LTC1968CMS8#TRPBF

LTC1968 is a true RMS-to-DC converter that uses an innovative delta-sigma computational technique. The benefits of the device proprietary architecture, when compared to conventional log-antilog RMS-to-DC converters, are higher linearity and accuracy, bandwidth independent of amplitude and improved temperature behaviour. It operates with single-ended or differential input signals and accurately supports crest factors upto 4. Common mode input range is rail-to-rail. Differential input range is 1VPEAK, and offers unprecedented linearity. It allows hassle-free system calibration at any input voltage. It is widely used in application such as true RMS digital multimeters and panel meters, true RMS AC + DC measurements etc.

• Linearity error is 0.02% typical
• 1% additional gain error is 500KHz typical
• ±3dB frequency is 15MHz typical
• 3dB bandwidth independent of input voltage amplitude
• True RMS-DC conversion with only one external capacitor
• Delta sigma conversion technology
• Ultralow shutdown current is 0.1µA typical
• Rail-to-rail output, separate output reference pin allows level shifting
• Operating temperature is -40°C to 85°C
• Package style is 8-lead plastic MSOP

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