A New True RMS-to-DC Converter in CMOS Technology

This paper presents a new true RMS-to-DC converter circuit based on a square-root-domain squarer/divider. The circuit is designed by employing up-down translinear loop and using of MOSFET transistors that operate in strong inversion saturation region. The converter offer advantages of two-quadrant input current, low circuit complexity, low supply voltage (1.2V) and immunity from the body effect. The circuit has been simulated by HSPICE. The simulation results are seen to conform to the theoretical analysis and shows benefits of the proposed circuit.

Authors:

• H. Asiaban
• E. Farshidi

Keywords:

• Current-mode
• squarer/divider
• low-pass filter
• converter
• translinear loop
• RMS-to-DC.

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