Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Converting input voltage to output current or vice versa
Patent
1996-08-02
1998-09-29
Cunningham, Terry
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Converting input voltage to output current or vice versa
327538, 327543, H02M 1100
Patent
active
058150129
ABSTRACT:
A fully integrated voltage-to-current converter consisting of a two-stage direct amplifier with an overall feedback network having an active differential current-to-voltage converter. The first stage of the two-stage direct amplifier is a voltage-to-voltage converter receiving an input voltage signal, and the second stage is a transconductance amplifier supplying an output current. In the overall feedback network, a voltage measure of the output current is applied to a differential amplifier which cancels out all DC components and amplifies only the AC components. The amplified AC components are fed back to the input. The feedforward gain of the two-stage direct amplifier and the feedback gain of the overall feedback network may be separately adjusted. The differential amplifier includes a local resistive feedback network such that the local gain of the differential amplifier is determined by resistor values and does not introduce any non-linear elements. The overall feedback network gain of the voltage-to-current converter may be adjusted without affecting the direct amplifier solely by varying the local resistive feedback network of the differential amplifier.
REFERENCES:
patent: 4703249 (1987-10-01), De La Plaza et al.
patent: 5357156 (1994-10-01), Herrington
patent: 5519310 (1996-05-01), Bartlett
patent: 5606277 (1997-02-01), Feliz
Olesin, Insepc-"Bilateral Current Source is Digitally Programmable", Sep. 1975, pp. 95 and 97.
Shih, Designer's Casebook-"Voltage-to-Current Converter Handles Bilateral Signals", May 1979, p. 124.
S. Hadri and B. Leung, "Impedance Boosting Techniques Based on BiCMOS Technology", IEEE Journal of Solid-State Circuits, vol. 28, No. 2, pp. 157-161, Feb. 1993.
Klaas Bult and Govert J. G. M. Geelen, "A Fast-Settling CMOS Op Amp for SC Circuits with 90-dB DC Gain", IEEE Journal of Solid-State Circuits, vol. 25, No. 6, pp. 1379-1384, Dec. 1990.
Maloberti Franco
Rivoir Roberto
Atmel Corporation
Cunningham Terry
Haro Rosalio
Schneck Thomas
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