Output buffer with controlled slew rate for driving a range...

Details Output buffer with controlled slew rate for driving a range... Output buffer with controlled slew rate for driving a range...

2006-03-07

2006-03-07

Zweizig, Jeffrey (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Slope control of leading or trailing edge of rectangular or...

C326S087000

Reexamination Certificate

active

07009435

ABSTRACT:
Output buffer slew rate variation over variations in load capacitance is minimized by dividing output voltage transitions into distinct time and output current segments. During the first time segment, the first drive stage with the smallest current is employed. After subsequent delays, additional drive stages are employed and the load current is sequentially increased. Each drive stage employs a specifically sized feedback device which, depending upon its dimensions will provide either parasitic capacitance to slow transitions or positive feedback to speed up transitions. The first stages are sized to incorporate parasitic capacitance, resulting in little change in the settling time of small capacitance loads over prior art output buffers. Latter stages use positive feedback to quicken the transition time which dramatically improves the settling time for larger load capacitances over prior art output buffers.

REFERENCES:
patent: 4604731 (1986-08-01), Konishi
patent: 5808478 (1998-09-01), Andresen
patent: 5821783 (1998-10-01), Torimaru et al.
patent: 5854560 (1998-12-01), Chow
patent: 5926651 (1999-07-01), Johnston et al.
patent: 6265913 (2001-07-01), Lee et al.
patent: 6380770 (2002-04-01), Pasqualini
patent: 6583644 (2003-06-01), Shin
R. Senthinathan et al., “Application Specific CMOS Output Driver Circuit Design Techniques to Reduce Simultaneous Switching Noise,” IEEE Journal of Solid-State Circuits, vol. 28, No. 12, Dec. 1993, pp. 1383-1388.

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