Amp Inputs Work from –0.3V to 44V Independent of Supply redirect icon

User Guide

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UPDATED 09/24/2009
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DC1192A - Demo Manual redirect icon

398.00K

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Reliability Data

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UPDATED 03/26/2018
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R417 Reliability Data redirect icon

31.47 K

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Technical Articles

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UPDATED 03/01/2008
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Versatile Current Sense Amplifiers Offer Rail-to-Rail Input, 150°C Operating Temperature redirect icon

Application Note

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UPDATED 12/01/2005
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AN-105: Current Sense Circuit Collection Making Sense of Current redirect icon

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UPDATED 12/01/2005
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AN-105: 電流センス（検出）回路集 電流に対するセンスを養う redirect icon

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Documentation

Technical Documents 7
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Data Sheet 1

LT6105: Precision, Rail-to-Rail Input Current Sense Amplifier Data Sheet

Reliability Data 1

R417 Reliability Data

User Guide 1

DC1192A - Demo Manual

Application Note 1

AN-105: Current Sense Circuit Collection Making Sense of Current

Design Note 2

DN451 - Current Sense Amp Inputs Work from –0.3V to 44V Independent of Supply
Design Note 451: Current Sense Amp Inputs Work from –0.3V to 44V Independent of Supply

Technical Articles 1

Versatile Current Sense Amplifiers Offer Rail-to-Rail Input, 150°C Operating Temperature

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
LT6105CDCB#TRMPBF 6-Lead DFN (2mm x 3mm w/ EP) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LT6105CDCB#TRPBF 6-Lead DFN (2mm x 3mm w/ EP) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LT6105CMS8#PBF 8-Lead MSOP external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LT6105CMS8#TRPBF 8-Lead MSOP external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LT6105HDCB#TRMPBF 6-Lead DFN (2mm x 3mm w/ EP) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LT6105HDCB#TRPBF 6-Lead DFN (2mm x 3mm w/ EP) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LT6105HMS8#PBF 8-Lead MSOP external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LT6105HMS8#TRPBF 8-Lead MSOP external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LT6105IDCB#TRMPBF 6-Lead DFN (2mm x 3mm w/ EP) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LT6105IDCB#TRPBF 6-Lead DFN (2mm x 3mm w/ EP) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LT6105IMS8#PBF 8-Lead MSOP external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LT6105IMS8#TRPBF 8-Lead MSOP external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link

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Oct 11, 2022

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Epoxy Change from Henkel 8290 to 8290A for MSOP Package

LT6105CMS8#PBF

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Qualification Results Summary

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Feb 3, 2020

- 20_0128

Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC

LT6105CMS8#PBF

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LT6105CMS8#TRPBF

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LT6105HMS8#PBF

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PCN20_0128_Form

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Apr 18, 2022

- 22_0050

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

LT6105IMS8#PBF

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LT6105IMS8#TRPBF

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Qualification Results Summary

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Delta Qualification Matrix

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Oct 11, 2022

- 22_0244

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Epoxy Change from Henkel 8290 to 8290A for MSOP Package

LT6105CMS8#PBF

PRODUCTION

LT6105CMS8#TRPBF

PRODUCTION

LT6105HMS8#PBF

PRODUCTION

LT6105HMS8#TRPBF

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LT6105IMS8#PBF

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LT6105IMS8#TRPBF

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pdf

PCN22_0244_Form

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xls

Material_Report

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pdf

Qualification Results Summary

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xlsm

Delta Qualification Matrix

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Feb 3, 2020

- 20_0128

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Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC

LT6105CMS8#PBF

PRODUCTION

LT6105CMS8#TRPBF

PRODUCTION

LT6105HMS8#PBF

PRODUCTION

LT6105HMS8#TRPBF

PRODUCTION

LT6105IMS8#PBF

PRODUCTION

LT6105IMS8#TRPBF

PRODUCTION

pdf

PCN20_0128_Form

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xls

Material_Report

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Apr 18, 2022

- 22_0050

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

LT6105IMS8#PBF

PRODUCTION

LT6105IMS8#TRPBF

PRODUCTION

pdf

PCN22_0050_Form

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xls

Material_Report

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pdf

Qualification Results Summary

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xlsm

Delta Qualification Matrix

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Software & Part Ecosystem

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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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LT6105 - Specialty Amplifiers Download

1.14 K

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LT6105 Demo Circuit - Unidirectional Current Sense Amplifier for Negative Supplies Download

2.00K

spice tool Lt Spice

LT6105 Demo Circuit - Current Sense Monitor for +15V & -15V Supplies (0A to 2A) Download

3.00K

spice tool Lt Spice

LT6105 Demo Circuit - Unidirectional Current Sense Amplifier for a 1V Supply (0A to 10A) Download

2.00K

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