A wide-band technique for vector summation and RMS-DC conversion

A circuit configuration is presented for wideband analog computation of both the vector-sum function and the RMS-DC conversion function. Design of the circuit is based on a systematic approach to translinear circuit synthesis. Errors due to finite transistor current gain are compensated by means of a novel technique. Measured performance results based on an experimental monolithic implementation in a standard bipolar process are presented. Bandwidths of 25 and 80 MHz are achieved for vector summation and RMS-DC conversion, respectively.

[1]  Frank Doorenbosch.  An Integrated Wide-Tunable Sine Oscillator , 1975, 1975 First European Solid State Circuits Conference (ESSCIRC).

[2]  B. Gilbert.  Erratum: Translinear circuits: a proposed classification , 1975 .

[3]  B. Gilbert.  Translinear circuits: a proposed classification , 1975 .

[4]  R.F. Wassenaar,et al.  A Wideband Accurate Vector-Sum Circuit , 1983, ESSCIRC '83: Ninth European Solid-State Circuits Conference.

[5]  R. Barker.  B.J.T. frequency doubling with sinusoidal output , 1975 .

[6]  B. Gilbert,et al.  A monolithic RMS-DC converter with crest-factor compensation , 1976, 1976 IEEE International Solid-State Circuits Conference. Digest of Technical Papers.

[7]  Barrie Gilbert.  Novel technique for r.m.s.--d.c. conversion based on the difference of squares , 1975 .

[8]  Raimondo Caprio.  Precision differential voltage--current convertor , 1973 .