Voltage-current converter

Details Voltage-current converter Voltage-current converter

1994-07-29

1995-10-31

Wong, Peter S.

Electricity: power supply or regulation systems

Self-regulating

Using a three or more terminal semiconductive device as the...

327562, 323315, G05F 326

Patent

active

054633087

ABSTRACT:
A differential voltage-current converter has two input transistors and two cross-coupled transistors arranged in a translinear loop, the difference voltage across the emitter resistors of the cross-coupled transistors being equal to the difference voltage across the input terminals. The difference current through the cross-coupled transistors is replicated in the output transistors, thereby enabling a larger output signal amplitude to be obtained. In order to increase the permissible input voltage the bases of the cross-coupled transistors are coupled to the input transistors via emitter-followers. By connecting the collectors of the emitter-followers to the collectors of the output transistors a compensation is obtained for the decreasing current gain at high frequencies.

REFERENCES:
patent: 4456887 (1984-06-01), Tokumo
patent: 5101126 (1992-03-01), Butler et al.
patent: 5184086 (1993-02-01), Inohana
patent: 5241227 (1993-08-01), Jung et al.
patent: 5394080 (1995-02-01), Rijns
patent: 5404097 (1995-04-01), Barou
R. Caprio, "Precision Differential Voltage-Current Convertor", Electronics Letters, vol. 9, No. 6, 22 Mar. 1973, pp. 147-148.

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