2 fftlm, Figure 18. fft from cdb5343 output, Cdb5343 – Cirrus Logic CDB5343 User Manual
Page 13
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DS68
7DB2
13
CDB5343
13.2
FFTlm
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
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