Wideband differential voltage-to-current converters

Details Wideband differential voltage-to-current converters Wideband differential voltage-to-current converters

1990-05-16

1992-06-30

Westin, Edward P.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307494, 307261, 328160, H03K 400, H03K 522

Patent

active

051265869

ABSTRACT:
Voltage-to-Current (V-I) converters of the differential input and differential output type designed to be fabricated as an integrated circuit on a single monolithic chip. The circuit includes a first pair of resistors connected between first and second input terminals with their common node connected to the bases of a pair of NPN output transistors supplying differential output currents from their collectors. The emitters of these transistors are connected through corresponding resistors to the input terminals respectively. A capacitor is connected between the common bases and reference (ground) to establish an appropriate time constant for achieving high complementarily of the output currents. Variations on this basic circuit are disclosed for substantially eliminating input bias current and for reducing both odd and even-order distortion in the output signal.

REFERENCES:
patent: 3544780 (1970-03-01), Jorgensen
patent: 4146844 (1979-03-01), Quinn
patent: 4390848 (1983-06-01), Blauschild
patent: 4586155 (1986-04-01), Gilbert

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