ADS7924 datasheet(7/42 Pages) TI

Part #	ADS7924

Description	2.2V, 12-Bit, 4-Channel, microPOWER??ANALOG-TO-DIGITAL CONVERTER WITH I2C INTERFACE

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Manufacturer	TI [Texas Instruments]

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3

2

1

0

1

2

3

-

-40

105

Temperature( C)

°

-11

AVDD=2.2V

76

47

18

5.0

4.5

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

0

2

3

6

AVDDVoltage(V)

4

30UnitsAcrossTwoLots

5

Mean+ s

Mean

Mean - s

2.0

1.5

1.0

0.5

0

0.5

1.0

1.5

2.0

-

0

512

4096

Code

1024

3072

1536

AVDD=2.2V

2560

2048

3584

1.5

1.4

1.3

1.2

1.1

1.0

0.9

0.8

0.7

0.6

0.5

2

3

6

AVDDVoltage(V)

4

5

2.0

1.5

1.0

0.5

0

0.5

1.0

1.5

2.0

-

0

512

4096

Code

1024

3072

1536

AVDD=5.0V

2560

2048

3584

2.0

1.5

1.0

0.5

0

0.5

1.0

1.5

2.0

-

Temperature( C)

°

AVDD=2.2V

INLshownisworstresultovertransferfunction.

MaximumINL

MinimumINL

-40.0

105.0

-25.5 -11.0

3.5

18.0

32.5

47.0

61.5

76.0

90.5

ADS7924

www.ti.com

SBAS482A – JANUARY 2010 – REVISED MAY 2010

TYPICAL CHARACTERISTICS (continued)

At TA = +25°C, unless otherwise noted.

OFFSET ERROR DRIFT, TYPICAL

TYPICAL OFFSET ERROR vs AVDD VOLTAGE

Figure 8.

Figure 9.

INTERNAL OSCILLATOR FREQUENCY vs VOLTAGE

INTEGRAL NONLINEARITY

Figure 10.

Figure 11.

INTEGRAL NONLINEARITY

INTEGRAL LINEARITY ERROR DRIFT

Figure 12.

Figure 13.

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