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4. [20%] Consider the voltage noise of AD795 shown below. Its corner frequency is 12 Hz and the white noise is 8 nV/ ÖHz. Calculate B value of 1/f noise using the corner frequency. Hint: at corner frequency, 1/f noise is equal to the white noise. VOTAGE NOISE DENSITY CURRENT HOUSE DENSITY C FREQUENCY P FREQUENCY Figure 4-49: AD795 Voltage and current noise density performance

Fig: 1