LT6109
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LT6109

High Side Current Sense Amplifier with Reference and Comparators

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LTspice LT6109 - Specialty Amplifiers Download 3.22 KB
Part Models 16
1ku List Price Starting From $2.24
Features
  • Current Sense Amplifier
    • Fast Step Response: 500ns
    • Low Offset Voltage: 125μV Maximum
    • Low Gain Error: 0.2% Maximum
  • Internal 400mV Precision Reference
  • Internal Latching Comparators with Reset
    • Fast Response Time: 500ns
    • Total Threshold Error: ±1.25% Maximum
    • Two Comparator Polarity Options
  • Wide Supply Range: 2.7V to 60V
  • Supply Current: 550μA
  • Low Shutdown Current: 5μA Maximum
  • Specified for –40°C to 125°C Temperature Range
  • Available in 10-Lead MSOP Package
Additional Details
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The LT6109 is a complete high side current sense device that incorporates a precision current sense amplifier, an integrated voltage reference and two comparators. Two versions of the LT6109 are available. The LT6109-1 has the comparators connected in opposing polarity and the LT6109-2 has the comparators connected in the same polarity. In addition, the current sense amplifier and comparator inputs and outputs are directly accessible. The amplifier gain and comparator trip points are configured by external resistors. The open-drain comparator outputs allows for easy interface to other system components.

The overall propagation delay of the LT6109 is typically only 1.4μs, allowing for quick reaction to overcurrent and undercurrent conditions. The 1MHz bandwidth allows the LT6109 to be used for error detection in critical applications such as motor control. The high threshold accuracy of the comparators, combined with the ability to latch both comparators, ensures the LT6109 can capture high speed events.

The LT6109 is fully specified for operation from –40°C to 125°C, making it suitable for industrial and automotive applications. The LT6109 is available in a small 10-lead MSOP.

Applications

  • Overcurrent, Undercurrent and Fault Detection
  • Current Shunt Measurement
  • Battery Monitoring
  • Motor Control
  • Automotive Monitoring and Control
  • Remote Sensing
  • Industrial Control
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Documentation View All Documentation
LTspice LT6109 - Specialty Amplifiers Download 3.22 KB
Part Models 16
1ku List Price Starting From $2.24
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LT6109

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UPDATED 12/10/2012
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LT6109: High Side Current Sense Amplifier with Reference and Comparators Data Sheet

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UPDATED 12/10/2012
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LT6109-1/LT6109-2: High Side Current Sense Amplifier with Reference and Comparators Data Sheet

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UPDATED 09/06/2011
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LT6109: リファレンスとコンパレータを備えたハイサイド電流検出アンプ データシート

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User Guide

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UPDATED 08/16/2011
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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

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
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LT6109AIMS-1#PBF 10-Lead MSOP external-link
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LT6109AIMS-1#TRPBF 10-Lead MSOP external-link
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LT6109AIMS-2#PBF 10-Lead MSOP external-link
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LT6109HMS-1#PBF 10-Lead MSOP external-link
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LT6109HMS-1#TRPBF 10-Lead MSOP external-link
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LT6109HMS-2#PBF 10-Lead MSOP external-link
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LT6109HMS-2#TRPBF 10-Lead MSOP external-link
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LT6109IMS-1#PBF 10-Lead MSOP external-link
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LT6109IMS-1#TRPBF 10-Lead MSOP external-link
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LT6109IMS-2#PBF 10-Lead MSOP external-link
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LT6109IMS-2#TRPBF 10-Lead MSOP external-link
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High Side Current Sense Amplifier with Reference and Comparator

Evaluation Kits 2

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DC1659A-A

LT6109-1 | High Side Current Sense with Reference and Comparators

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DC1659A-B

LT6109-2 | High Side Current Sense with Reference and Comparators

Evaluation Kits2

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DC1659A-A

LT6109-1 | High Side Current Sense with Reference and Comparators
evaluation kit item images

DC1659A-B

LT6109-2 | High Side Current Sense with Reference and Comparators

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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