ADS1271IPWRG4 datasheet(11/38 Pages) TI1

Part #	ADS1271IPWRG4

Description	24-Bit, Wide Bandwidth Analog-to-Dogotal Converter

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Manufacturer	TI1 [Texas Instruments]

Direct Link	http://www.ti.com

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ADS1271

SBAS306F − NOVEMBER 2004 − REVISED OCTOBER 2007

www.ti.com

11

TYPICAL CHARACTERISTICS (continued)

TA = 25°C, AVDD = 5V, DVDD = 1.8V, fCLK = 27MHz, VREFP = 2.5V, VREFN = 0V, unless otherwise noted.

Figure 19

ABSOLUTE OFFSET DRIFT HISTOGRAM

1357

9

11

13

15

17

19

21

Absolute Offset Drift (

µV/_C)

60

50

40

30

20

10

0

outliers: T <

−20_C

30 units, based on 20

_C intervals

over the range

−40_C to +105_C

Figure 20

GAIN DRIFT HISTOGRAM

Gain Drift (ppm/

_C)

15

10

5

0

30 units, based on 20

_C

intervals over the range

−40_Cto +105_C

Figure 21

OFFSET POWER−ON WARMUP

0

1020

30

4050

60

Time After Power−On (s)

40

30

20

10

0

−10

−20

−30

−40

High−Speed Mode

DVDD = 3.3V

Response

Band

Figure 22

GAIN ERROR POWER−ON WARMUP

0

10

20

3040

5060

Time After Power−On (s)

10

8

6

4

2

0

−2

−4

−6

−8

−10

High−Speed Mode

DVDD = 3.3V

Response

Band

Figure 23

UNCALIBRATED OFFSET HISTOGRAM

Uncalibrated Offset (

µV)

30

20

10

0

High−Speed Mode

30 Units

Figure 24

GAIN ERROR HISTOGRAM

Gain Error (ppm)

50

40

30

20

10

0

High−Speed Mode

30 Units

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