Digital potential converter and integrated circuit thereof
A digital potential, converter technology, applied in circuits, electrical solid devices, logic circuit connection/interface layout, etc., can solve the problems of thin gate oxide layer, gate oxide layer collapse, high power consumption, etc.
Inactive Publication Date: 2004-06-23
IP FIRST
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However, analog components are bulky and consume a lot of power, which is not suitable for the application of VLSI components
[0007] Therefore, what is needed is a technology that can control the shrinkage of the P-channel output drive element. Due to the large degree of shrinkage, the gate oxide layer of this element is too thin to withstand the input signal potential as high as the output potential required. while prone to gate oxide breakdown
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[0092] Other features and advantages of the present invention will become clearer after referring to the following detailed description in conjunction with the accompanying drawings.
[0093] The following description is provided in the context of a specific embodiment and its prerequisites to enable those skilled in the art to utilize the invention. However, various modifications to this preferred embodiment will be readily apparent to those skilled in the art, and the general principles discussed herein may be applied to other embodiments. Therefore, the present invention is not limited to the specific embodiments shown and described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
[0094] The inventors of the present application have noticed that there is a need to use scaled-down drive elements which must have high output voltages but cannot tolerate high input voltages. Therefore, the inventor proposes an...
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A digital level shifter for driving the input of a scaled P-channel driver device within a voltage shifted range to preclude gate-oxide breakdown of the scaled driver device. The scaled driver device has an output operative within an elevated voltage range, so that the voltage shifted range biases the voltage associated with a logic signal from a lower voltage level to an intermediate level to preclude gate-oxide breakdown and protect the scaled driver device. The digital level shifter is implemented using digital devices thereby avoiding analog bias devices. The digital level shifter and the scaled driver device may be implemented on the same integrated circuit (IC) and fabricated using the same process as core circuitry so that the IC may directly interface external devices operating at elevated voltage levels without damaging the core circuitry or the scaled driver device.
Description
technical field [0001] The present invention relates to voltage translation circuits, and more particularly to a digital level converter, which maintains the integrity of the gate oxide layer of a driver element coupled to an external element operating at a high potential, wherein the driver element is scaled down to inputs that cannot withstand high voltages. Background technique [0002] This application claims priority to US Application No. 10 / 317,241, filed December 11,2002. [0003] With the development of integrated circuit design and process technology over the years, the operating voltage tends to be adjusted downwards with the component size. Very large scale integrated circuits (VLSI), especially microprocessors, have always been at the forefront in scaling down the size and voltage. Therefore, a VLSI device operating at a low voltage must be coupled to an external device, such as an I / O device, through an interface, and the reduction of such devices is not as la...
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IPC IPC(8): H01L27/02H03K17/04H03K17/60H03K19/0185
Inventor 詹姆斯·R·朗勃格
Owner IP FIRST