Cs8421 – Cirrus Logic CS8421 User Manual
Page 28

28
DS641F6
CS8421
-150
-120
-147.5
-145
-142.5
-140
-137.5
-135
-132.5
-130
-127.5
-125
-122.5
d
B
F
S
50k
175k
75k
100k
125k
150k
Hz
-150
-120
-147.5
-145
-142.5
-140
-137.5
-135
-132.5
-130
-127.5
-125
-122.5
d
B
F
S
50k
175k
75k
100k
125k
150k
Hz
Figure 39. THD+N vs. Output Sample Rate, 0 dBFS
1 kHz Tone, Fsi = 48 kHz
-150
-120
-147.5
-145
-142.5
-140
-137.5
-135
-132.5
-130
-127.5
-125
-122.5
d
B
F
S
50k
175k
75k
100k
125k
150k
Hz
-145
-135
-144
-143
-142
-141
-140
-139
-138
-137
-136
d
B
F
S
50k
175k
75k
100k
125k
150k
Hz
Figure 41. THD+N vs. Output Sample Rate, 0 dBFS
1 kHz Tone, Fsi = 44.1 kHz
-150
-120
-147.5
-145
-142.5
-140
-137.5
-135
-132.5
-130
-127.5
-125
-122.5
d
B
F
S
50k
175k
75k
100k
125k
150k
Hz
-150
-120
-147.5
-145
-142.5
-140
-137.5
-135
-132.5
-130
-127.5
-125
-122.5
d
B
F
S
50k
175k
75k
100k
125k
150k
Hz
Figure 43. THD+N vs. Output Sample Rate, 0 dBFS
1 kHz Tone, Fsi = 32 kHz
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