Linear transfer voltage to current circuit

Details Linear transfer voltage to current circuit Linear transfer voltage to current circuit

1998-01-16

1999-10-05

Wells, Kenneth B.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Converting input voltage to output current or vice versa

327563, 327 67, 330260, H02M 1100

Patent

active

059630647

ABSTRACT:
A differential circuit having a relatively simple structure capable of delivering a linear transfer characteristic and expanding an input dynamic range. An increase in magnitude of differential input voltage V.sub.in applied to each gate of differential-pair MOSFETs M1 and M2 in the differential circuit decreases control voltage V.sub.CONT in a control circuit. On the other hand, since a current fed to MOSFETs M3 and M4 in the differential circuit decreases simultaneously, a current supplied to the differential-pair MOSFETs M1 and M2 in the differential circuit increases. Thus, the present invention makes it possible to effectively expand the input dynamic range with respect to differential input voltage V.sub.in.

REFERENCES:
patent: 5028881 (1991-07-01), Jackson
patent: 5101126 (1992-03-01), Butler et al.
patent: 5465070 (1995-11-01), Koyama et al.
patent: 5608352 (1997-03-01), Itakura
Pai et al., "A 40-mW 55 Mb/s CMOS Equalizer for Use in Magnetic Storage Read Channels", IEEE Journal of Solid-State Circuits, vol. 29, No. 4, 1994, pp. 489-499.

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