AMC1204_15 Datasheet, PDF (11/37 Pages) Texas Instruments – AMC1204 20-MHz, Second-Order, Isolated Delta-Sigma Modulator

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AMC1204, AMC1204B
SBAS512E – APRIL 2011 – REVISED SEPTEMBER 2015
Typical Characteristics (continued)
At AVDD = 5 V, DVDD = 3.3 V, VINP = –250 mV to 250 mV, VINN = 0 V, and sinc³ filter with OSR = 256, unless otherwise
noted.
2
2
1.5
1.5
1
1
0.5
0.5
0
0
−0.5
−0.5
−1
−1
−1.5
−1.5
−2
4.5
5
AVDD (V)
−2
5.5
−40 −25 −10 5 20 35 50 65 80 95 110 125
Temperature (°C)
Figure 8. Gain Error vs Analog Supply Voltage
2
1.5
1
0.5
0
−0.5
−1
−1.5
−2
5
10
15
20
25
Clock Frequency (MHz)
Figure 9. Gain Error vs Temperature
2
1.5
1
0.5
0
−0.5
−1
−1.5
−2
40
45
50
55
60
Clock Duty Cycle (%)
Figure 10. Gain Error vs Clock Frequency
100
90
80
70
60
0.1
1
10
100
Frequency (kHz)
Figure 11. Gain Error vs Clock Duty Cycle
140
Unfiltered
sinc3, OSR = 256
130
120
110
100
90
80
0.1
1
10
100
Input Signal Frequency (kHz)
1000
Figure 12. Power-Supply Rejection Ratio vs Frequency
Figure 13. Common-Mode Rejection Ratio vs Input Signal
Frequency
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