AMC1203_15 Datasheet, PDF (10/29 Pages) Texas Instruments – 1-Bit, 10MHz, 2nd-Order, Isolated Delta-Sigma Modulator

AMC1203
SBAS427C – FEBRUARY 2008 – REVISED JUNE 2011
www.ti.com
TYPICAL CHARACTERISTICS (continued)
At V_DD1 = V_DD2 = 5V, V_IN+ = –280mV to +280mV, V_IN– = 0V, and sinc³ filter with OSR = 256, unless otherwise noted.
SIGNAL-TO-NOISE RATIO
SIGNAL-TO-NOISE RATIO
vs INPUT SIGNAL AMPLITUDE
vs TEMPERATURE
100
90
f_IN = 500Hz
89
90
88
80
87
70
86
85
60
84
50
83
82
40
81
30
1
10
100
V_IN (mV_PP)
1000
80
-40 -25 -10 5
20 35 50 65 80 95 110 125
Temperature (°C)
Figure 9.
Figure 10.
SIGNAL-TO-NOISE RATIO
vs INPUT SIGNAL FREQUENCY
110
105
100
95
90
85
80
75
70
100
1k
10k
f_IN (Hz)
Figure 11.
SIGNAL-TO-NOISE RATIO
vs TEMPERATURE
90
f_IN = 1kHz
89
88
87
86
85
84
83
82
81
80
-40 -25 -10 5
20 35 50 65 80 95 110 125
Temperature (°C)
Figure 12.
TOTAL HARMONIC DISTORTION
vs INPUT SIGNAL FREQUENCY
-80
-85
-90
-95
-100
-105
-110
100
1k
10k
f_IN (Hz)
Figure 13.
TOTAL HARMONIC DISTORTION
vs TEMPERATURE
-80
-85
-90
-95
-100
-105
-110
-40 -25 -10 5
20 35 50 65 80 95 110 125
Temperature (°C)
Figure 14.
10
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