AMC1204_15 Datasheet, PDF (15/37 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.
0
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)
-140
0
5 10 15 20 25 30 35 40
Frequency (kHz)
Figure 32. Frequency Spectrum (4096 Point FFT, f_IN = 1 kHz,
0.56 V_PP)
16
14
12
10
8
6
4
2
0
4.5
5
5.5
AVDD (V)
Figure 33. Frequency Spectrum (4096 Point FFT, f_IN = 5 kHz,
0.56 V_PP)
16
14
12
10
8
6
4
2
0
−40 −25 −10 5
20 35 50 65 80 95 110 125
Temperature (°C)
Figure 34. Analog Supply Current vs Analog Supply Voltage
16
14
12
10
8
6
4
2
0
5
10
15
20
25
Clock Frequency (MHz)
Figure 35. Analog Supply Current vs Temperature
16
14
12
10
8
6
4
2
0
2.7
3
3.3
3.6
DVDD (V)
Figure 36. Analog Supply Current vs Clock Frequency
Figure 37. Digital Supply Current vs Digital Supply Voltage
(3 V)
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