Wideband RMS-DC Converter Building Block

The LT1088 is a thermally based RMS-DC converter building block. It converts the input waveform to heat. Using external circuitry, the thermal signal is expressed as a DC output voltage.

LTC's proprietary thermal packaging process permits accurate thermal signal processing in a standard IC package. The thermal method provides far greater bandwidth than RMS converters based on logarithmic computing techniques. The LT1088's high voltage breakdown allows crest factor measurements of 50:1 and operation over a 20:1 input dynamic range. Resistive inputs of 50Ω or 250Ω accommodate drive from a wide variety of sources.

Applications

* Wideband RMS Voltmeters

* RF Leveling Loops

* Wideband AGC

* High Crest Factor Measurements

* SCR Power Monitoring

* Obsolete: Datasheet For Reference Only. Contact Analog Devices For Potential Replacement

* 300MHz 3dB Bandwidth

* 1% Accuracy DC-50MHz

* 2% to 100MHz

* Bandwidth Flat Over Input Voltage Range

* 50:1 Crest Factor

* 20:1 Dynamic Range

* 35V Peak Input

* Thermally Based Operation

* Fully Specified Thermal and Electrical Parameters

* Standard IC Packages

* Resistive Inputs