Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Slope control of leading or trailing edge of rectangular or...
Reissue Patent
2005-09-09
2010-11-16
Jager, Ryan C (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Slope control of leading or trailing edge of rectangular or...
C327S112000, C327S134000, C327S379000, C327S380000, C327S381000, C327S389000, C327S390000, C327S391000, C326S082000, C326S083000
Reissue Patent
active
RE041926
ABSTRACT:
The present invention discloses an output circuit that is able to adjust the output voltage slew rate and avoid short-circuit current, comprising: a control circuit for receiving an input data and generating a first set of control signals based on the input data; an output control device consisting of a first field effect transistor (FET) connected in series with a second field effect transistor (FET) and the point of connection is the output end for generating an output signal; a first capacitor having one end connected to a first working voltage and generates a first control voltage by charging/discharging on another end to control the gate of the first field effect transistor; a first switch for controlling charging/discharging of the first capacitor device based on the first set of control signals; a first current source for providing charging current for the first capacitor device; a second capacitor having one end connected to a second working voltage and generates a second control voltage by charging/discharging on another end to control the gate of the second field effect transistor; a second switch for controlling charging/discharging of the second capacitor device based on the first set of control signal; and a second current source providing charging current for the second capacitor device. The present invention adjusts output voltage slew rate of the output circuit by adjusting the time constant of the first and second capacitor devices.
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Jager Ryan C
Realtek Semiconductor Corp.
Thomas Kayden Horstemeyer & Risley LLP
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