ADS1259IPW datasheet(11/48 Pages) TI1

Part #	ADS1259IPW

Description	Industrial, 14kSPS, 24-Bit Analog-to-Digital Converter with Low-Drift Reference

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Manufacturer	TI1 [Texas Instruments]

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250

200

150

100

50

0

50

100

150

200

250

-

V

(V)

REF

5.0

0.5

1.0

1.5

2.0

2.5

VREFNInputCurrent

(VREFP=AVDD)

VREFPInputCurrent

(VREFN=AVSS)

3.0

3.5

4.0

4.5

0

25

50

75

100

125

150

175

200

225

250

-

Temperature( C)

°

125

-

55

-

35

-

15

5

25

45

65

85

105

VREFPInputCurrent

VREFNInputCurrent

0.010

0.008

0.006

0.004

0.002

0

0.002

0.004

0.006

0.008

0.010

-

Time(s)

6

0

1

2

3

4

C

=1 FX7R

m

REFIN

5

130

128

126

124

122

120

Temperature( C)

°

125

-

55

-

35

-

15

5

25

45

65

85

105

InternalOscillator

ExternalCrystal

−100

−90

−80

−70

−60

−50

−40

−30

−20

−10

0

100

200

300

400

500

600

700

800

900 1000

Hours

48 units

G001

7.50

7.45

7.40

7.35

7.30

7.25

7.20

Temperature( C)

°

125

-

55

-

35

-

15

5

25

45

65

85

105

ADS1259

www.ti.com

SBAS424D

– JUNE 2009 – REVISED AUGUST 2011

TYPICAL CHARACTERISTICS (continued)

At TA = +25°C, AVDD = +2.5V, AVSS = –2.5V, DVDD = 3.3V, VREF = 2.5V, VREFN = AVSS, fCLK = 7.3728MHz, and

fDATA = 60SPS, unless otherwise noted.

REFERENCE INPUT CURRENT vs TEMPERATURE

REFERENCE INPUT CURRENT vs REFERENCE VOLTAGE

Figure 26.

Figure 27.

DIFFERENTIAL INPUT IMPEDANCE vs TEMPERATURE

INTERNAL REFERENCE SETTLING TIME

Figure 28.

Figure 29.

INTERNAL OSCILLATOR vs TEMPERATURE

INTERNAL REFERENCE LONG-TERM STABILITY

Figure 30.

Figure 31.

Copyright

11

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