失调电压

本文分析了影响集成运算放大器的输入失调电压V（os）及温度漂移的因素、以及与温度的关系。提出了一种简单有效的减小失调电压V（os）及漂移（（？）

This paper analyses the factors that effect the input offset voltage V_ ( os ) and temperature drift the IC operational amplifier .

首先，利用Matlab进行ADC系统级仿真。验证失调电压、运放增益误差对级转换电路的输出范围的影响；

In the simulation of system level with Matlab tool , the paper discusses the influence of offset voltage and gain error to output range of pipelined stages .

可自校正失调电压的BiCMOS锁存比较器设计

Design for a Self-Calibrating Offset Voltage BiCMOS Comparator

为了消除失调电压，本文采用了二相旋转电流控制电路，其需要RC振荡器提供时钟控制信号，该调理电路中的高通滤波器还可以滤除信号中存在的闪烁噪声。

In addition , in order to eliminate the offset voltage , it must use the two phase rotation current control circuit , which needs RC oscillator for supplying the clock signal .

在版图的设计上，对输入级采用交叉耦合结构，减小由于工艺原理引起的MOS管匹配，从而减小电路的失调电压；

In layout design , the cross-couple structure is adopted in the input stage to minimize the MOSFET mismatch due to process , and consequently to lower the offset voltage in the circuits .

在Candence环境下用1.5μCMOS工艺模型进行仿真，该放大器能有效的消除5mV的输入失调电压且能减少由调制器开关引起的残余失调，而不需要任何的滤波器。

A spectre simulation of the circuit was performed using 1.5 μ CMOS model parameters , an amplitude of 0.5 mV of the amplifier input offset and low-frequency input noise can be effectively eliminated , without requiring any low-pass filtering .

基于预放大-锁存理论，提出了一种带1级预放大器的高速CMOS锁存比较器电路拓扑结构；阐述了其传输延迟时间、回馈噪声和输入失调电压的改进方法。

Based on preamplifier - latch theory , a topology structure of CMOS positive feedback comparator circuit with preamplifier is presented , and methods to improve transmit delay time , kick-back noise and input offset voltage of the circuit are described .

测试结果表明，电路直流开环增益为125dB，共模抑制比120dB，失调电压18μV，压摆率0.6V/μs。

Results show that it has achieved an open-loop gain of 125 dB , a CMRR of 120 dB , an offset voltage of 18 μ V and a slew rate of 0.6 V / μ s.

微弱光电流信号的放大一直是关键，选用了低失调电压和低失调电压漂移、低输入偏置电流和低失调电流误差的ICL7650作为运放，设计了对光强的精密测量电路。

As the same time , ICL7650 is selected to amplify the slender signal as it offers exceptionally low input offset voltage and is extremely stable with respect to time and temperature .

实验结果表明，通过补偿设计，实际电路的温度漂移为≤0.2%℃，失调电压漂移为100～200mV，符合使用要求。

Experimental results show that a temperature drift equal to or less than 0.2 % ℃ and an offset voltage drift of 100 ~ 200 mV for an actual derice , which meet the requirements for applications , have been achieved through the compensation designing .

通过输出存储的方法消除比较器失调电压的影响。

Output storage method is adopted to cancel the offset voltage .

可变增益放大器中失调电压的消除

Elimination of the Offset Voltage from a Variable Gain Amplifier

心电电极的直流失调电压和交流阻抗的研究

A study on DC offset voltage and AC impedance of ECG electrodes

放大器失调电压对交流有效值转换器的影响分析

Analysis on Influence of Offset Voltage of Amplifier on AC TRMS Converter

一种失调电压补偿电容比例型带隙基准源设计

Design of An Offset Voltage Compensation Ratio-Capacitance Bandgap Voltage Reference

一种低失调电压的集成电容压力传感器

An Integrated Capacitive Pressure Transducer with Lower offset Voltage

比较器采用开关电容全差分动态结构，可以有效的减小失调电压。

Full differential dynamic comparator is designed , which can save offset voltage ;

第二，能够消除直流电压的不匹配以及失调电压对输出信号的影响。

This method also supports cancellation of DC voltage mismatch and offset voltage .

低漂点相应于零失调电压。

And a low-drift point corresponding to the zero offset voltage may be obtained .

通过对普通列读出电路进行改进，在双采样电路基础上，增加了失调电压补偿过程。

The traditional readout circuit is improved by offset compensation based on double sampling technique .

三级差分放大器之间采用了开关电容电路耦合的方式，有效地消除了失调电压对比较器精度的影响。

To cancel the offset-voltage of the comparator , a switch capacitance circuit is used between the three pre-amplifier stages .

该调理电路不仅能够有效地放大微弱的霍尔信号，而且还能动态消除失调电压和噪声。

The regulate circuit can not only effectively amplification faint hall signal , but also dynamically eliminate the offset voltage .

该电路实现了全温度曲率补偿，降低了运放失调电压对精度的影响。

The effect of offset voltage on the accuracy is significantly reduced due to the realization of full temperature curvature compensation .

比较器的设计则重点关注失调电压的消除和功耗的节省。

When the comparator is designed , much attention is paid to relieve the offset voltage and save the power dissipation .

使用斩波技术，减小了带隙基准源中运放的失调电压所引起的误差，提高了基准源的精度。

A bandgap voltage reference based on chopper technology was used to enhance the output voltage precision of white-light LED driver .

通过一种数字自动校准技术，可以校准差分运放及其输入信号所产生的失调电压。

A digital automatic calibration technique is developed to trim the differential OPAMP 's input-referred and its former output stage offset voltages .

同时考虑了输入级的设计，采用基流自举补偿技术和偏置微调技术来分别降低偏置电流和失调电压。

The reason is that firstly , input stage adopts two key techniques : Bias-Current - Cancellation Technique , Offset Trimming Techniques .

运放设计过程中还分析和推导了噪声和失调电压，通过优化参数将噪声和失调电压降至最低。

The noise and offset voltage are also computed , by optimization of the parameter , noise and offset can be heavily reduced .

该转换器的高输入阻抗和低失调电压漂移输入增益级可以保证芯片在微弱电压信号下正常工作。

The designed converter could operate well with a slender supply voltage signal because of its high input resistance and low offset drift .

本文分析了直流失调电压以及时钟馈通现象产生的原因，并且结合具体的应用条件提出有针对性的解决方案。

The reasons of DC offset and clock feed-through are analyzed , and pertaining solutions are brought out according to given application conditions .