ꢀ ꢁꢂ ꢃ ꢄ ꢅ ꢆ
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SLES080B – MAY 2003 – REVISED NOVEMBER 2003
AMPLITUDE
vs
AMPLITUDE
vs
FREQUENCY
FREQUENCY
0
0
−20
−20
−40
−40
−60
−60
−80
−80
−100
−120
−140
−160
−180
−100
−120
−140
−160
0
2
4
6
8
10 12 14 16 18 20
0
10 20 30 40 50 60 70 80 90 100
f – Frequency – kHz
f – Frequency – kHz
NOTE: f = 48 kHz, 32768 point 8 average, T = 25°C, V
= 3.3 V,
NOTE: f = 48 kHz, 32768 point 8 average, T = 25°C, V
= 3.3 V,
S
A
DD
S
A
DD
V
CC
= 5 V, measurement circuit is Figure 25.
V
CC
= 5 V, measurement circuit is Figure 25.
Figure 15. –60-db Output Spectrum, BW = 20 kHz
Figure 16. –60-db Output Spectrum, BW = 100 kHz
TOTAL HARMONIC DISTORTION + NOISE
vs
INPUT LEVEL
10
1
0.1
0.01
0.001
0.0001
−100
−80
−60
−40
−20
0
Input Level – dBFS
NOTE: f = 48 kHz, T = 25°C, V
DD
= 3.3 V, V
CC
= 5 V,
S
A
measurement circuit is Figure 25.
Figure 17. THD+N vs Input Level
12
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