AMC7891 datasheet(13/43 Pages) TI2

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−2.000

−1.500

−1.000

−0.500

0.000

0.500

1.000

1.500

2.000

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

External ADC Vref (V)

AVDD = 5 V

G019

−2.000

−1.500

−1.000

−0.500

0.000

0.500

1.000

1.500

2.000

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

External ADC Vref (V)

AVDD = 5 V

G020

2.495

2.496

2.497

2.498

2.499

2.500

2.501

2.502

2.503

2.504

2.505

2.5

3.0

3.5

4.0

4.5

5.0

5.5

AVDD (V)

G021

2.495

2.496

2.497

2.498

2.499

2.500

2.501

2.502

2.503

2.504

2.505

−40

−20

100

120

Temperature (°C)

15 units

G022

−2.5

−2.0

−1.5

−1.0

−0.5

0.0

0.5

1.0

1.5

2.0

2.5

−40

−20

100

120

Temperature (°C)

15 units

G000

AMC7891

www.ti.com

SBAS518A

– AUGUST 2011 – REVISED DECEMBER 2011

TYPICAL CHARACTERISTICS: ADC (continued)

AVDD = 5 V, GPIOVDD = 5 V, SPIVDD = 5 V, AGND = DGND = 0 V, External ADC reference = AVDD

(unless otherwise noted)

Figure 18. ADC OFFSET ERROR vs. REFERENCE

Figure 19. ADC GAIN ERROR vs. REFERENCE VOLTAGE

VOLTAGE

Figure 20. ADC INTERNAL REFERENCE vs. AVDD

Figure 21. ADC INTERNAL REFERENCE vs.

TEMPERATURE

Figure 22. TEMPERATURE SENSOR ERROR vs TEMPERATURE

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