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Voltage generator

A voltage generator and voltage technology, used in instruments, static memory, digital memory information, etc., can solve problems such as poor stability, and achieve the effect of shortening response time

Active Publication Date: 2015-07-01
NAN YA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to improve the response time, one solution is to reduce the capacitance values ​​of the capacitors C1 and C2, however, this will cause the conventional DC voltage generator 100 to have poor performance in power supply rejection ratio (Power Supply Rejection Ratio, PSRR) and stability

Method used

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Embodiment Construction

[0023] Certain terms are used in the specification and preceding claims to refer to particular elements. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The description and the previous claims do not use the difference in name as the way to distinguish components, but use the difference in function of the components as the criterion for distinguishing. The term "comprising" mentioned throughout the specification and the previous claims is an open-ended term, so it should be interpreted as "including but not limited to". In addition, the term "coupled" here includes any direct and indirect electrical connection means. Therefore, if it is described in the text that a first device is coupled to a second device, it means that the first device can be directly electrically connected to the second device. , or indirectly electrically connected to the second device through other devices or connection means...

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PUM

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Abstract

A voltage generator includes a controllable voltage divider, a pull-up circuit and a first pull-down circuit. The controllable voltage divider is utilized for generating an output voltage at an output node of the controllable voltage divider according to a first reference voltage, a second reference voltage, and a control signal, wherein the second reference voltage is lower than the first reference voltage. The pull-up circuit is coupled to the output node of the controllable voltage divider and the first reference voltage, and is utilized for selectively connecting the first reference voltage to the output node of the controllable voltage divider. The first pull-down circuit is coupled to the output node of the controllable voltage divider and the second reference voltage, and is utilized for selectively connecting the second reference voltage to the output node of the controllable voltage divider.

Description

technical field [0001] The invention relates to a DC voltage generator with a faster response time. Background technique [0002] In the DRAM (Dynamic Random Access Memory, DRAM) that adopts the Double Data Rate (DDR) DDR4 specification, the data receiver (DQreceiver) will use the DC voltage generated by the internal DC voltage generator to judge The received signal is a logical value "0" or "1". Please refer to figure 1 , figure 1 is a schematic diagram of a conventional DC voltage generator 100 . Such as figure 1 As shown, the conventional DC voltage generator 100 includes a controllable voltage divider 110, a voltage regulator 120, and two capacitors C1, C2, wherein the controllable voltage divider 110 includes a power amplifier 122, a transistor M1, and two resistors R3 , R4. [0003] In the operation of the conventional DC voltage generator 100, the regulated voltage V of the conventional DC voltage generator 100 REFD The voltage level is controlled by the contro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11C11/4063
CPCG11C11/4074
Inventor 陈至仁赵光威
Owner NAN YA TECH