Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Philip T. Hisayasu0
Peter Kipfelsberger0
Kim E. Beumer0
Date of Patent
April 15, 2008
0Patent Application Number
110589660
Date Filed
February 16, 2005
0Patent Primary Examiner
Patent abstract
A device for measuring voltage levels includes a root mean square (RMS) detector. The RMS detector includes a linear multiplier, a log converter, a low-pass filter and a temperature compensator. The linear multiplier multiplies a voltage of an input signal by the voltage of the input signal. The low-pass filter couples to an output of the linear multiplier. The log converter generates a logarithmic signal having a voltage that is logarithmically related to a voltage of an output of the low-pass filter. The temperature compensator adjusts the logarithmic signal based on a temperature of the RMS detector. The RMS detector is capable of determine an RMS voltage level of the input signal.
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