Junction capacitor compensation for wave shaping

Details Junction capacitor compensation for wave shaping Junction capacitor compensation for wave shaping

1997-01-23

1999-09-14

Ton, My-Trang Nu

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Regenerating or restoring rectangular or pulse waveform

327194, H03K 501

Patent

active

059528583

ABSTRACT:
A method and structure for wave-shaping of digital waveforms of integrated circuit processes that do not have area efficient dielectric capacitors is disclosed. The dielectric capacitors of the prior art are replaced with a first, linearizing diode and a second diode of a wave-shaping circuit, each diode having a junction capacitance that varies with voltage applied across the diode. The first, linearizing diode is supplied with a constant current from a constant current source. A current inversely proportional to the junction capacitance of the first, linearizing diode is produced at a node defined as the connection between the constant current source and the first linearizing diode. The current at the node is supplied to the second diode to produce an output voltage of the wave-shaping circuit that is linear with respect to time.

REFERENCES:
patent: 3676697 (1972-07-01), Davenport
patent: 3731232 (1973-05-01), Hekimian
patent: 5578815 (1996-11-01), Nakase et al.
patent: 5642067 (1997-06-01), Grace

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