ADS7924_15 Datasheet, PDF (8/50 Pages) Texas Instruments – 4-Channel, MicroPOWER Analog-to-Digital Converter

ADS7924
SBAS482B – JANUARY 2010 – REVISED SEPTEMBER 2015
Typical Characteristics (continued)
At T_A = 25°C, unless otherwise noted.
3
AVDD = 2.2V
2
1
0
-1
-2
-3
-40
-11
18
47
76
105
Temperature (° C)
Figure 8. Offset Error Drift, Typical
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
2
3
4
5
6
AVDD Voltage (V)
Figure 10. Internal Oscillator Frequency vs Voltage
2.0
AVDD = 5.0V
1.5
1.0
0.5
0
-0.5
-1.0
-1.5
-2.0
0
512 1024 1536 2048 2560 3072 3584 4096
Code
Figure 12. Integral Nonlinearity
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5.0
30 Units Across Two Lots
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
2
3
4
AVDD Voltage (V)
Mean + s
Mean
Mean - s
5
6
Figure 9. Typical Offset Error vs AVDD Voltage
2.0
AVDD = 2.2V
1.5
1.0
0.5
0
-0.5
-1.0
-1.5
-2.0
0
512 1024 1536 2048 2560 3072 3584 4096
Code
Figure 11. Integral Nonlinearity
2.0
AVDD = 2.2V
1.5
1.0
Maximum INL
0.5
0
-0.5
Minimum INL
-1.0
-1.5
INL shown is worst result over transfer function.
-2.0
-40.0 -25.5 -11.0 3.5 18.0 32.5 47.0 61.5 76.0 90.5 105.0
Temperature (°C)
Figure 13. Integral Linearity Error Drift
8
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