AMC1204 Datasheet, PDF (8/29 Pages) Texas Instruments – 20MHz, Second-Order, Isolated Delta-Sigma Modulator for Current-Shunt Measurement

AMC1204
SBAS512A – APRIL 2011 – REVISED APRIL 2011
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TYPICAL CHARACTERISTICS
At AVDD = 5V, DVDD = 3.3V, VINP = –250mV to +250mV, VINN = 0V, and sinc³ filter with OSR = 256, unless otherwise
noted.
INTEGRAL NONLINEARITY
vs INPUT SIGNAL AMPLITUDE
8
7
6
5
4
3
2
1
0
−250 −200 −150 −100 −50 0 50 100 150 200 250
Input Signal Amplitude (mV)
Figure 2.
INTEGRAL NONLINEARITY vs TEMPERATURE
16
14
12
10
8
6
4
2
0
−2
−4
−6
−8
−10
−12
−14
−16
−40 −25 −10 5
20 35 50 65 80 95 110 125
Temperature (°C)
Figure 3.
OFFSET ERROR
vs ANALOG SUPPLY VOLTAGE
1
0.8
0.6
0.4
0.2
0
−0.2
−0.4
−0.6
−0.8
−1
4.5
5
5.5
AVDD (V)
Figure 4.
OFFSET ERROR vs TEMPERATURE
1
0.8
0.6
0.4
0.2
0
−0.2
−0.4
−0.6
−0.8
−1
−40 −25 −10 5
20 35 50 65 80 95 110 125
Temperature (°C)
Figure 5.
OFFSET ERROR vs CLOCK FREQUENCY
1
0.8
0.6
0.4
0.2
0
−0.2
−0.4
−0.6
−0.8
−1
5
10
15
20
25
Clock Freuency (MHz)
Figure 6.
OFFSET ERROR vs CLOCK DUTY CYCLE
1
0.8
0.6
0.4
0.2
0
−0.2
−0.4
−0.6
−0.8
−1
40
45
50
55
60
Clock Duty Cycle (%)
Figure 7.
8
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