PCM4222_07 Datasheet, PDF (12/40 Pages) Burr-Brown (TI) – High-Performance, Two-Channel, 24-Bit, 216kHz Sampling Multi-Bit Delta-Sigma Analog-to-Digital Converter

PCM4222
SBAS399A – OCTOBER 2006 – REVISED MARCH 2007
TYPICAL CHARACTERISTICS (continued)
At T_A = +25°C, VCC1 = VCC2 = +4.0V, and VDD = +3.3V, unless otherwise noted.
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FFT PLOT
FFT PLOT
0
f_S = 192kHz
-20 _{fIN = 997Hz, -60dB}
-40
0
-20
f_S = 192kHz
Idle Channel (no input)
-40
-60
-60
-80
-80
-100
-100
-120
-120
-140
-140
-160
-160
-180
-180
20
100
1k
10k
96k
20
100
1k
10k
96k
Frequency (Hz)
Frequency (Hz)
Figure 17.
Figure 18.
THD+N vs INPUT FREQUENCY
-60
f_S = 192kHz
-70 ^{Input Amplitude = -1dB}
BW = 22Hz to 80kHz
-80
-90
-100
-110
-120
-130
20
100
1k
10k
80k
Input Frequency (Hz)
Figure 19.
THD+N vs INPUT AMPLITUDE
-60
f_S = 192kHz
-70 f_IN = 997Hz
BW = 22Hz to 80kHz
-80
-90
-100
-110
-120
-130
-140 -120 -100 -80 -60 -40 -20
0
Input Amplitude (dB)
Figure 20.
CHANNEL SEPARATION vs INPUT FREQUENCY
0
f_S = 192kHz
-20
Left Channel
-40
Right Channel
-60
-80
-100
-120
-140
-160
-180
-200
0
10 20 30 40 50 60 70 80
Input Frequency (kHz)
Figure 21.
0
f_S = 192kHz
-20
LINEARITY
-40
-60
-80
-100
-120
-140
-140 -120 -100 -80 -60 -40 -20
0
Input Amplitude (dB)
Figure 22.
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