AMC7891_14 Datasheet, PDF (12/42 Pages) Texas Instruments – Analog Monitor and Control Circuit with 10-Bit, Multi-Channel ADC and Four DACs, Temperature Sensor, and 12 GPIOs

AMC7891
SBAS518A – AUGUST 2011 – REVISED DECEMBER 2011
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TYPICAL CHARACTERISTICS: ADC
AV_DD = 5 V, GPIOV_DD = 5 V, SPIV_DD = 5 V, AGND = DGND = 0 V, External ADC reference = AV_DD
(unless otherwise noted)
1.000
1.000
0.750
0.750
0.500
0.500
0.250
0.250
0.000
0.000
−0.250
−0.250
−0.500
−0.500
−0.750
−1.000
0
T=25ºC
128 256 384 512 640 768 896 1024
Code
G013
Figure 12. ADC INTEGRAL NON-LINEARITY
−0.750
−1.000
0
T=25ºC
128 256 384 512 640 768 896 1024
Code
G014
Figure 13. ADC DIFFERENTIAL NON-LINEARITY
1.000
0.750
0.500
INL Max
0.250
0.000
−0.250
−0.500
INL Min
−0.750
−1.000
−40 −20 0
20 40 60 80 100
Temperature (°C)
Figure 14. ADC INL vs. TEMPERATURE
120
G015
1.000
0.750
0.500
DNL Max
0.250
0.000
−0.250
−0.500
DNL Min
−0.750
−1.000
−40 −20 0
20 40 60 80 100
Temperature (°C)
Figure 15. ADC DNL vs. TEMPERATURE
120
G016
2.000
1.500
1.000
0.500
0.000
−0.500
−1.000
−1.500
−2.000
−40 −20 0
20 40 60 80 100 120
Temperature (°C)
G017
Figure 16. ADC OFFSET ERROR vs. TEMPERATURE
2.000
1.500
1.000
0.500
0.000
−0.500
−1.000
−1.500
−2.000
−40 −20 0
20 40 60 80 100 120
Temperature (°C)
G017
Figure 17. ADC GAIN ERROR vs. TEMPERATURE
12
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