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CMOS Mixed Signal Design - Part I: OpAmp Design
CMOS Mixed Signal Design - Part I: OpAmp Design

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... and OA2 from the balanced stage (OA3 along with R1, R2, R3, and R4). In this circuit, ZCM- = Ri1, and ZCM+ = Ri2. To retain 90 dB CMRR in the face of a 10 Ω mismatch in source impedance would require Ri1 and R i2 to be > 317 kΩ. Of course, any difference in the values of Ri1 and Ri2 themselves would ...
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SN65LVDS33 数据资料 dataSheet 下载

... The receivers can withstand ±15 kV human-body model (HBM) and ±600 V machine model (MM) electrostatic discharges to the receiver input pins with respect to ground without damage. This provides reliability in cabled and other connections where potentially damaging noise is always a threat. The receiv ...
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... the measurement of low frequency signal power in fiber optic systems. It uses an advanced translinear technique to provide an exceptionally large dynamic range in a versatile and easily used form. Its wide measurement range and accuracy are achieved using proprietary design techniques and precise la ...
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Negative feedback



Negative feedback occurs when some function of the output of a system, process, or mechanism is fed back in a manner that tends to reduce the fluctuations in the output, whether caused by changes in the input or by other disturbances.Whereas positive feedback tends to lead to instability via exponential growth, oscillation or chaotic behavior, negative feedback generally promotes stability. Negative feedback tends to promote a settling to equilibrium, and reduces the effects of perturbations. Negative feedback loops in which just the right amount of correction is applied with optimum timing can be very stable, accurate, and responsive.Negative feedback is widely used in mechanical and electronic engineering, but it also occurs naturally within living organisms, and can be seen in many other fields from chemistry and economics to physical systems such as the climate. General negative feedback systems are studied in control systems engineering.
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