Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Amplitude control
Patent
1998-06-15
2000-02-08
Tran, Toan
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Amplitude control
327404, H03L 500
Patent
active
060231831
ABSTRACT:
A voltage converter circuit (10) includes a primary P-type FET (20) having its source-drain conduction path connected between an input (22) and a first output node (23). An N-type FET (21) is connected in parallel with the primary P-type device (20) between the input (22) and first output node (23). The gate electrode of the primary P-type device (20) is connected to the first output node (23) while the gate electrode of the N-type device (21) is connected to a second voltage supply at the voltage level of a desired second voltage signal. A first digital signal at a first voltage level is applied to the input (22). The voltage produced at the first output node (23) equals the desired second voltage level and comprises the input signal voltage reduced by the threshold voltage of the primary P-type device (20). One or more additional P-type devices (40) may be connected in series with the primary P-type device (20) to reduce the output voltage level further.
REFERENCES:
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patent: 5394028 (1995-02-01), Feddeler et al.
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Cao Tai Anh
Ngo Hieu Trong
Nguyen Khanh Tuan Vu
Culbertson Russell D.
England Anthony V. S.
International Business Machines - Corporation
Tra Quan
Tran Toan
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