
DSD1792
SLES067B MARCH 2003 REVISED NOVEMBER 2006
www.ti.com
13
Figure 19. –60-db Output Spectrum, BW = 20 kHz
f – Frequency – kHz
180
160
140
120
100
80
60
40
20
0
2
4
6
8
1012
141618
20
Amplitude
–
dB
AMPLITUDE
vs
FREQUENCY
Figure 20. –60-db Output Spectrum, BW = 100 kHz
f – Frequency – kHz
160
140
120
100
80
60
40
20
0
102030
405060
708090
100
Amplitude
–
dB
AMPLITUDE
vs
FREQUENCY
NOTE: PCM mode, fS = 48 kHz, 32,768 point 8 average, TA = 25°C, VDD = 3.3 V, VCC = 5 V, measurement circuit is Figure 34.
Figure 21. THD+N vs Input Level, PCM Mode
100
80
60
40
20
0
Input Level – dBFS
TOTAL HARMONIC DISTORTION + NOISE
vs
INPUT LEVEL
10
0.1
0.01
0.001
0.0001
THD+N
–
T
otal
Harmonic
Distortion
+
Noise
–
%
1
NOTE: PCM mode, fS = 48 kHz, TA = 25°C, VDD = 3.3 V, VCC =5V, measurement circuit is Figure 34.