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  2. Analog Functions
  3. RMS to DC Converters
  4. LTC1967


Features and Benefits

  • High Linearity:
    • 0.02% Linearity Allows Simple System Calibration
  • Wide Input Bandwidth:
    • Bandwidth to 0.1% Additional Gain Error: 40kHz
    • Bandwidth Independent of Input Voltage Amplitude
  • No-Hassle Simplicity:
    • True RMS-DC Conversion with Only One External Capacitor
    • Delta Sigma Conversion Technology
  • Low Supply Current:
    • 330µA Typ
  • Ultralow Shutdown Current:
    • 0.1µA
  • Flexible Inputs:
    • Differential or Single Ended
    • Rail-to-Rail Common Mode Voltage Range
    • Up to 1VPEAK Differential Voltage
  • Flexible Output:
    • Rail-to-Rail Output
    • Separate Output Reference Pin Allows Level Shifting
  • Small Size:
    • Space Saving 8-Pin MSOP Package

Product Details

The LTC1967 is a true RMS-to-DC converter that uses an innovative delta-sigma computational technique. The benefits of the LTC1967 proprietary architecture when compared to conventional log-antilog RMS-to-DC converters are higher linearity and accuracy, bandwidth independent of amplitude and improved temperature behavior.

The LTC1967 operates with single-ended or differential input signals (for EMI/RFI rejection) and supports crest factors up to 4. Common mode input range is rail-to-rail. Differential input range is 1VPEAK, and offers unprecedented linearity. The LTC1967 allows hassle-free system calibration at any input voltage.

The LTC1967 has a rail-to-rail output with a separate output reference pin providing flexible level shifting; it operates on a single power supply from 4.5V to 5.5V. A low power shutdown mode reduces supply current to 0.1µA.

The LTC1967 is packaged in the space-saving MSOP package, which is ideal for portable applications.


  • True RMS Digital Multimeters and Panel Meters
  • True RMS AC + DC Measurements

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

Tools & Simulations


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Product Recommendations

LTC1967 Companion Parts

Recommended Related Parts

Design Resources

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 Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
LTC1967CMS8#PBF Material Declaration Reliability Data 8-Lead MSOP
LTC1967CMS8#TRPBF Material Declaration Reliability Data 8-Lead MSOP
LTC1967IMS8#PBF Material Declaration Reliability Data 8-Lead MSOP
LTC1967IMS8#TRPBF Material Declaration Reliability Data 8-Lead MSOP
Wafer Fabrication Data R415 Reliability Data

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Sample & Buy

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Evaluation Boards

Pricing displayed is based on 1-piece.

Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.