|
AMC1204_1108 Datasheet, PDF (9/30 Pages) Texas Instruments – 20MHz, Second-Order, Isolated Delta-Sigma Modulator for Current-Shunt Measurement | |||
|
◁ |
AMC1204
www.ti.com
SBAS512B â APRIL 2011 â REVISED AUGUST 2011
TYPICAL CHARACTERISTICS (continued)
At AVDD = 5V, DVDD = 3.3V, VINP = â250mV to +250mV, VINN = 0V, and sinc3 filter with OSR = 256, unless otherwise
noted.
GAIN ERROR vs ANALOG SUPPLY VOLTAGE
GAIN ERROR vs TEMPERATURE
2
2
1.5
1.5
1
1
0.5
0.5
0
0
â0.5
â0.5
â1
â1
â1.5
â1.5
â2
4.5
5
AVDD (V)
Figure 8.
â2
5.5
â40 â25 â10 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
â0.5
â1
â1.5
â2
5
10
15
20
25
Clock Frequency (MHz)
Figure 10.
GAIN ERROR vs CLOCK DUTY CYCLE
2
1.5
1
0.5
0
â0.5
â1
â1.5
â2
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.
Copyright © 2011, Texas Instruments Incorporated
9
|
▷ |