AMC1204_14 Datasheet, PDF (13/37 Pages) Texas Instruments – 20MHz, Second-Order, Isolated Delta-Sigma Modulator for Current-Shunt Measurement

AMC1204
AMC1204B
www.ti.com
SBAS512D – APRIL 2011 – REVISED DECEMBER 2013
TYPICAL CHARACTERISTICS (continued)
At AVDD = 5V, DVDD = 3.3V, VINP = –250mV to +250mV, VINN = 0V, and sinc³ filter with OSR = 256, unless otherwise
noted.
FREQUENCY SPECTRUM
(4096 point FFT, f_IN = 1kHz, 056V_PP)
0
FREQUENCY SPECTRUM
(4096 point FFT, f_IN = 5kHz, 056V_PP)
0
-20
-20
-40
-40
-60
-60
-80
-80
-100
-100
-120
-120
-140
0
5 10 15 20 25 30 35 40
Frequency (kHz)
Figure 32.
-140
0
5 10 15 20 25 30 35 40
Frequency (kHz)
Figure 33.
ANALOG SUPPLY CURRENT
vs ANALOG SUPPLY VOLTAGE
16
14
12
10
8
6
4
2
0
4.5
5
5.5
AVDD (V)
Figure 34.
ANALOG SUPPLY CURRENT vs TEMPERATURE
16
14
12
10
8
6
4
2
0
−40 −25 −10 5
20 35 50 65 80 95 110 125
Temperature (°C)
Figure 35.
ANALOG SUPPLY CURRENT vs CLOCK FREQUENCY
16
14
12
10
8
6
4
2
0
5
10
15
20
25
Clock Frequency (MHz)
Figure 36.
DIGITAL SUPPLY CURRENT
vs DIGITAL SUPPLY VOLTAGE (3V)
16
14
12
10
8
6
4
2
0
2.7
3
3.3
3.6
DVDD (V)
Figure 37.
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