INTRINSIC DARK NOISE HOW TO

We will soon learn how to combine the effects of all the noise sources to determine the total output noise. The magnitude of the noise associated with the resistor is dependent on the resistance value, and can be calculated. The magnitude of the noise sources inside the amplifier is given in the amplifier's data sheet. The noise current source is denoted by a diamond with an asterisk inside. The amplifier also has a noise voltage source, and a noise current source. The noise voltage source is denoted by a circle with an asterisk inside. Each resistor has a noise voltage source associated with it. This slide illustrates how an amplifier circuit can be translated into a noise equivalent circuit. We will also discuss techniques for reducing noise. As we mentioned before, our discussion will focus on how to calculate, simulate and measure noise. In this noise video series we will focus on intrinsic noise. Whereas extrinsic noise is typically difficult to predict. Resistors and semiconductor devices, for example, generate noise. Intrinsic noise is caused by components within a circuit. Cosmic radiation is another example of a natural phenomenon that causes extrinsic noise. For example, 60 hertz powerline noise and interference from mobile phones are common examples of extrinsic noise. Extrinsic noise is noise produced from some external circuit or natural phenomena. Noise can be categorized into two basic groups, extrinsic and intrinsic. In a sensor system, noise can be an error in the measured sensor output, such as pressure or temperature. In audio, for example, noise can be noticed as a hiss or a popping sound. Noise can be defined as an unwanted signal that combines with the desired signal to result in an error. In part 1, we will define intrinsic noise, introduce the different types of noise, and discuss noise spectral density. Overall, this video series on noise will show how to predict op amp noise with calculation and simulation, as well show how to accurately measure noise. And welcome to the TI Precision Lab, Discussing intrinsic Op Amp Noise, Part 1.

Intrinsic dark noise