Internal power supply for IC with temp. compensating pedestal generator
A voltage generator and reference voltage technology, applied in circuits, power lines, electrical solid devices, etc., can solve problems such as inability, temperature insensitivity, and control of internal reference voltages
Inactive Publication Date: 2003-02-05
SAMSUNG ELECTRONICS CO LTD
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Problems solved by technology
[0009] Since the above-mentioned conventional internal power supply voltage generator is not sensitive to temperature, the value of internal reference voltage VREFP cannot be controlled by temperature change
Therefore, the value of the internal reference voltage VREFP cannot be controlled by temperature changes
Method used
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[0032] Korean Patent No. 01-39760 filed on July 4, 2001 entitled "Internal Reference Voltage Generator Capable of Controlling Internal Reference Voltage Value According to Temperature Change and Internal Power Supply Voltage Generator Including Internal Reference Voltage Generator" is hereby introduced Please, it's all available for reference.
[0033] The present invention will be described more fully hereinafter with reference to the accompanying drawings in which preferred embodiments of the invention are shown. Hereinafter, the present invention will be described in detail by introducing preferred embodiments of the invention with reference to the accompanying drawings. Like numbers refer to like elements throughout the various figures.
[0034] Figure 4 An exemplary internal reference voltage generator circuit according to a first embodiment of the present invention is shown. refer to Figure 4 , the internal reference voltage generator preferably includes: a differe...
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The present invention provides a temperature-compensating reference voltage generator, including a temperature-compensating voltage divider, or variable voltage generator, for dividing an input reference voltage in order to generate a temperature-compensated output voltage. Preferably included, are a first differential amplifier for amplifying a voltage difference between a first reference voltage and a first feedback voltage in order to output an internal reference voltage, a first voltage divider for generating and outputting a first feedback voltage in response to the temperature-compensated voltage, the first voltage divider further including, two resistive elements for controlling a magnitude of reference voltage. In an embodiment of the present invention, operation of MOS transistors in a weak inversion region compensates for changes in temperature, thereby generating a temperature-independent voltage reference, and thus a temperature-independent power supply voltage, thereby reducing fluctuations in performance of semiconductor devices caused by variations in temperature.
Description
technical field [0001] The present invention relates to semiconductor devices. More particularly, the present invention relates to internal reference voltage generators and internal power supply voltage generators in semiconductor devices. Background technique [0002] In conventional semiconductor devices, especially semiconductor memory devices, in order to achieve stable low-power operation, an internal power supply voltage is generated from an external power supply voltage and used as a power supply for each circuit on a chip. For semiconductor devices, the current in a transistor varies with temperature, and thus the performance of circuits having the transistors is subject to fluctuations. For example, during a temperature rise, during a strong inversion, the mobility of carriers in the transistor decreases, thus reducing the current and operating speed in the circuit. [0003] In order to reduce such fluctuations in performance of semicondu...
Claims
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Login to View More IPC IPC(8): H01L27/04G05F3/24G11C5/14H01L21/822H03F3/45
CPCY10S323/907G05F3/245G11C5/14
Inventor 沈载润
Owner SAMSUNG ELECTRONICS CO LTD