AMC1204-Q1_15 Datasheet, PDF (9/33 Pages) Texas Instruments – 20 MHz, Second-Order, Isolated Delta-Sigma Modulator for Current-Shunt Measurement

AMC1204-Q1
www.ti.com
SLAS886B – JULY 2012 – REVISED JANUARY 2013
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.
GAIN ERROR vs ANALOG SUPPLY VOLTAGE
2
GAIN ERROR vs TEMPERATURE
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)
Figure 8.
−2
5.5
−40 −25 −10 5 20 35 50 65 80 95 110 125
Temperature (°C)
Figure 9.
GAIN ERROR vs CLOCK FREQUENCY
2
1.5
1
0.5
0
−0.5
−1
−1.5
−2
5
10
15
20
25
Clock Frequency (MHz)
Figure 10.
GAIN ERROR vs CLOCK DUTY CYCLE
2
1.5
1
0.5
0
−0.5
−1
−1.5
−2
40
45
50
55
60
Clock Duty Cycle (%)
Figure 11.
POWER-SUPPLY REJECTION RATIO
vs FREQUENCY
100
90
COMMON-MODE REJECTION RATIO
vs INPUT SIGNAL FREQUENCY
140
Unfiltered
sinc3, OSR = 256
130
120
80
110
100
70
90
60
0.1
1
10
Frequency (kHz)
Figure 12.
80
100
0.1
1
10
100
1000
Input Signal Frequency (kHz)
Figure 13.
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