LTC6103 - Dual High Voltage, High Side Current Sense Amplifier

Features

  • Two Independent Current Sense Amplifiers
  • Wide Supply Range: 4V to 60V, 70V Absolute Maximum
  • Low Offset Voltage: 450µV Maximum
  • Fast Response: 1µs Response Time
  • Gain Configurable with External Resistors
  • Low Input Bias Current: 170nA Maximum
  • PSRR: 110dB Minimum (6V to 60V)
  • Output Current: 1mA Maximum
  • Low Supply Current: 275µA per Amplifier, VS = 12V
  • Specified for –40°C to 125°C Temperature Range
  • Available in an 8-lead MSOP Package
Designed for Automotive and Transportation Applications
AEC-Q100 generic family data available for specific packages


Typical Application

LTC6103 Typical Application
LTC6103 Typical Application

Description

The LTC6103 is a versatile, high voltage, high side, dual current sense amplifier. The two internal amplifiers are independent except that they share the same V– terminal. Design flexibility is provided by the excellent device characteristics: 450µV maximum offset, and only 275µA of current consumption (typical at 12V) for each amplifier. The LTC6103 operates on supplies from 4V to 60V.

The LTC6103 monitors current via the voltage across an external sense resistor (shunt resistor). Internal circuitry converts input voltage to output current, allowing for a small sense signal on a high common mode voltage to be translated into a ground referenced signal. Low DC offset allows the use of a small shunt resistor and large gain-setting resistors. As a result, power loss in the shunt is minimal.

The wide operating supply range and high accuracy make the LTC6103 ideal for an extensive variety of applications from automotive to industrial and power management. The fast response makes the LTC6103 the perfect choice for load current warnings and shutoff protection control. With very low supply current, the LTC6103 is suitable for power sensitive applications. The LTC6103 is available in an 8-lead MSOP package.

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
Drawing
RoHS
LTC6103CMS8#PBF MS-8 MS8 C 05-08-1660 Yes
LTC6103CMS8#TRPBF MS-8 MS8 C 05-08-1660 Yes
LTC6103HMS8#PBF MS-8 MS8 H 05-08-1660 Yes
LTC6103HMS8#TRPBF MS-8 MS8 H 05-08-1660 Yes
LTC6103IMS8#PBF MS-8 MS8 I 05-08-1660 Yes
LTC6103IMS8#TRPBF MS-8 MS8 I 05-08-1660 Yes


LTC6103 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LTC6103CMS8#PBF MS-8 C $2.38 $1.66 Yes
LTC6103CMS8#TRPBF MS-8 C $1.72 Yes
LTC6103HMS8#PBF MS-8 H $3.09 $2.16 Yes
LTC6103HMS8#TRPBF MS-8 H $3.15 $2.22 Yes
LTC6103IMS8#PBF MS-8 I $2.73 $1.91 Yes
LTC6103IMS8#TRPBF MS-8 I $1.97 Yes
Buy NowRequest Samples
* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC1116A LTC6103 Current Sense Demo Board $50.00
Buy Now
Click here to view our complete list of demo boards

Designed for Automotive and Transportation Applications

Please contact your local sales representative for more information regarding reliability reports and AEC-Q100 data or to inquire about parts that are not included. For more information, view our Automotive and Transportation page

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LTC6103HMS8#PBF MS-8 H $3.09 $2.16 Yes
LTC6103HMS8#TRPBF MS-8 H $3.15 $2.22 Yes
LTC6103IMS8#PBF MS-8 I $2.73 $1.91 Yes
LTC6103IMS8#TRPBF MS-8 I $1.97 Yes
Buy NowRequest Samples
* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Applications

  • Current Shunt Measurement
  • Battery Monitoring
  • Remote Sensing
  • Power Management
  • High Voltage Level Translator

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Design Tools

LTspice

LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice

Models for the following parts are available in LTspice:
LTC6103

Technical Support