Cirrus Logic CDB5343 - Manual (Page 13)

DS68
7DB2
13
CDB5343
13.2 FFTlm
Figure 18 shows a typical FFT of the output from the CS5343 on the CDB5343 with a 2 Vrms, 1 kHz sinewave input. For this plot, the device was
configured for Single-Speed Mode with VA = 5 V.
Figure 18. FFT from CDB5343 Output
Color Sweep Trace Line Style Thick Data Axis Comment
1 1 Blue Solid 1 Fft.Ch.1 Ampl Left
1 2 Red Solid 1 Fft.Ch.2 Ampl Right
-180
+0
-170
-160
-150
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
d
B
F
S
-180
+0
-170
-160
-150
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
d
B
F
S
20 20k 50 100 200 500 1k 2k 5k 10k
Hz
CS5343 FFT, 1 kHz Full-scale Input, VA = 5 V, SSM Master Mode