AMC1204_1108 Datasheet, PDF (10/30 Pages) Texas Instruments – 20MHz, Second-Order, Isolated Delta-Sigma Modulator for Current-Shunt Measurement

AMC1204
SBAS512B – APRIL 2011 – REVISED AUGUST 2011
www.ti.com
TYPICAL CHARACTERISTICS (continued)
At AVDD = 5V, DVDD = 3.3V, VINP = –250mV to +250mV, VINN = 0V, and sinc³ filter with OSR = 256, unless otherwise
noted.
SINAD AND SNR vs ANALOG SUPPLY VOLTAGE
SINAD AND SNR vs TEMPERATURE
100
SINAD
SNR
100
SINAD
SNR
90
90
80
80
70
70
60
4.5
5
5.5
AVDD (V)
Figure 14.
SINAD AND SNR vs INPUT SIGNAL FREQUENCY
100
SINAD
SNR
90
80
70
60
0.1
1
10
100
Input Signal Frequency (kHz)
Figure 16.
SINAD AND SNR vs CLOCK FREQUENCY
100
SINAD
SNR
90
60
−40 −25 −10 5
20 35 50 65 80 95 110 125
Temperature (°C)
Figure 15.
SINAD AND SNR vs INPUT SIGNAL AMPLITUDE
100
SINAD
90
SNR
80
70
60
50
40
30
20
10
0
0.1
1
10
100
1000
Input Signal Amplitude (mVpp)
Figure 17.
SINAD AND SNR vs CLOCK DUTY CYCLE
100
SINAD
SNR
90
80
80
70
70
60
5
10
15
20
25
Clock Frequency (MHz)
Figure 18.
60
40
45
50
55
60
Clock Duty Cycle (%)
Figure 19.
10
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