差分放大器 meaning in English
difference amplifier
differential amplifier
Examples
- For low distortion , the drains ( or collectors ) of a differential amp " s front - end should be bootstrapped to the source ( or emitter ) so that the voltages on the part are not modulated by the input signal
为了得到低失真，差分放大器前端的漏极（或集电极）应该被引导到源极（或射极） ，这样端口电压就不会被输入信号调制了。 - After pin ’ s noise and equivalent circuit are discussed , this thesis introduces technology and methods of signal management , including pre - amplifier and differential - amplifier , bpf , lia , etc . at the end of paper , the system of photoacoustic spectrometer is proved by experiment
本文在讨论了光电二极管的噪声和等效电路之后，介绍了信号处理的技术和方法，包括前置放大器、差分放大器和有源带通滤波器的设计及用于微弱信号检测的锁相放大技术。 - Two wedge interferometers are designed that the thickness of one is higher than the other . so when the incident coherent light through the interferometers can acquire two fringe patterns which having space shift , but the incident incoherent light only result in consistent intensity signal . through a differentiating amplifier , two signals subtract which can eliminate noise of background and result in higher contrast ratio fringe signals . this method largely improves the system and the ability of detection . the spacing of line fringes is a function of incident laser wavelength , by analyzing , we can extract the wavelength of incident laser . the optical unit analyzing and results also simulated with matlab
当背景光入射时，直接穿过干涉仪，仅发生强度的衰减，在两个探测平面上产生幅度基本一致的灰度信号，通过差分放大器，相消为零，从而抑制了背景干扰。当激光信号入射，穿过干涉仪时受到调制，在探测平面上产生干涉条纹。通过所设计的存在平均厚度差的双楔形干涉仪，两路干涉条纹图案出现相对移位：在两个探测平面对应的位置上，一路出现亮纹，另一路出现暗纹。 - In the paper a gmc filter with a cutoff frequency of 29 . 8mhz is implemented . an effective improvement is made in cmfb ( common mode feedback ) through using a differential amplifier with four inputs . transconductors are tuned through comparing two voltages , which helps to stabilize the cutoff frequency
文中实现了跨导电容滤波器，其截止频率达到29 . 8mhz ；采用四输入端的差分放大器使共模反馈得到了有效的改善；通过简单的电压比较实现跨导器的调谐，有助于稳定截止频率。 - The thesis has done the widespread investigation and study to the domestic and foreign ’ s technologies of analogy low voltage and low power , and analyzes the principles of work , merts and shortcomings of these technologies , based on the absorption of these technologies , it designs a 1 . 5v low power rail - to - rail cmos operational amplifier . when designing input stage , in order to enable the input common mode voltage range to achieve rail - to - rail , it does not use the traditional differential input pair , but use the nmos tube and the pmos tube parallel supplementary differential input pair to the structure , and uses the proportional current mirror technology to realize the constant transconductance of input stage . in the middle gain stage design , the current mirror load does not use the traditional standard cascode structure , but uses the low voltage , wide - swing casecode structure which is suitable to work in low voltage . when designing output stage , in order to enhance the efficiency , it uses the push - pull common source stage amplifier as the output stage , the output voltage swing basically reached rail - to - rail . the thesis changes the design of the traditional normal source based on the operational amplifier , uses the differential amplifier with current mirror load to design a normal current source . the normal current source provides the stable bias current and the bias voltage to the operational amplifier , so the stability of operational amplifier is guaranteed . the thesis uses the miller compensate technology with a adjusting zero resistance to compensate the operational amplifier
本论文对国内外的模拟低电压低功耗技术做了广泛的调查研究,分析了这些技术的工作原理和优缺点,在吸收这些技术成果基础上设计了一个1 . 5v低功耗轨至轨cmos运算放大器。在设计输入级时,为了使输入共模电压范围达到轨至轨,不是采用传统的差动输入结构,而是采用了nmos管和pmos管并联的互补差动输入对结构,并采用成比例的电流镜技术实现了输入级跨导的恒定;在中间增益级设计中,电流镜负载并不是采用传统的标准共源共栅结构,而是采用了适合在低压工作的低压宽摆幅共源共栅结构;在输出级设计时,为了提高效率,采用了推挽共源级放大器作为输出级,输出电压摆幅基本上达到了轨至轨;本论文改变传统基准源基于运放的设计,采用了带电流镜负载的差分放大器设计了一个基准电流源,给运放提供稳定的偏置电流和偏置电压,保证了运放的稳定性;并采用了带调零电阻的密勒补偿技术对运放进行频率补偿。