PCM1794A
www.ti.com.cn
ZHCSEE9B –AUGUST 2004–REVISED DECEMBER 2015
Typical Characteristics (continued)
132
130
130
128
126
124
122
120
f
= 96 kHz
S
128
126
124
122
f
S
= 192 kHz
f = 48 kHz
S
f
S
= 48 kHz
f
S
= 192 kHz
f
S
= 96 kHz
−50
−25
0
25
50
75
100
−50
−25
0
T – Free-Air Temperature – °C
A
25
50
75
100
T
– Free-Air Temperature – °C
A
VCC = 5 V
VDD = 3.3 V
VOUT = 4.5 VRMS
Measurement circuit is Figure 26.
Figure 16. Signal-to-Noise Ratio vs Free-Air Temperature
Figure 17. Channel Separation vs Free-Air Temperature
0
0
−20
−40
−20
−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
VCC = 5 V
TA = 25°C
Measurement circuit is Figure 26
VCC = 5 V
TA = 25°C
Measurement circuit is Figure 26
VDD = 3.3 V
fS = 48 kHz, 32768 point 8
average
VDD = 3.3 V
fS = 48 kHz, 32768 point 8
average
Figure 18. Amplitude vs Frequency
Figure 19. Amplitude vs Frequency
–60-db Output Spectrum, BW = 20 kHz
–60-db Output Spectrum, BW = 100 kHz
10
1
0.1
0.01
0.001
0.0001
−100
−80
−60
−40
−20
0
Input Level – dBFS
VCC = 5 V
Measurement circuit is Figure 26
fS = 48 kHz, TA = 25°C
VDD = 3.3 V
Figure 20. Total Harmonic Distortion + Noise vs Input Level
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11
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