Squaring circuits in MOS integrated circuit technology

Details Squaring circuits in MOS integrated circuit technology Squaring circuits in MOS integrated circuit technology

1988-03-18

1989-05-30

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

328132, 328144, 307490, 307497, 307500, 307501, 307261, G06G 720, G06G 712, H03K 500

Patent

active

048354210

ABSTRACT:
A squaring circuit (FIG. 1, 100; FIG. 3, 300) includes an operational amplifier (10) having its positive input terminal connected to ground, its negative input terminal connected through a nonlinear voltage-to-current conversion device (FIG. 1, T.sub.2, T.sub.3 ; FIG. 3, M.sub.1, M.sub.2, T.sub.2) to a balanced source of the input voltage (.+-.V.sub.IN), and its output terminal connected through a linear current-to-voltage conversion device (FIG. 1, R.sub.1 ; FIG. 3, T.sub.1, C.sub.1) to its negative input terminal. The circuit can be made to have a balanced output (FIGS. 2 and 5), and the circuit can be made in the configuration of either a continuous-time circuit (FIGS. 1 and 2) or a sampled-data circuit (FIGS. 3 and 5).

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patent: 4445053 (1984-04-01), Jaeger et al.
patent: 4539491 (1985-09-01), Nishioka et al.
patent: 4585961 (1986-04-01), Daubert
patent: 4736434 (1988-04-01), Filliman

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