Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Current driver
Patent
1996-05-29
1997-11-04
Tran, Toan
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Current driver
327427, 327108, H03K 300
Patent
active
056844204
ABSTRACT:
A CMOS small-signal amplifier is arranged to drive separately but in synchronism the transistors of an output stage comprising a first output transistor of a first conductivity type and a second output transistor of a second conductivity type. Each of these output transistors is driven by a respective intermediate stage comprising a current source transistor and a driver transistor directly coupled to an input terminal and a control node of the respective output transistor. The current source transistors are biassed such that the said output transistors have a symmetrical duty cycle. There may be a single bias line connected to a current source transistor in one intermediate stage and a system of current mirrors coupling the bias line to the current source transistor in the other intermediate stage.
REFERENCES:
patent: 5315187 (1994-05-01), Cheng
patent: 5430335 (1995-07-01), Tanoi
patent: 5491436 (1996-02-01), Austin
patent: 5587678 (1996-12-01), Dijkmans
Tran Toan
VLSI Technology Inc.
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