Datasheet

0.01
0.1
1
10
THD
+N
(%)
0.02
0.2
2
0.05
0.5
5
10m
INPUT VOLTAGE (V
RMS
)
1m
2m 50m
100m 500m 2
5m 20m
1200m
20 100 1k 10k 20k
0.001
0.01
0.1
1
10
THD+
N (%)
FREQUENCY (Hz)
0.002
0.02
0.2
2
0.005
0.05
0.5
5
50 200 2k500 5k
1k20
FREQUENCY (Hz)
MAGNITUDE (dB)
100 2k200 500 4k50
+0
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
20 100 1k 10k 20k
0.001
0.01
0.1
1
10
THD+
N (%)
FREQUENCY (Hz)
0.002
0.02
0.2
2
0.005
0.05
0.5
5
50 200 2k500 5k
1k20
FREQUENCY (Hz)
MAGNITUDE (dB)
100 2k200 500 4k50
+1
-3
+0.5
-0
-0.5
-1
-1.5
-2
-2.5
20 20k
FREQUENCY (Hz)
-100
+0
MAGNITUDE (dB)
10k1k 2k 5k50 100 200 500
-90
-80
-70
-60
-50
-40
-30
-20
-10
LM49350, LM49350RLEVAL
SNAS359D –SEPTEMBER 2008–REVISED JUNE 2012 www.ti.com
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Mono Voice ADC HPF Frequency Response
f
S
= 48kHz, OSR = 128, C
IN
= 1μF, MIC gain = 6dB
(Top-No HPF)
Mono Voice ADC Frequency Response (From Left to Right:
f
S
= 8kHz, OSR = 128, C
IN
= 1μF, MIC gain = 6dB HPF_Mode = '000', '001', '010', '011', '100')
Figure 15. Figure 16.
Mono Voice ADC HPF Frequency Response
f
S
= 8kHz, OSR = 128, C
IN
= 1μF, MIC gain = 6dB
(Top-No HPF) ADC Output THD+N vs Frequency
(From Left to Right: Differential Line Input, Aux Gain = 0dB
HPF_Mode = '000', '001', '010', '011', '100') V
IN
= 200mV
RMS
, f
S
= 48kHz
Figure 17. Figure 18.
ADC Output THD+N vs Frequency ADC Output THD+N vs V
IN
Differential MIC Input, MIC Gain = 6dB Differential Line Input, Aux Gain = 0dB
V
IN
= 100mV
RMS
, f
S
= 48kHz V
IN
= 1kHz, f
S
= 48kHz
Figure 19. Figure 20.
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