Dac performance plots, Figure 35. fft (48 khz, 0 db), Figure 36. fft (48 khz, -60 db) – Cirrus Logic CDB4270 User Manual
Page 31: Figure 37. fft (48 khz, no input), Figure 38. fft (48 khz out-of-band, no input), Figure 39. 48 khz, thd+n vs. input freq, Figure 40. 48 khz, thd+n vs. level
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DS686DB3
31
CDB4270
9. DAC PERFORMANCE PLOTS
-150
+0
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
d
B
r
A
20
20k
50
100
200
500
1k
2k
5k
10k
Hz
-150
+0
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
d
B
r
A
20
20k
50
100
200
500
1k
2k
5k
10k
Hz
Figure 35. FFT (48 kHz, 0 dB)
Figure 36. FFT (48 kHz, -60 dB)
-150
+0
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
d
B
r
A
20
20k
50
100
200
500
1k
2k
5k
10k
Hz
-150
+0
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
d
B
r
A
20k
120k
40k
60k
80k
100k
Hz
Figure 37. FFT (48 kHz, No Input)
Figure 38. FFT (48 kHz Out-of-Band, No Input)
-110
+0
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
d
B
r
A
20
20k
50
100
200
500
1k
2k
5k
10k
Hz
-110
+0
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
d
B
r
A
-120
+0
-100
-80
-60
-40
-20
dBFS
Figure 39. 48 kHz, THD+N vs. Input Freq
Figure 40. 48 kHz, THD+N vs. Level
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