本文中详细给出了运放器件低频噪声的测试方法并对测试过程中的若干关键问题进行了深入剖析。
This paper presents a detailed discussion of the method for measuring low frequency noise in operational amplifier devices as well as an analysis of some key problems in the measuring process.
本文阐明了低频低噪声运放XD1531的设计原理。
The design principle is described for low frequency integrated operational amplifier XD1531 with low noise.
但这种情形对于敏感运放的输入端晶体管是极为不利的。
But this situation is unhealthy for sensitive op-amp input transistors.
考虑了在不同信号激励下运放所呈现的线性和非线性响应；
The linear and nonlinear responses of OAs under the drive of different signal levels are considered.
根据实际要求，提出了高速运放调理和高速电子开关两种方案。
According to the practical requirements, two schemes, i. e. high-speed operational amplifier and high-speed electronic switch are proposed.
该有源滤波器基于电流检测、电流补偿的原理，以高速运放为核心。
The proposed filter is based on the current sensing and compensation circuit and it utilizes a fast amplifier for the current compensation.
对运放参数测试的自动校零方法、测试主回路的闭环稳定性进行了研究。
This paper describes the automatic null-setting method for Op-Amp parameters measurement and the stability of the main measurement loop.
该电路采用三运放结构，具有良好的性能，文中给出了相关的测试结果；
This electrocircuit has three amplifiers and gains good performance. The relevant sampling result is also presented.
但集成运放带宽有限，所以目前的有源滤波电路的工作频率难以做得很高。
But the integrated operational amplifier bandwidth is limited, so the current active filter circuit is difficult to do very high operating frequencies.
当大部分JFET运放的输入超过它的共模范围时，输出可能发生极性翻转。
When inputs to most JFET op amps exceed the common-mode range for the part, the output may reverse polarity.
热电阻传感器、电桥电路、单电源运放、单片计算机、动磁线圈依次电连接；
The thermal resistance temperature sensor, the electric-bridge circuit, the single power supply op amp, the monolithic computer and the moving magnetic coil are electrically connected in sequence.
按本文所提出的设计步骤，既可选出满足给定指标的运放，又可使级数降到最少。
With this procedure, appropriate operational amplifier can be selected to meet a given specifications and the number of stages can be minimised.
在设计中还采用了共源共栅两级运放和差分动态比较器来优化电路的速度和功耗。
The cascode two -stage op -amp and differential dynamic comparator are also used to optimize the speed and power dissipation.
电路运用带隙温度补偿技术，采用共源共栅电流镜，两级运放输出用于自身偏置电路。
The technology of temperature compensation and cascade current mirror was used, and the output of two stage amplifier was used for the bias of itself.
有源滤波器基本上由集成运放和R、C组成，具有不用电感、体积小、重量轻等优点。
Active filter is basically an integrated operational amplifier, and r, c, has a no inductance, small size, light weight and so on.
运放参数主测试电路采用辅助放大器测试法设计，通过相位补偿网络消除电路自激现象。
The main test circuit adopts the auxiliary amplifier method with phase compensation circuits in order to avoid self-excitation.
在对输出级的功能和稳定性作了分析计算后，设计了一种高增益、低失真的运放（OP）电路。
On the basis of analysis of the output stage function and stability, an operational amplifier (OP) with high gain and low distortion is designed.
本文讨论了使用跨导运放(OTA)和电容(C)实现跳耦结构的有源滤波器，给出了电路设计公式。
In this paper, a realization of active continuous time OTA-C filter with leapfrog structure is discussed and the formulas of circuit design are give.
分析了复合运放提高性能的原理，利用两运算放大器设计了高性能复合放大器，以构成理想的积分电路。
By analyzing the principle of compound operational amplifier, a high performance amplifier is designed by using two operational amplifiers, so an idea integrator is achieved.
数模转换器、模拟集成滤波器、基准电压源和高驱动能力运放等电路是通信系统中不可缺少的基本电路。
Digital to analog converter, analog integrated filter, bandgap reference and high drive capability operational amplifier are indispensability basic circuit of communication system.
通过对常用的测量共模抑制比的方法的分析，提出了一种高精度的简便的测量运放的共模抑制比的方法。
This paper analyses the common way of measuring CMRR, and proposes a simple and highly sophisticated method of measuring CMRR of Operational Amplifier Circuit.
采用运放单电源供电电路，实现成本低廉，结构简单，性能优越的设计，可广泛应用于低功耗医疗仪器设备。
Adopting single supply operator amplifier, the design realizes low cost, simple construction and superior capability. It can be widely used in low power medical instruments.
同时运用自动调零技术，克服了线性基准的失调缺陷，消除了运放的失调电压，提高了输出电压的失调精度。
And the technology of auto-zero is used to overcome the offset disadvantage of linear reference and cancel the offset voltage of amplifier.
本文介绍一种利用示波器，对由双运放组成的有源滤波器的二阶节电路的零、极点进行准确调整的相位调试法。
In this paper the phase tuning methods by using oscilloscope for the tuning of the pole and zero of the two—amplifier biquads are given.
在接下来的噪声视频中，我们将会学习如何使用运放噪声模型来估计在不同的运放配置下总的输出峰峰值噪声。
In the following videos discussing noise, we will learn how to use the op amp noise model to predict the total peak-to-peak output noise for different amplifier configurations.
文中通过对各类型集成运算放大器的特性的研究，建立了一种适合于各类型集成运放的时域特性分析的非线性宏模型。
In this paper, a nonlinear macromodel for all types of Integrated Circuit Operational Amplifiers (IC OP-Amps) is developed through studying the characteristics of all types of IC OP-Amps.
虽然节点都是以标准电压拓扑为目标，但是运放可以使其与微弱的电流敏感电压及有些许不同的电流拓扑结构相匹配。
Although that node targets the topology of a standard voltage regulator, the op amp matches it to the much smaller current-sense voltage and the slightly different topology of a current regulator.
本文针对小信号情况下运放有限增益和有限带宽对开关电容网络的影响，提出了利用离散域运放宏模型分析此问题的方法。
In this paper, the effects of the Op · Amp finite gain and bandwidth on the performance of sc networks in small signal are discussed and a method using Z-domain Op · Amp macromodel is presented.
其设计特点是采用了共源共栅电流镜，运放的输出作为驱动的同时还作为自身的偏置电路；其次是采用了带隙温度补偿技术。
The cascade current mirror was used in the circuit, and the output of the OPAMP was used for the bias of itself and to drive the next stage.
本文介绍了静电计专用集成运放ad515a的结构特点，并且提出了一种基于AD515A的高精度实时测量累计电压的方法。
AD515A, the special electrometer operational amplifier, is introduced in this paper. And we proposed one high accuracy real-time measurement accumulation voltage method based on AD515A.
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