LT6108

RECOMMENDED FOR NEW DESIGNS

High Side Current Sense Amplifier with Reference and Comparator

Data Sheet Product Selection Table

Part Models: 24
1ku List Price: Starting From $1.83

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Overview

Current Sense Amplifier

Fast Step Response: 500ns
Low Offset Voltage: 125μV Maximum
Low Gain Error: 0.2% Maximum

Internal 400mV Precision Reference
Internal Comparator

Fast Response Time: 500ns
Total Threshold Error: ±1.25% Maximum
Latching or Non-Latching Comparator Option

Wide Supply Range: 2.7V to 60V
Supply Current: 450μA
Low Shutdown Current: 5μA Maximum
Specified for –40°C to 125°C Temperature Range
Available in 8-Lead MSOP and 8-Lead (2mm × 3mm) DFN Packages

The LT6108 is a complete high side current sense device that incorporates a precision current sense amplifier, an integrated voltage reference and a comparator. Two versions of the LT6108 are available. The LT6108-1 has a latching comparator and the LT6108-2 has a non-latching comparator. In addition, the current sense amplifier and comparator inputs and outputs are directly accessible. The amplifier gain and comparator trip point are configured by external resistors. The open-drain comparator output allows for easy interface to other system components.

The overall propagation delay of the LT6108 is typically only 1.4μs, allowing for quick reaction to overcurrent conditions. The 1MHz bandwidth allows the LT6108 to be used for error detection in critical applications such as motor control. The high threshold accuracy of the comparator, combined with the ability to latch the comparator, ensures the LT6108 can capture high speed events.

The LT6108 is fully specified for operation from –40°C to 125°C, making it suitable for industrial and automotive applications. The LT6108 is available in the small 8-lead MSOP and 8-lead DFN packages.

Applications

Overcurrent and Fault Detection
Current Shunt Measurement
Battery Monitoring
Motor Control
Automotive Monitoring and Control
Remote Sensing
Industrial Control

Part Models: 24
1ku List Price: Starting From $1.83

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
LT6108AHMS8-1#PBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT6108AHMS8-1#TRPBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT6108AHMS8-2#PBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT6108AHMS8-2#TRPBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT6108AIMS8-1#PBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT6108AIMS8-1#TRPBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT6108AIMS8-2#PBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT6108AIMS8-2#TRPBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT6108HDCB-1#TRMPBF	8-Lead DFN (2mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT6108HDCB-1#TRPBF	8-Lead DFN (2mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT6108HDCB-2#TRMPBF	8-Lead DFN (2mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT6108HDCB-2#TRPBF	8-Lead DFN (2mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT6108HMS8-1#PBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT6108HMS8-1#TRPBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT6108HMS8-2#PBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT6108HMS8-2#TRPBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT6108IDCB-1#TRMPBF	8-Lead DFN (2mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT6108IDCB-1#TRPBF	8-Lead DFN (2mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT6108IDCB-2#TRMPBF	8-Lead DFN (2mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT6108IDCB-2#TRPBF	8-Lead DFN (2mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT6108IMS8-1#PBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT6108IMS8-1#TRPBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT6108IMS8-2#PBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT6108IMS8-2#TRPBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Apr 17, 2025 - 25_0119 Bond Wire Change from Gold to Copper (Automotive)
		PCN25_0119_Form Material_Report Delta Qualification Matrix Qualification Results Summary
LT6108AHMS8-1#PBF	PRODUCTION
LT6108AHMS8-1#TRPBF	PRODUCTION
LT6108AHMS8-2#PBF	PRODUCTION
LT6108AHMS8-2#TRPBF	PRODUCTION
LT6108AIMS8-1#PBF	PRODUCTION
LT6108AIMS8-1#TRPBF	PRODUCTION
LT6108AIMS8-2#PBF	PRODUCTION
LT6108AIMS8-2#TRPBF	PRODUCTION
LT6108HMS8-1#PBF	PRODUCTION
LT6108HMS8-1#TRPBF	PRODUCTION
LT6108IMS8-1#PBF	PRODUCTION
LT6108IMS8-1#TRPBF	PRODUCTION
LT6108IMS8-2#PBF	PRODUCTION
LT6108IMS8-2#TRPBF	PRODUCTION
Jun 5, 2024 - 24_0003 Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2)
		PCN24_0003_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LT6108AHMS8-1#PBF	PRODUCTION
LT6108AHMS8-1#TRPBF	PRODUCTION
LT6108AHMS8-2#PBF	PRODUCTION
LT6108AHMS8-2#TRPBF	PRODUCTION
LT6108AIMS8-1#PBF	PRODUCTION
LT6108AIMS8-1#TRPBF	PRODUCTION
LT6108AIMS8-2#PBF	PRODUCTION
LT6108AIMS8-2#TRPBF	PRODUCTION
LT6108HMS8-1#PBF	PRODUCTION
LT6108HMS8-1#TRPBF	PRODUCTION
LT6108HMS8-2#PBF	PRODUCTION
LT6108HMS8-2#TRPBF	PRODUCTION
LT6108IMS8-1#PBF	PRODUCTION
LT6108IMS8-1#TRPBF	PRODUCTION
LT6108IMS8-2#PBF	PRODUCTION
LT6108IMS8-2#TRPBF	PRODUCTION
Feb 3, 2020 - 20_0128 Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC
		PCN20_0128_Form Material_Report
LT6108AHMS8-1#PBF	PRODUCTION
LT6108AHMS8-1#TRPBF	PRODUCTION
LT6108AHMS8-2#PBF	PRODUCTION
LT6108AHMS8-2#TRPBF	PRODUCTION
LT6108AIMS8-1#PBF	PRODUCTION
LT6108AIMS8-1#TRPBF	PRODUCTION
LT6108AIMS8-2#PBF	PRODUCTION
LT6108AIMS8-2#TRPBF	PRODUCTION
LT6108HMS8-1#PBF	PRODUCTION
LT6108HMS8-1#TRPBF	PRODUCTION
LT6108HMS8-2#PBF	PRODUCTION
LT6108HMS8-2#TRPBF	PRODUCTION
LT6108IMS8-1#PBF	PRODUCTION
LT6108IMS8-1#TRPBF	PRODUCTION
LT6108IMS8-2#PBF	PRODUCTION
LT6108IMS8-2#TRPBF	PRODUCTION
Apr 17, 2025 - 25_0043 Change of Gold to Copper Wire and BOM (Automotive)
		PCN25_0043_Form Material_Report Delta Qualification Matrix Qualification Results Summary
LT6108HDCB-1#TRMPBF	PRODUCTION
LT6108HDCB-1#TRPBF	PRODUCTION
LT6108IDCB-1#TRMPBF	PRODUCTION
LT6108IDCB-1#TRPBF	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Analog to Digital Converters (ADCs) 1
LTC2991	RECOMMENDED FOR NEW DESIGNS	Octal I²C Voltage, Current, and Temperature Monitor

Parts	Product Life Cycle	Description
LT6109	RECOMMENDED FOR NEW DESIGNS	High Side Current Sense Amplifier with Reference and Comparators

Tools & Simulations

LTspice 1

LT6108 / LTC6994 Demo Circuit - Energy-Tripped Circuit Breaker with Automatic Delayed Retry (5-80V Input, 500mA Threshold)

Models for the following parts are available in LTspice:

LT6108-1
LT6108-2

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.