LT6375 - ±270V Common Mode Voltage Difference Amplifier

Features

  • ±270V Common Mode Voltage Range
  • 97dB Minimum CMRR (LT6375A)
  • 0.0035% (35ppm) Maximum Gain Error (LT6375A)
  • 1ppm/°C Maximum Gain Error Drift
  • 2ppm Maximum Gain Nonlinearity
  • Wide Supply Voltage Range: 3.3V to 50V
  • Rail-to-Rail Output
  • 350μA Supply Current
  • Selectable Internal Resistor Divider Ratio
  • 300μV Maximum Offset Voltage (LT6375A)
  • 575kHz –3dB Bandwidth (Resistor Divider = 7)
  • 375kHz –3dB Bandwidth (Resistor Divider = 20)
  • –40°C to 125°C Specified Temperature Range
  • Low Power Shutdown: 20μA (DFN Package Only)
  • Space-Saving MSOP and DFN Packages

Typical Application

LT6375 Typical Application
LT6375 Typical Application

Description

The LT®6375 is a unity-gain difference amplifier which combines excellent DC precision, a very high input common mode range and a wide supply voltage range. It includes a precision op amp and a highly-matched thin film resistor network. It features excellent CMRR, extremely low gain error and extremely low gain drift.

Comparing the LT6375 to existing difference amplifiers with high common mode voltage range, the selectable resistor divider ratios of the LT6375 offer superior system performance by allowing the user to achieve maximum SNR, precision and speed for a specific input common mode voltage range.

The op amp at the core of the LT6375 has Over-The-Top® protected inputs which allow for robust operation in environments with unpredictable voltage conditions. See the Applications Information section for more details.

The LT6375 is specified over the –40°C to 125°C temperature range and is available in space-saving MSOP16 and DFN14 packages.

Packaging

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

Part Number Package Code Temp Package
Drawing
RoHS
LT6375AHDF#PBF 4x4 DFN-14 DF H 05-08-1963 Yes
LT6375AHDF#TRPBF 4x4 DFN-14 DF H 05-08-1963 Yes
LT6375AHMS#PBF MS-16 MS H 05-08-1847 Yes
LT6375AHMS#TRPBF MS-16 MS H 05-08-1847 Yes
LT6375HDF#PBF 4x4 DFN-14 DF H 05-08-1963 Yes
LT6375HDF#TRPBF 4x4 DFN-14 DF H 05-08-1963 Yes
LT6375HMS#PBF MS-16 MS H 05-08-1847 Yes
LT6375HMS#TRPBF MS-16 MS H 05-08-1847 Yes
LT6375IDF#PBF 4x4 DFN-14 DF I 05-08-1963 Yes
LT6375IDF#TRPBF 4x4 DFN-14 DF I 05-08-1963 Yes
LT6375IMS#PBF MS-16 MS I 05-08-1847 Yes
LT6375IMS#TRPBF MS-16 MS I 05-08-1847 Yes


LT6375 Package Drawing
LT6375 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
LT6375AHDF#PBF 4x4 DFN-14 H $7.02 $5.05 Yes
LT6375AHDF#TRPBF 4x4 DFN-14 H $5.11 Yes
LT6375AHMS#PBF MS-16 H $6.88 $4.95 Yes
LT6375AHMS#TRPBF MS-16 H $5.01 Yes
LT6375HDF#PBF 4x4 DFN-14 H $4.88 $3.51 Yes
LT6375HDF#TRPBF 4x4 DFN-14 H $3.57 Yes
LT6375HMS#PBF MS-16 H $4.72 $3.39 Yes
LT6375HMS#TRPBF MS-16 H $3.45 Yes
LT6375IDF#PBF 4x4 DFN-14 I $4.24 $3.05 Yes
LT6375IDF#TRPBF 4x4 DFN-14 I $3.11 Yes
LT6375IMS#PBF MS-16 I $4.10 $2.95 Yes
LT6375IMS#TRPBF MS-16 I $3.01 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
DC2443A LT6375 High VCM Diff Amp Demo Board $50.00
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Click here to view our complete list of demo boards

Applications

  • High Side or Low Side Current Sensing
  • Bidirectional Wide Common Mode Range Current Sensing
  • High Voltage to Low Voltage Level Translation
  • Precision Difference Amplifier
  • Industrial Data-Acquisition Front-Ends
  • Replacement for Isolation Circuits

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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 IV:
LT6375

Technical Support