A High Impedance Operational Module with Low Input Offset Voltage Drift 高阻抗低漂移运算功能块
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;
Experimental results show that the device can precisely measure many parameters of IOA, such as input offset voltage, input offset current, open loop differential AC voltage gain and AC common mode rejection ratio. 实验结果表明该测试仪能准确测量运算放大器的输入失调电压、输入失调电流、交流差模开环电压增益和交流共模抑制比等参数。
The equivalent input noise voltage, offset voltage drift, common mode rejection, power source rejection and other characteristics of a common source-common grid cascade amplifier is analysed in detail. 本文对一种共源-共栅串接差分输入级运算放大器的等效输入噪声电压、失调电压温漂、共模抑制比和电源电压抑制比等参数进行了详细的分析。
This paper analyses the factors that effect the input offset voltage V_ ( os) and temperature drift the IC operational amplifier. 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((?)
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. 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。
We also analyze the effect of input noise voltage and current, input offset voltage and current of the operational amplifier, and the noise of the silicon photodiode on the combined circuit of the operational amplifier with the silicon photodiode. 分析了运算放大器的噪声电压、噪声电流、失调电压、失调电流和硅光电二极管的噪声因素对硅光电二极管与运算放大器组合电路的影响。
Through in-depth analysis of the causes of ripple, find out that the main factor affecting the ripple is the input offset voltage of error amplifier circuit in the prior to circuit. And by theoretical calculation the optimal value of the input offset voltage is obtained. 通过深入分析纹波产生的原因,指出影响纹波的主要因素是前向电路中误差放大电路的输入失调电压,并通过理论计算获得了输入失调电压的最优值。
Based on the analysis of offset voltage, this paper proposed a new low offset voltage sense amplifier which balanced the discharge speed of the internal nodes by adding two fine-tuning way in order to achieve the purpose of reducing the sense amplifier input offset voltage. 在失调电压分析的基础上,提出了一种新的低失调电压的灵敏放大器,通过增加两条微调之路来平衡灵敏放大器的内部节点的放电速度,以达到降低灵敏放大器输入失调电压的目的。