Performance plots, Figure 1. fft (48 khz, 0 db), Figure 2. fft (48 khz, -60 db) – Cirrus Logic CDB4353 User Manual
Page 7: Figure 3. fft (48 khz, no input), Figure 4. fft (48 khz out-of-band, no input), Figure 5. 48 khz, thd+n vs. input freq, Figure 6. 48 khz, thd+n vs. level
DS803DB2
7
CDB4353
11.PERFORMANCE PLOTS
Test conditions (unless otherwise specified): TA = 25°C; VCP = VA = VL = 3.3 V; AGND = DGND =CPGND = 0 V;
OPT1 S/PDIF input source; PCM data Left-Justified format; 2 V
RMS
output; De-emphasis off; input test signal is a
997 Hz sine wave at 0 dBFS; dB values relative to 2.1 V
RMS
full-scale output; measurement bandwidth 10 Hz to
20 kHz. CDB4353 revision A3 with CS4353 revision B1 used.
-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 1. FFT (48 kHz, 0 dB)
Figure 2. 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 3. FFT (48 kHz, No Input)
Figure 4. 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 5. 48 kHz, THD+N vs. Input Freq
Figure 6. 48 kHz, THD+N vs. Level