LTC6104 - High Voltage, High Side, Bi-Directional Current Sense Amplifier

Features

  • Wide Supply Range: 4V to 60V with 70V Absolute Maximum
  • Low Offset Voltage: ±450µV Maximum
  • Fast Response: 1µs Response Time
  • Gain Configurable with External Resistors; Each Direction is Gain Configurable
  • Low Input Bias Current: 170nA Maximum
  • PSRR: 110dB Minimum
  • Output Current: ±1mA Maximum
  • Low Supply Current: 520µA, VS = 12V
  • Specified for –40°C to 125°C Temperature Range
  • Available in an 8-Lead MSOP Package

Typical Application

LTC6104 Typical Application
LTC6104 Typical Application

Description

The LTC6104 is a versatile, high voltage, high side, bidirectional current sense amplifier. Design flexibility is provided by the excellent device characteristics: ±450µV maximum offset and only 520µA of current consumption (typical at 12V). The LTC6104 operates on supplies from 4V to 60V.

The LTC6104 monitors bi-directional current via the voltage across an external sense resistor (shunt resistor). This sense voltage is then translated into a ground referenced signal. Gain is set with three external resistors and can be separately configured for both directions. 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 LTC6104 ideal for a wide variety of automotive, industrial and power management applications. A maximum input sense voltage of 500mV allows a wide range of currents to be monitored. The fast response makes the LTC6104 the perfect choice for load current warnings and shutoff protection control. With very low supply current, the LTC6104 is suitable for power sensitive applications.

The LTC6104 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
LTC6104CMS8#PBF MS-8 MS8 C 05-08-1660 Yes
LTC6104CMS8#TRPBF MS-8 MS8 C 05-08-1660 Yes
LTC6104HMS8#PBF MS-8 MS8 H 05-08-1660 Yes
LTC6104HMS8#TRPBF MS-8 MS8 H 05-08-1660 Yes
LTC6104IMS8#PBF MS-8 MS8 I 05-08-1660 Yes
LTC6104IMS8#TRPBF MS-8 MS8 I 05-08-1660 Yes


LTC6104 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
LTC6104CMS8#PBF MS-8 C $1.97 $1.38 Yes
LTC6104CMS8#TRPBF MS-8 C $1.44 Yes
LTC6104HMS8#PBF MS-8 H $2.56 $1.79 Yes
LTC6104HMS8#TRPBF MS-8 H $1.85 Yes
LTC6104IMS8#PBF MS-8 I $2.27 $1.59 Yes
LTC6104IMS8#TRPBF MS-8 I $1.65 Yes
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* 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
DC1117A LTC6104 Current Sense Demo Board $50.00
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Click here to view our complete list of demo boards

Applications

  • Current Shunt Measurement
  • Battery Monitoring
  • Remote Sensing
  • Power Management

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Design Tools

LTspice

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Models for the following parts are available in LTspice:
LTC6104

Technical Support