Resources Contact Us Home
Low-noise output buffer

Image Number 5 for United States Patent #6737886.

An output buffer for causing a voltage (Vout) of an integrated circuit output line (OUT,OUT_PAD) to switch from a voltage of a first voltage line (VDD) to a voltage of a second voltage line (GND) and vice versa, comprises a current path switch circuit (111a,111b) activatable for causing a prescribed current (Is) to constantly flow between the first and second voltage lines during a time between two successive switchings of the output line, and for causing the prescribed current to be deviated (Ic1) to the output line during at least an initial phase of an output line switching from the first voltage line voltage to the second voltage line voltage or vice versa. A current delivered by the first and second voltage lines is thus kept substantially constant in the output line switching. In this way, the time derivative of the current flowing between the first and the second voltage lines is kept small and low switching noise is induced.

  Recently Added Patents
Method for designing sunlight-reflection and heat-radiation multilayer film
Interface circuit
Tread portion of an automobile tire
Methods and systems for identifying and changing resolutions to cause an aspect ratio of a printed image to match an aspect ratio of image data
Adaptive control for uncertain nonlinear multi-input multi-output systems
Electric rotating machine for vehicle
Instantaneous single click perpetual date mechanism
  Randomly Featured Patents
Collapsible overhead guard
Group VA-doped solution-processed metal chalcogenides
Storing directory information for non uniform memory architecture systems using processor cache
Temperature-dependent switch
Toothbrush packaging
Infusibilization of organic silazane polymers
Thermal ripple-compensating, gain-flattening filter for an optical amplifier
Audio playback system
Security document carrying machine readable pattern
Method of remapping the input elements of a hand-held device