Semiconductor integrated circuit for squaring a signal with supp

Details Semiconductor integrated circuit for squaring a signal with supp Semiconductor integrated circuit for squaring a signal with supp

1984-01-19

1986-04-29

Heyman, John S.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307261, 307501, 307497, 328144, 330253, 330257, G06G 720

Patent

active

045859612

ABSTRACT:
An integrated circuit for squaring an original input signal includes a pair of dual-ended difference amplifiers to each of which the input signal is delivered, a pair of dual-to-single-ended converters, each receiving the respective dual-ended output of the respective difference amplifier, and a summing network for summing the squares of the outputs of the dual-to-single-ended converters. One of the dual-to-single-ended converters receives the dual-ended output of the corresponding dual-ended amplifier in opposite (cross-coupled) order from that of the other, whereby the output of the summing network is, except for an additive constant, proportional to the square of the original input signal independently of power supply voltage fluctuations within reasonable limits.

REFERENCES:
patent: 3710146 (1971-07-01), Ohsawa
patent: 4342926 (1982-08-01), Whatley
O. A. Seriki et al., "Direct-Coupled MOS Squaring Circuit," IEEE Journal of Solid-State Circuits, vol. SC-14, No. 4, Aug. 1979, pp. 766-768.

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