Table 1. Characteristics of intrinsic and extrinsic noises.

Characteristics	Intrinsic noise	Extrinsic noise
Noise to gain
Noise to output
Dominant frequency	Higher	Lower

The dependence of noise intensity on the gain and output signal intensity are shown in the first two rows. The intrinsic noise dominates higher-frequency noise, whereas the extrinsic noise dominates low-frequency noise, as shown in the third row.